System Security Command Reference for Cisco NCS 5500 Series, Cisco NCS 540 Series, and Cisco NCS 560 Series Routers

aaa accounting

To create a method list for accounting, use the aaa accounting command in the XR EXEC mode. To remove a list name from the system, use the no form of this command.

aaa accounting {commands | exec | mobile | network | subscriber | system } {default | list-name} {start-stop | stop-only} {none | method}

no aaa accounting {commands | exec | mobile | network} {default | list-name}

Syntax Description


commands	Enables accounting for XR EXEC shell commands.
exec	Enables accounting of a XR EXEC session.
mobile	Enables Mobile IP related accounting events.
network	Enables accounting for all network-related service requests, such as Internet Key Exchange (IKE) and Point-to-Point Protocol (PPP).
subscriber	Sets accounting lists for subscribers.
system	Enables accounting for all system-related events.
event manager	Sets the authorization list for XR EXEC.
default	Uses the listed accounting methods that follow this keyword as the default list of methods for accounting services.
`list-name`	Character string used to name the accounting method list.
start-stop	Sends a “start accounting” notice at the beginning of a process and a “stop accounting” notice at the end of a process. The requested user process begins regardless of whether the “start accounting” notice was received by the accounting server.
stop-only	Sends a “stop accounting” notice at the end of the requested user process. Note: This is not supported with system accounting.
none	Uses no accounting.
`method`	Method used to enable AAA system accounting. The value is one of the following options: group tacacs+—Uses the list of all TACACS+ servers for accounting. group radius—Uses the list of all RADIUS servers for accounting. group named-group—Uses a named subset of TACACS+ or RADIUS servers for accounting, as defined by the aaa group server tacacs+ or aaa group server radius command.

Command Default

AAA accounting is disabled.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the aaa accounting command to create default or named method lists defining specific accounting methods and that can be used on a per-line or per-interface basis. You can specify up to four methods in the method list. The list name can be applied to a line (console, aux, or vty template) to enable accounting on that particular line.

The Cisco IOS XR software supports both TACACS+ and RADIUS methods for accounting. The router reports user activity to the security server in the form of accounting records, which are stored on the security server.

Method lists for accounting define the way accounting is performed, enabling you to designate a particular security protocol that is used on specific lines or interfaces for particular types of accounting services.

For minimal accounting, include the stop-only keyword to send a “stop accounting” notice after the requested user process. For more accounting, you can include the start-stop keyword, so that TACACS+ or RADIUS sends a “start accounting” notice at the beginning of the requested process and a “stop accounting” notice after the process. The accounting record is stored only on the TACACS+ or RADIUS server.

The requested user process begins regardless of whether the “start accounting” notice was received by the accounting server.

Note

This command cannot be used with TACACS or extended TACACS.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to define a default commands accounting method list, where accounting services are provided by a TACACS+ security server, with a stop-only restriction:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa accounting commands default stop-only group tacacs+

aaa accounting system default

To enable authentication, authorization, and accounting (AAA) system accounting, use the aaa accounting system default command in the XR Config mode. To disable system accounting, use the no form of this command.

aaa accounting system default {start-stop | stop-only} {none | method}

no aaa accounting system default

Syntax Description


start-stop	Sends a “start accounting” notice during system bootup and a “stop accounting” notice during system shutdown or reload.
stop-only	Sends a “stop accounting” notice during system shutdown or reload.
none	Uses no accounting.
`method`	Method used to enable AAA system accounting. The value is one of the following options: group tacacs+—Uses the list of all TACACS+ servers for accounting. group radius—Uses the list of all RADIUS servers for accounting. group named-group—Uses a named subset of TACACS+ or RADIUS servers for accounting, as defined by the aaa group server tacacs+ or aaa group server radius command.

Command Default

AAA accounting is disabled.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

System accounting does not use named accounting lists; you can define only the default list for system accounting.

The default method list is automatically applied to all interfaces or lines. If no default method list is defined, then no accounting takes place.

You can specify up to four methods in the method list.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to cause a “start accounting” record to be sent to a TACACS+ server when a router initially boots. A “stop accounting” record is also sent when a router is shut down or reloaded.


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa accounting system default start-stop group tacacs+

aaa accounting update

To enable periodic interim accounting records to be sent to the accounting server, use the aaa accounting update command in the XR Config mode. To disable the interim accounting updates, use the no form of this command.

aaa accounting update {periodic minutes}

no aaa accounting update

Syntax Description


periodic `minutes`	(Optional) Sends an interim accounting record to the accounting server periodically, as defined by the `minutes` argument, which is an integer that specifies the number of minutes. The range is from 1 to 35791394 minutes.

Command Default

AAA accounting update is disabled.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

When used with the periodic keyword, interim accounting records are sent periodically as defined by the minutes argument. The interim accounting record contains all the accounting information recorded for that user up to the time the accounting record is sent.

Caution

Using the aaa accounting update command with the periodic keyword can cause heavy congestion when many users are logged into the network.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to send periodic interim accounting records to the RADIUS server at 30-minute intervals:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa accounting update periodic 30

aaa authentication (XR-VM)

To create a method list for authentication, use the aaa authentication command in the XR Config mode or Admin Configuration modeSystem Admin Config mode. To disable this authentication method, use the no form of this command.

aaa authentication {login | ppp} {default | list-name} method-list

no aaa authentication {login | ppp} {default | list-name} method-list

Syntax Description


login	Sets authentication for login.
ppp	Sets authentication for Point-to-Point Protocol.
default	Uses the listed authentication methods that follow this keyword as the default list of methods for authentication.
subscriber	Sets the authentication list for the subscriber.
`list-name`	Character string used to name the authentication method list.
`method-list`	Method used to enable AAA system accounting. The value is one of the following options: group tacacs+—Specifies a method list that uses the list of all configured TACACS+ servers for authentication. group radius—Specifies a method list that uses the list of all configured RADIUS servers for authentication. group `named-group` —Specifies a method list that uses a named subset of TACACS+ or RADIUS servers for authentication, as defined by the aaa group server tacacs+ or aaa group server radius command. local—Specifies a method list that uses the local username database method for authentication. AAA method rollover happens beyond the local method if username is not defined in the local group. line—Specifies a method list that uses the line password for authentication.

Command Default

Default behavior applies the local authentication on all ports.

Command Modes

XR Config mode or Admin Configuration modeSystem Admin Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the aaa authentication command to create a series of authentication methods, or method list. You can specify up to four methods in the method list. A method list is a named list describing the authentication methods (such as TACACS+ or RADIUS) in sequence. The subsequent methods of authentication are used only if the initial method is not available, not if it fails.

The default method list is applied for all interfaces for authentication, except when a different named method list is explicitly specified—in which case the explicitly specified method list overrides the default list.

For console and vty access, if no authentication is configured, a default of local method is applied.

Note

The group tacacs+, group radius, and group group-name forms of this command refer to a set of previously defined TACACS+ or RADIUS servers.
Use the tacacs-server host or radius-server host command to configure the host servers.
Use the aaa group server tacacs+ or aaa group server radius command to create a named subset of servers.
The login keyword, local option, and group option are available only in Admin Configuration modeSystem Admin Config mode.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to specify the default method list for authentication, and also enable authentication for console in XR Config mode:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa authentication login default group tacacs+

aaa authorization (XR-VM)

To create a method list for authorization, use the aaa authorization command in the XR Config mode. To disable authorization for a function, use the no form of this command.

aaa authorization { commands | eventmanager | exec | network | subscriber | nacm } { default | list-name } { none | local | prefer-external | only-external | group { tacacs | + | radius | group-name } }

no aaa authorization { commands | eventmanager | exec | network | subscriber | nacm } { default | list-name }

Syntax Description


commands	Configures authorization for all XR EXEC mode shell commands.
eventmanager	Applies an authorization method for authorizing an event manager (fault manager).
exec	Configures authorization for an interactive (XR EXEC mode) session.
network	Configures authorization for network services, such as PPP or Internet Key Exchange (IKE).
subscriber	Sets the authorization lists for the subscriber.
default	Uses the listed authorization methods that follow this keyword as the default list of methods for authorization.
`list-name`	Character string used to name the list of authorization methods.
none	Uses no authorization. If you specify none , no subsequent authorization methods is attempted. However, the task ID authorization is always required and cannot be disabled.
local	Uses local authorization. While this method of authorization is already supported, it is available for command authorization only from Cisco IOS XR Software Release 7.5.1 and later.
prefer-external	Adds the external group names to the list of local group names to determine the access control rules.
only-external	Uses the external group names to determine the access control rules.
group tacacs+	Uses the list of all configured TACACS+ servers for authorization.
group radius	Uses the list of all configured RADIUS servers for authorization. This method of authorization is not available for command authorization.
group `group-name`	Uses a named subset of TACACS+ or RADIUS servers for authorization as defined by the aaa group server tacacs+ or aaa group server radius command.

Command Default

Authorization is disabled for all actions (equivalent to the method none keyword).

Command Modes

XR Config mode

Command History


Release	Modification
Release 7.5.1	The command was modified to make the local option available for command authorization as well.
Release 7.4.1	NACM prefer-external and only-external keywords are introduced.
Release 6.0	This command was introduced.

Usage Guidelines

Use the aaa authorization command to create method lists defining specific authorization methods that can be used on a per-line or per-interface basis. You can specify up to four methods in the method list.

Note

The command authorization mentioned here applies to the one performed by an external AAA server and not for task-based authorization.

Method lists for authorization define the ways authorization will be performed and the sequence in which these methods will be performed. A method list is a named list describing the authorization methods (such as TACACS+), in sequence. Method lists enable you to designate one or more security protocols for authorization, thus ensuring a backup system in case the initial method fails. Cisco IOS XR software uses the first method listed to authorize users for specific network services; if that method fails to respond, Cisco IOS XR software selects the next method listed in the method list. This process continues until there is successful communication with a listed authorization method or until all methods defined have been exhausted.

Note

Cisco IOS XR software attempts authorization with the next listed method only when there is no response (not a failure) from the previous method. If authorization fails at any point in this cycle—meaning that the security server or local username database responds by denying the user services—the authorization process stops and no other authorization methods are attempted.

The Cisco IOS XR software supports the following methods for authorization:

none—The router does not request authorization information; authorization is not performed over this line or interface.
local—Use the local database for authorization.
group tacacs+—Use the list of all configured TACACS+ servers for authorization.
group radius—Use the list of all configured RADIUS servers for authorization.
group group-name—Uses a named subset of TACACS+ or RADIUS servers for authorization.

Method lists are specific to the type of authorization being requested. Cisco IOS XR software supports four types of AAA authorization:

Commands authorization—Applies to the XR EXEC mode commands a user issues. Command authorization attempts authorization for all XR EXEC mode commands.

Note

“Command” authorization is distinct from “task-based” authorization, which is based on the task profile established during authentication.

XR EXEC mode authorization—Applies authorization for starting an XR EXEC mode session.

Note

The exec keyword is no longer used to authorize the fault manager service. The eventmanager keyword (fault manager) is used to authorize the fault manager service. The exec keyword is used for EXEC authorization.

Network authorization—Applies authorization for network services, such as IKE.

Event manager authorization—Applies an authorization method for authorizing an event manager (fault manager). You are allowed to use TACACS+ or locald.

Note

The eventmanager keyword (fault manager) replaces the exec keyword to authorize event managers (fault managers).

When you create a named method list, you are defining a particular list of authorization methods for the indicated authorization type. When defined, method lists must be applied to specific lines or interfaces before any of the defined methods are performed.

To know more about command authorization using local user account feature which was introduced in Cisco IOS XR Software Release 7.5.1, see the Configuring AAA Services chapter in the System Security Configuration Guide for Cisco NCS 5500 Series Routers.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to define the network authorization method list named listname1, which specifies that TACACS+ authorization is used:


Router# configure
Router(config)# aaa authorization commands listname1 group tacacs+

The following examples show how to configure command authorization using local user account:

Router#configure
Router(config)#aaa authorization commands default group tacacs+ local
Router(config)#commit

or

Router(config)#aaa authorization commands default local

Router(config)#commit

aaa authorization (System Admin-VM)

To create command rules and data rules on System Admin VM for user authorization, use the aaa authorization command in Admin Configuration modeSystem Admin Config mode. To delete the command rules and data rules, use the no form of this command.

aaa authorization { cmdrules cmdrule { integer | range integer } [ action action-type | command cmd-name | context context-name | group group-name | ops ops-type ] | commands group { none | tacacs } | datarules datarule { integer | range integer } [ action action-type | context context-name | group group-name | keypath keypath-name | namespace namespace-string | ops ops-type ] }

Syntax Description


cmdrules	Configures command rules.
cmdrule `integer`	Specifies the command rule number.
range `integer`	Specifies the range of the command rules or data rules to be configured.
action	Specifies whether users are permitted or not allowed to perform the operation specified for the ops keyword.
`action-type`	Specifies the action type for the command rule or data rule. Available options are: accept , accept_log and reject .
command `cmd-name`	Specifies the command to which the command rule applies. The command must be entered within double-quotes. Example, get .
context `context-name`	Specifies to which type of connection the command rule or data rule applies. The connection type can be netconf, cli, or xml.
group `group-name`	Specifies the group to which the command rule or data rule applies. Example, admin-r .
ops `ops-type`	Specifies whether the user has read, execute, or read and execute permissions for the command. Available options for command rules are: r , rx , and x . To know the available options for data rules, use a ? after the ops keyword.
commands group	Sets the command authorization lists for server groups. Available options are none that specifies no authorization and tacacs that specifies use of the list of all tacacs+ hosts.
datarules	Configures data rules.
datarule `integer`	Specifies the data rule number.
keypath	Specifies the keypath of the data element. If you enter an asterisk '*' for keypath, it indicates that the command rule is applicable to all configuration data.
namespace	Enter asterisk "*" to indicate that the data rule is applicable for all namespace values.

Command Default

None

Command Modes

Admin Configuration modeSystem Admin Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

From Cisco IOS XR Software Release 7.4.1 and later, the system internally maps the users configured on the XR VM to System Admin VM of the router, based on the task table of the user on the XR VM. With this feature, NETCONF and gRPC users can access the admin-related information on the router even if their user profiles do not exist on System Admin VM. For a sample configuration, see the example section.

For more details, see the Configuring AAA Services chapter in the System Security Configuration Guide for Cisco NCS 5500 Series Routers.

Examples

This example shows how to create a command rule:

sysadmin-vm:0_RP0#config
sysadmin-vm:0_RP0(config)#aaa authorization cmdrules cmdrule 10 action accept command "show platform" context cli group group1 ops rx

This example shows how to create a data rule:

sysadmin-vm:0_RP0#config
sysadmin-vm:0_RP0(config)#aaa authorization datarules datarule 20 action accept context cli group group10 keypath * namespace * ops rwx

This example shows how to configure a command rule for a NETCONF or gRPC session to allow read access for admin-r group users:


sysadmin-vm:0_RP0(config)#aaa authorization cmdrules cmdrule 6 context netconf command get group admin-r ops rx action accept

aaa default-taskgroup

To specify a task group for both remote TACACS+ authentication and RADIUS authentication, use the aaa default-taskgroup command in the XR Config mode. To remove this default task group, enter the no form of this command.

aaa default-taskgroup taskgroup-name

no aaa default-taskgroup

Syntax Description


`taskgroup-name`	Name of an existing task group.

Command Default

No default task group is assigned for remote authentication.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the aaa default-taskgroup command to specify an existing task group for remote TACACS+ authentication.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to specify taskgroup1 as the default task group for remote TACACS+ authentication:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa default-taskgroup taskgroup1

aaa enable-cert-authentication

To enable certificate-based authentication for users in the TACACS+ Server or Server Groups, use the aaa enable-cert-authentication command in the XR-Config mode.

aaa enable-cert-authentication

Syntax Description

This command has no keywords or arguments.

Command Default

Certificate-based user authentication using TACACS+ server is disabled.

Command Modes

XR-Config mode.

Command History


Release	Modification
Release 7.5.4	This command was introduced.

Usage Guidelines

Enable AAA authorization using aaa authorization exec command.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to configure certificate-based authentication for users configured in the TACACS+ Server or Server Groups:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa enable-cert-authentication
RP/0/RP0/CPU0:router(config)# aaa authorization exec default group tacacs+ local
RP/0/RP0/CPU0:router(config)# commit

aaa group server radius

To group different RADIUS server hosts into distinct lists, use the aaa group server radius command in the XR Config mode. To remove a group server from the configuration list, enter the no form of this command.

aaa group server radius group-name

no aaa group server radius group-name

Syntax Description


`group-name`	Character string used to name the group of servers.

Command Default

This command is not enabled.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the aaa group server radius command to group existing server hosts, which allows you to select a subset of the configured server hosts and use them for a particular service. A server group is used in conjunction with a global server-host list. The server group lists the IP addresses or hostnames of the selected server hosts.

Server groups can also include multiple host entries for the same server, as long as each entry has a unique identifier. The combination of an IP address and User Datagram Protocol (UDP) port number creates a unique identifier, allowing different ports to be individually defined as RADIUS hosts providing a specific authentication, authorization, and accounting (AAA) service. In other words, this unique identifier enables RADIUS requests to be sent to different UDP ports on a server at the same IP address. If two different host entries on the same RADIUS server are configured for the same service, for example, accounting, the second host entry acts as an automatic switchover backup to the first host entry. Using this example, if the first host entry fails to provide accounting services, the network access server tries the second host entry on the same device for accounting services. The RADIUS host entries are tried in the order in which they are configured in the server group.

All members of a server group must be the same type, that is, RADIUS.

The server group cannot be named radius or tacacs.

This command enters server group configuration mode. You can use the server command to associate a particular RADIUS server with the defined server group.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows the configuration of an AAA group server named radgroup1, which comprises three member servers:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa group server radius radgroup1
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.0.0.5 auth-port 1700 acct-port 1701
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.0.0.10 auth-port 1702 acct-port 1703
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.0.0.20 auth-port 1705 acct-port 1706

Note

If the auth-port port-number and acct-port port-number keywords and arguments are not specified, the default value of the port-number argument for the auth-port keyword is 1645 and the default value of the port-number argument for the acct-port keyword is 1646.

aaa group server tacacs+

To group different TACACS+ server hosts into distinct lists, use the aaa group server tacacs+ command in the XR Config mode. To remove a server group from the configuration list, enter the no form of this command.

aaa group server tacacs+ group-name

no aaa group server tacacs+ group-name

Syntax Description


`group-name`	Character string used to name a group of servers.

Command Default

This command is not enabled.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The AAA server-group feature introduces a way to group existing server hosts. The feature enables you to select a subset of the configured server hosts and use them for a particular service.

The aaa group server tacacs+ command enters server group configuration mode. The server command associates a particular TACACS+ server with the defined server group.

A server group is a list of server hosts of a particular type. The supported server host type is TACACS+ server hosts. A server group is used with a global server host list. The server group lists the IP addresses or hostnames of the selected server hosts.

The server group cannot be named radius or tacacs.

Note

Group name methods refer to a set of previously defined TACACS+ servers. Use the tacacs-server host command to configure the host servers.

From Cisco IOS XR Software Release 7.4.1 and later, you can configure a hold-down timer for TACACS+ server. For details, see the holddown-time command.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows the configuration of an AAA group server named tacgroup1, which comprises three member servers:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa group server tacacs+ tacgroup1
RP/0/RP0/CPU0:router(config-sg-tacacs)# server 192.168.200.226
RP/0/RP0/CPU0:router(config-sg-tacacs)# server 192.168.200.227
RP/0/RP0/CPU0:router(config-sg-tacacs)# server 192.168.200.228

aaa password-policy

To define a AAA password security policy, use the aaa password-policy command in XR Config mode. To remove the AAA password security policy, use the no form of this command.

aaa password-policy policy-name { authen-max-attempts authen-max-attempts | lifetime { years | months | days | hours | minutes | seconds } lifetime | lockout-time { days | hours | minutes | seconds } lockout-time | lower-case lower-case | max-length max-length | min-char-change min-char-change | min-length min-length | numeric numeric | restrict-consecutive-characters { english-alphabet | qwerty-keyboard } num-of-chars [cyclic-wrap] | special-char special-char | upper-case upper-case }

Syntax Description


`policy-name`	Specifies the name of the password, in characters.
authen-max-attempts	Specifies, in integer, the maximum number of authentication failure attempts allowed for a user, in order to restrict users who authenticate with invalid login credentials.
lifetime	Specifies the maximum lifetime for the password, the value of which is specified in integer, as years, months, days, hours, minutes or seconds.
lockout-time	Specifies, in integer, the duration (in days, hours, minutes or seconds) for which the user is locked out when he exceeds the maximum limit of authentication failure attempts allowed.
lower-case	Specifies the number of lower case alphabets allowed in the password policy, in integer.
max-length	Specifies the maximum length of the password, in integer.
min-char-change	Specifies the number of character change required between subsequent passwords, in integer.
min-length	Specifies the maximum length of the password, in integer.
numeric	Specifies the number of numerals allowed in the password policy, in integer.
restrict-consecutive-characters	Restricts consecutive characters (that includes regular English alphabets, and English alphabets from QWERTY keyboard layout and numbers), for user passwords and secrets.
special-char	Specifies the number of special characters allowed in the password policy, in integer.
upper-case	Specifies the number of upper case alphabets allowed in the password policy, in integer.

Command Default

None

Command Modes

XR Config mode

Command History


Release	Modification
Release 7.7.1	This command was modified to introduce the restrict-consecutive-characters option.
Release 7.2.1	The command options (except a few mentioned in the usage guidelines section) were extended to user secret as well.
Release 6.2.1	This command was introduced.

Usage Guidelines

AAA password security policy works as such for Cisco IOS XR platforms. Whereas, this feature is supported only on XR VM, for Cisco IOS XR 64 bit platforms and Cisco NCS 5500 Series Routers.

For more details on the usage of each option of this command, refer the section on AAA Password Security for FIPS Compliance in Configuring AAA Services chapter in the System Security Configuration Guide for Cisco NCS 5500 Series Routers.

You must configure both authen-max-attempts and lockout-time in order for the lock out functionality to take effect.

The min-char-change option is effective only for password change through logon, and not for password change by configuration.

Use username command along with password-policy option, in the XR Config mode, to associate the password policy with a particular user.

From Cisco IOS XR Software Release 7.2.1 and later, most of the options of the aaa password-policy command listed in the syntax above are applicable to user password as well as secret. Whereas, the options listed below are supported only for password, and not for secret:

max-char-repetition
min-char-change
restrict-password-reverse
restrict-password-advanced

Among the NCS540 router variants, the restrict-consecutive-characters option is applicable only for the following variants:

N540-28Z4C-SYS-A/D
N540X-16Z4G8Q2C-A/D
N540-12Z20G-SYS-A/D
N540X-12Z16G-SYS-A/D

This table lists the default, maximum and minimum values of various command variables:


Command Variables	Default Value	Maximum Value	Minimum Value
`policy-name`	None	253	1
`max-length`	253	253	2
`min-length`	2	253	2
`special-char`	0	253	0
`upper-case`	0	253	0
`lower-case`	0	253	0
`numeric`	0	253	0
For lifetime : years months days hours minutes seconds	0 0 0 0 0 0	99 11 30 23 59 59	1 1 1 1 1 1
`min-char-change`	4	253	0
`authen-max-attempts`	0	24	1
For lockout-time : days hours minutes seconds	0 0 0 0	255 23 59 59	1 1 1 1

Task ID


Task ID	Operation
aaa	read, write

Examples

This example shows how to define a AAA password security policy:


RP/0/RP0/CPU0:router(config)#aaa password-policy test-policy
RP/0/RP0/CPU0:router(config-aaa)#min-length 8
RP/0/RP0/CPU0:router(config-aaa)#max-length 15
RP/0/RP0/CPU0:router(config-aaa)#lifetime months 3
RP/0/RP0/CPU0:router(config-aaa)#min-char-change 5
RP/0/RP0/CPU0:router(config-aaa)#authen-max-attempts 3
RP/0/RP0/CPU0:router(config-aaa)#lockout-time days 1

Related Commands

Command	Description
restrict-consecutive-characters	Restricts consecutive characters, including English alphabets and numbers, for user passwords and secrets.
show aaa password-policy	Displays the details of AAA password policy.
username

accounting (line)

To enable authentication, authorization, and accounting (AAA) accounting services for a specific line or group of lines, use the accounting command. To disable AAA accounting services, use the no form of this command.

accounting {commands | exec} {default | list-name}

no accounting {commands | exec}

Syntax Description


commands	Enables accounting on the selected lines for all XR EXEC mode shell commands.
exec	Enables accounting of XR EXEC mode session.
default	The name of the default method list, created with the aaa accounting command.
`list-name`	Specifies the name of a list of accounting methods to use. The list is created with the aaa accounting command.

Command Default

Accounting is disabled.

Command Modes

Line template configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

After you enable the aaa accounting command and define a named accounting method list (or use the default method list) for a particular type of accounting, you must apply the defined lists to the appropriate lines for accounting services to take place. Use the accounting command to apply the specified method lists to the selected line or group of lines. If a method list is not specified this way, no accounting is applied to the selected line or group of lines.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to enable command accounting services using the accounting method list named listname2 on a line template named configure:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template configure
RP/0/RP0/CPU0:router(config-line)# accounting commands listname2

authorization (line)

To enable authentication, authorization, and accounting (AAA) authorization for a specific line or group of lines, use the authorization command in line template configuration mode. To disable authorization, use the no form of this command.

authorization {commands | exec | eventmanager} {default | list-name}

no authorization {commands | exec | eventmanager}

Syntax Description


commands	Enables authorization on the selected lines for all commands.
exec	Enables authorization for an interactive XR EXEC mode session.
default	Applies the default method list, created with the aaa authorization command.
eventmanager	Sets eventmanager authorization method. This method is used for the embedded event manager.
`list-name`	Specifies the name of a list of authorization methods to use. If no list name is specified, the system uses the default. The list is created with the aaa authorization command.

Command Default

Authorization is not enabled.

Command Modes

Line template configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

After you use the aaa authorization command to define a named authorization method list (or use the default method list) for a particular type of authorization, you must apply the defined lists to the appropriate lines for authorization to take place. Use the authorization command to apply the specified method lists (or, if none is specified, the default method list) to the selected line or group of lines.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to enable command authorization using the method list named listname4 on a line template named configure:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template configure
RP/0/RP0/CPU0:router(config-line)# authorization commands listname4

deadtime (server-group configuration)

To configure the deadtime value at the RADIUS server group level, use the deadtime command in server-group configuration mode. To set deadtime to 0, use the no form of this command.

deadtime minutes

no deadtime

Syntax Description


`minutes`	Length of time, in minutes, for which a RADIUS server is skipped over by transaction requests, up to a maximum of 1440 (24 hours). The range is from 1 to 1440.

Command Default

Deadtime is set to 0.

Command Modes

Server-group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The value of the deadtime set in the server groups overrides the deadtime that is configured globally. If the deadtime is omitted from the server group configuration, the value is inherited from the primary list. If the server group is not configured, the default value of 0 applies to all servers in the group. If the deadtime is set to 0, no servers are marked dead.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example specifies a one-minute deadtime for RADIUS server group group1 when it has failed to respond to authentication requests for the deadtime command:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# aaa group server radius group1
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.1.1.1 auth-port 1645 acct-port 1646
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.2.2.2 auth-port 2000 acct-port 2001
RP/0/RP0/CPU0:router(config-sg-radius)# deadtime 1

description (AAA)

To create a description of a task group or user group during configuration, use the description command in task group configuration or user group configuration mode. To delete a task group description or user group description, use the no form of this command.

description string

no description

Syntax Description


`string`	Character string describing the task group or user group.

Command Default

None

Command Modes

Task group configuration

User group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the description command inside the task or user group configuration submode to define a description for the task or user group, respectively.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows the creation of a task group description:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# taskgroup alpha
RP/0/RP0/CPU0:router(config-tg)# description this is a sample taskgroup

The following example shows the creation of a user group description:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# usergroup alpha
RP/0/RP0/CPU0:router(config-ug)# description this is a sample user group

group (AAA)

To add a user to a group, use the group command in username configuration mode. To remove the user from a group, use the no form of this command.

group {cisco-support | maintenance | netadmin | operator | provisioning | retrieve | root-lr | serviceadmin | sysadmin | group-name}

no group {cisco-support | maintenance | netadmin | operator | provisioning | retrieve | root-lr | serviceadmin | sysadmin | group-name}

Syntax Description

cisco-support

Adds the user to the predefined Cisco support personnel group.

Note

Starting from IOS XR 6.0 release, the cisco-support group is combined with the root-system group. This means a user who is part of the root-system group can also access commands that are included in the cisco-support group.

maintenance

Adds the user to the predefined maintenance group.

netadmin

Adds the user to the predefined network administrators group.

operator

Adds the user to the predefined operator group.

provisioning

Adds the user to the predefined provisioning group.

retrieve

Adds the user to the predefined retrieve group.

root-lr

Adds the user to the predefined root-lr group. Only users with root-lr authority may use this option.

serviceadmin

Adds the user to the predefined service administrators group.

sysadmin

Adds the user to the predefined system administrators group.

group-name

Adds the user to a named user group that has already been defined with the usergroup command.

Command Default

None

Command Modes

Username configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the group command in username configuration mode. To access username configuration mode, use the username command in XR Config mode.

If the group command is used in Admin Configuration modeSystem Admin Config mode, only cisco-support keywords can be specified.

The privileges associated with the cisco-support group are now included in the root-system group. The cisco-support group is no longer required to be used for configuration.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to assign the user group operator to the user named user1:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# username user1
RP/0/RP0/CPU0:router(config-un)# group operator

holddown-time (TACACS+)

To specify a duration for which an unresponsive TACACS+ server is to be marked as down, and not be used for sending further client requests for that duration, use the holddown-time command in various configuration modes. To disable this feature, use the no form of this command or configure the hold down timer value as zero.

holddown-time time

Syntax Description


`time`	Specifies the hold-down timer value, in seconds. The range is from 0 to 1200. Zero indicates that the hold-down timer feature is disabled.

Command Default

By default, the TACACS+ hold-down timer is disabled.

Command Modes

TACACS server

TACACS+ server group

TACACS+ private server

Command History


Release	Modification
Release 7.4.1	This command was introduced.

Usage Guidelines

Note

To set the hold-down timer at global level, use the tacacs-server holddown-time command in XR Config mode.

While selecting the timer at various configuration levels, the system gives preference to the one which is more specific to the server. That is, the server-level timer has the highest precedence, followed by server group-level and finally, the global-level.

Also, see the Guidelines for Configuring Hold-Down Timer for TACACS+ section in the Configuring AAA Services chapter in the System Security Configuration Guide for Cisco NCS 5500 Series Routers.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to mark an unresponsive TACACS+ server as being down, and not to use it for sending further client requests for a duration of 35 seconds:


Router(config)#tacacs-server host 10.105.236.102 port 2020
Router(config-tacacs-host)#holddown-time 35

This example shows how to set a hold-down timer at global level:


Router#configure
Router(config)#tacacs-server holddown-time 30

This example shows how to set a hold-down timer at server-group level:


Router#configure
Router(config)#aaa group server tacacs+ test-group
Router(config-sg-tacacs)#holddown-time 40

This example shows how to set a hold-down timer at private server level:


Router(config)#aaa group server tacacs+ test-group
Router(config-sg-tacacs)#server-private 10.105.236.109 port 2020
Router(config-sg-tacacs-private)#holddown-time 55
Router(config-sg-tacacs-private)#commit

Related Commands

Command	Description
aaa group server tacacs+	Groups different TACACS+ server hosts into distinct lists.
server-private (TACACS+)	Configures the IP address of the private TACACS+ server for the group server.
tacacs-server host	Configures a TACACS+ host server.

inherit taskgroup

To enable a task group to derive permissions from another task group, use the inherit taskgroup command in task group configuration mode.

inherit taskgroup {taskgroup-name | netadmin | operator | sysadmin | cisco-support | root-lr | serviceadmin}

Syntax Description


`taskgroup-name`	Name of the task group from which permissions are inherited.
netadmin	Inherits permissions from the network administrator task group.
operator	Inherits permissions from the operator task group.
sysadmin	Inherits permissions from the system administrator task group.
cisco-support	Inherits permissions from the cisco support task group.
root-lr	Inherits permissions from the root-lr task group.
serviceadmin	Inherits permissions from the service administrators task group.

Command Default

None

Command Modes

Task group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the inherit taskgroup command to inherit the permissions (task IDs) from one task group into another task group. Any changes made to the taskgroup from which they are inherited are reflected immediately in the group from which they are inherited.

Task ID


Task ID	Operations
aaa	read, write

Examples

In the following example, the permissions of task group tg2 are inherited by task group tg1:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# taskgroup tg1
RP/0/RP0/CPU0:router(config-tg)# inherit taskgroup tg2
RP/0/RP0/CPU0:router(config-tg)# end

inherit usergroup

To enable a user group to derive characteristics of another user group, use the inherit usergroup command in user group configuration mode.

inherit usergroup usergroup-name

Syntax Description


`usergroup-name`	Name of the user group from which permissions are to be inherited.

Command Default

None

Command Modes

User group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Each user group is associated with a set of task groups applicable to the users in that group. A task group is defined by a collection of task IDs. Task groups contain task ID lists for each class of action. The task permissions for a user are derived (at the start of the EXEC or XML session) from the task groups associated with the user groups to which that user belongs.

User groups support inheritance from other user groups. Use the inherit usergroup command to copy permissions (task ID attributes) from one user group to another user group. The “destination” user group inherits the properties of the inherited group and forms a union of all task IDs specified in those groups. For example, when user group A inherits user group B, the task map of the user group A is a union of that of A and B. Cyclic inclusions are detected and rejected. User groups cannot inherit properties from predefined groups, such as root-system users, root-sdr users, netadmin users, and so on. Any changes made to the usergroup from which it is inherited are reflected immediately in the group from which it is inherited.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to enable the purchasing user group to inherit properties from the sales user group:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# usergroup purchasing
RP/0/RP0/CPU0:router(config-ug)# inherit usergroup sales

key (TACACS+)

To specify an authentication and encryption key shared between the AAA server and the TACACS+ server, use the key (TACACS+) command in TACACS host configuration mode. To disable this feature, use the no form of this command.

key { 0 clear-text-key | 6 encrypted-type6-key | 7 encrypted-key | Encrypt6 encrypted-key | clear-text-key | clear clear-text-key | encrypted encrypted-key }

Syntax Description

0 clear-text-key

Specifies an unencrypted (cleartext) shared key.

6 encrypted-type6-key

Specifies an type 6 encrypted shared key.

7 encrypted-key

Specifies an encrypted shared key.

Encrypt6 encrypted-key

Specifies an unencrypted (cleartext) shared key to be encrypted in type6.

clear-text-key

Specifies an unencrypted (cleartext) user password.

clear clear-text-key

Specifies an unencrypted (cleartext) shared key.

Note

This option is decrypted from release 7.4.1. Use keyword 0

encrypted encrypted-key

Specifies an encrypted shared key.

Note

This option is decrypted from release 7.4.1. Use keyword 7

Command Default

None

Command Modes

TACACS host configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The TACACS+ packets are encrypted using the key, and it must match the key used by the TACACS+ daemon. Specifying this key overrides the key set by the tacacs-server key command for this server only.

The key is used to encrypt the packets that are going from TACACS+, and it should match with the key configured on the external TACACS+ server so that the packets are decrypted properly. If a mismatch occurs, the result fails.

The minimum character length of the key is 1 and maximum character length of the key is 48.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to set the encrypted key to anykey


RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226
RP/0/RP0/CPU0:router(config-tacacs-host)# key anykey

login authentication

To enable authentication, authorization, and accounting (AAA) authentication for logins, use the login authentication command in line template configuration mode. To return to the default authentication settings, use the no form of this command.

login authentication {default | list-name}

no login authentication

Syntax Description


default	Default list of AAA authentication methods, as set by the aaa authentication login command.
`list-name`	Name of the method list used for authenticating. You specify this list with the aaa authentication login command.

Command Default

This command uses the default set with the aaa authentication login command.

Command Modes

Line template configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The login authentication command is a per-line command used with AAA that specifies the name of a list of AAA authentication methods to try at login.

Caution

If you use a list-name value that was not configured with the aaa authentication login command, the configuration is rejected.

Entering the no form of the login authentication command has the same effect as entering the command with the default keyword.

Before issuing this command, create a list of authentication processes by using the aaa authentication login command.

Task ID


Task ID	Operations
aaa	read, write
tty-access	read, write

Examples

The following example shows that the default AAA authentication is used for the line template template1:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template template1
RP/0/RP0/CPU0:router(config-line)# login authentication default

The following example shows that the AAA authentication list called list1 is used for the line template template2:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# line template template2
RP/0/RP0/CPU0:router(config-line)# login authentication list1

nacm enable-external-policies

To enable dynamic NETCONF Access Control Model (NACM) policy authorization on a router, use the nacm enable-external-policies command in the XR Config mode. To remove the configuration, use the no form of this command.

nacm enable-external-policies

Syntax Description

This command has no keywords or arguments.

Command Default

Disabled, by default.

Command Modes

XR Config mode

Command History


Release	Modification
Release 7.8.1	This command was introduced.

Usage Guidelines

If this configuration is not present, update the NACM policies manually on each router.

Task ID


Task ID	Operation
nacm	read, write

Examples

This example shows how to enable the dynamic NACM on a router.


Router#configure
Router(config)# nacm enable-external-policies
Router(config)# commit

password (AAA)

To create a login password for a user, use the password command in username configuration mode or line template configuration mode. To remove the password, use the no form of this command.

password { [0] | 7 password}

no password {0 | 7 password}

Syntax Description


0	(Optional) Specifies that an unencrypted clear-text password follows.
7	Specifies that an encrypted password follows.
`password`	Specifies the unencrypted password text to be entered by the user to log in, for example, “lab”. If encryption is configured, the password is not visible to the user. Can be up to 253 characters in length.

Command Default

The password is in unencrypted clear text.

Command Modes

Username configuration

Line template configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

You can specify one of two types of passwords: encrypted or clear text.

When an XR EXEC modeprocess is started on a line that has password protection, the process prompts for the password. If the user enters the correct password, the process issues the prompt. The user can try three times to enter a password before the process exits and returns the terminal to the idle state.

Passwords are two-way encrypted and should be used for applications such as PPP that need decryptable passwords that can be decrypted.

Note

The show running-config command always displays the clear-text login password in encrypted form when the 0 option is used.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to establish the unencrypted password pwd1 for user. The output from the show command displays the password in its encrypted form.


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# username user1
RP/0/RP0/CPU0:router(config-un)# password 0 pwd1
RP/0/RP0/CPU0:router(config-un)# commit
RP/0/RP0/CPU0:router(config-un)# show running-config
Building configuration...
username user1
 password 7 141B1309

policy (AAA)

To configure a policy that is common for user password as well as secret, use the policy command in username configuration mode. To remove this configuration, use the no form of this command.

policy policy-name

Syntax Description


`policy-name`	Specifies the name of the policy that is common for user password as well as secret.

Command Default

None

Command Modes

username

Command History


Release	Modification
Release 7.2.1	This command was introduced.

Usage Guidelines

For detailed usage guidelines for this command, see the Guidelines to Configure Password Policy for User Secret section in the System Security Configuration Guide for Cisco NCS 5500 Series Routers.

Task ID


Task ID	Operation
aaa	read, write

Examples

This example shows how to configure a password policy that applies to both the password and the secret of the user.


Router#configure
Router(config)#username user1
Router(config-un)#policy test-policy1
Router(config-un)#secret 10 $6$dmwuW0Ajicf98W0.$y/vzynWF1/OcGxwBwHs79VAy5ZZLhoHd7TicR4mOo8IIVriYCGAKW0A.w1JvTPO7IbZry.DxHrE3SN2BBzBJe0
Router(config-un)#commit

Related Commands

Command	Description
username

aaa display-login-failed-users

Syntax Description


This command has no keywords or arguments.

Command Default

Disabled, by default

Command Modes

Global configuration mode

Command History


Release	Modification
Release 7.10.1	The command was introduced to make the display-login-failed-users option available to display user ID for failed user login attempts.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operation
aaa	read, write

Examples

This example shows how to enable the functioanlity to display the username for a failed authentication:


Router#Configure
Router(config)# aaa display-login-failed-users
Router(config)#commit

radius-server dead-criteria time

To specify the minimum amount of time, in seconds, that must elapse from the time that the router last received a valid packet from the RADIUS server to the time the server is marked as dead, use the radius-server dead-criteria time command in XR Config mode. To disable the criteria that were set, use the no form of this command.

radius-server dead-criteria time seconds

no radius-server dead-criteria time seconds

Syntax Description

seconds

Length of time, in seconds. The range is from 1 to120 seconds. If the seconds argument is not configured, the number of seconds ranges from 10 to 60, depending on the transaction rate of the server.

Note

The time criterion must be met for the server to be marked as dead.

Command Default

If this command is not used, the number of seconds ranges from 10 to 60 seconds, depending on the transaction rate of the server.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Note

If you configure the radius-server dead-criteria time command before the radius-server deadtime command, the radius-server dead-criteria time command may not be enforced.

If a packet has not been received since the router booted and there is a timeout, the time criterion is treated as though it were met.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to establish the time for the dead-criteria conditions for a RADIUS server to be marked as dead for the radius-server dead-criteria time command:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server dead-criteria time 5

radius-server dead-criteria tries

To specify the number of consecutive timeouts that must occur on the router before the RADIUS server is marked as dead, use the radius-server dead-criteria tries command in the XR Config mode. To disable the criteria that were set, use the no form of this command.

radius-server dead-criteria tries

no radius-server dead-criteria tries

Syntax Description

tries

Number of timeouts from 1 to 100. If the tries argument is not configured, the number of consecutive timeouts ranges from 10 to 100, depending on the transaction rate of the server and the number of configured retransmissions.

Note

The tries criterion must be met for the server to be marked as dead.

Command Default

If this command is not used, the number of consecutive timeouts ranges from 10 to 100, depending on the transaction rate of the server and the number of configured retransmissions.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

If the server performs both authentication and accounting, both types of packet are included in the number. Improperly constructed packets are counted as though they were timeouts. All transmissions, including the initial transmit and all retransmits, are counted.

Note

If you configure the radius-server dead-criteria tries command before the radius-server deadtime command, the radius-server dead-criteria tries command may not be enforced.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to establish the number of tries for the dead-criteria conditions for a RADIUS server to be marked as dead for the radius-server dead-criteria tries command:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server dead-criteria tries 4

radius-server deadtime (BNG)

To improve RADIUS response times when some servers are unavailable and cause the unavailable servers to be skipped immediately, use the radius-server deadtime command in the XR Config mode. To set deadtime to 0, use the no form of this command.

radius-server deadtime value

no radius-server deadtime value

Syntax Description


`value`	Length of time, in minutes, for which a RADIUS server is skipped over by transaction requests, up to a maximum of 1440 (24 hours). The range is from 1 to 1440. The default value is 0.

Command Default

Dead time is set to 0.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

A RADIUS server marked as dead is skipped by additional requests for the duration of minutes unless all other servers are marked dead and there is no rollover method.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example specifies five minutes of deadtime for RADIUS servers that fail to respond to authentication requests for the radius-server deadtime command:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server deadtime 5

radius-server host

To specify a RADIUS server host, use the radius-server host command in the Global Configuration mode. To delete the specified RADIUS host, use the no form of this command.

radius-server host ip-address [ auth-port port-number ] [ acct-port port-number ] [ timeout seconds ] [ retransmit retries ] [ key string ] [ dtls-server trustpoint string ] [ radsec-server trustpoint string ]

Syntax Description


`ip-address`	IP address of the RADIUS server host. IPv6 address is not supported.
auth-port `port-number`	(Optional) Specifies the RADIUS authentication port for authentication requests; the host is not used for authentication if set to 0.
acct-port `port-number`	(Optional) Specifies the RADIUS accounting port for accounting requests; the host is not used for accounting if set to 0.
timeout `seconds`	(Optional) The time interval (in seconds) that the router waits for the RADIUS server to reply before retransmitting. This setting overrides the global value of the radius-server timeout command. If no timeout value is specified, the global value is used. Enter a value in the range from 1 to 1000. The default is 5.
retransmit `retries`	(Optional) The number of times a RADIUS request is resent to a server, if that server is not responding or is responding slowly. This setting overrides the global setting of the radius-server retransmit command. If no retransmit value is specified, the global value is used. Enter a value in the range from 1 to 100. The default is 3.
key `string`	(Optional) Specifies the authentication and encryption key used between the router and the RADIUS server. This key overrides the global setting of the radius-server key command. If no key string is specified, the global value is used. The key is a text string that must match the encryption key used on the RADIUS server. Always configure the key as the last item in the radius-server host command syntax. This is because the leading spaces are ignored, but spaces within and at the end of the key are used. If you use spaces in the key, do not enclose the key in quotation marks unless the quotation marks themselves are part of the key.
dtls-server trustpoint `string`	(Optional) Specifies the details for RADIUS over DTLS support. The trustpoint is a text string that matches the Trustpoint to be used for RADIUS over DTLS configuration. The default destination port for RADIUS over DTLS is UDP 2083 for authentication and accounting.
radsec-server trustpoint `string`	(Optional) Specifies the details for RADIUS over TLS support. The trustpoint is a text string that matches the Trustpoint to be used for RADIUS over TLS configuration. The default destination port for RADIUS over TLS is TCP 2083 for authentication and accounting.

Command Default

No RADIUS host is specified; use global radius-server command values.

Command Modes

Global Configuration mode

Command History


Release	Modification
Release 7.0.12	This command was introduced.

Usage Guidelines

You can use multiple radius-server host commands to specify multiple hosts. The Cisco IOS XR software searches for hosts in the order in which you specify them.

If no host-specific timeout, retransmit, or key values are specified, the global values apply to each host.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to establish the host with IP address 172.29.39.46 as the RADIUS server, use ports 1612 and 1616 as the authorization and accounting ports, set the timeout value to 6, set the retransmit value to 5, and set “rad123” as the encryption key, matching the key on the RADIUS server:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server host 172.29.39.46 auth-port 1612 acct-port 1616 timeout 6 retransmit 5 key rad123

To use separate servers for accounting and authentication, use the zero port value as appropriate.

This example shows how to configure RADIUS with DTLS protection.

Router# configure
Router(config)#radius-server host 209.165.201.1
Router(config-radius-host)#retransmit 5
Router(config-radius-host)#timeout 10
Router(config-radius-host)#dtls-server trustpoint test
Router(config-radius-host)#commit

This example shows how to configure RADIUS with TLS protection.

Router# configure
Router(config)#radius-server host 209.165.201.1 auth-port 2083 acct-port 2083 radsec-server
Router(config-radius-host)#trustpoint test
Router(config-radius-host)#commit

Related Commands


Command	Description
aaa accounting subscriber	Creates a method list for accounting.
aaa authentication subscriber	Creates a method list for authentication.
aaa authorization subscriber	Creates a method list for authorization.
radius-server-key	Sets the authentication and encryption key for all RADIUS communications between the router and the RADIUS daemon.
radius-server retransmit (BNG)	Specifies how many times Cisco IOS XR software retransmits packets to a server before giving up.
radius-server timeout (BNG)	Sets the interval a router waits for a server host to reply.

radius-server key (BNG)

To set the authentication and encryption key for all RADIUS communications between the router and the RADIUS daemon, use the radius-server key command in the XR Config mode. To disable the key, use the no form of this command.

radius-server key { 0 clear-text-key | 6 encrypted-type6-key | 7 encrypted-key | Encrypt6 encrypted-key | clear-text-key | clear clear-text-key | encrypted encrypted-key }

Syntax Description

0 clear-text-key

Specifies an unencrypted (cleartext) shared key.

6 encrypted-type6-key

Specifies an type 6 encrypted shared key.

7 encrypted-key

Specifies an encrypted shared key.

Encrypt6 encrypted-key

Specifies an unencrypted (cleartext) shared key to be encrypted in type6.

clear-text-key

Specifies an unencrypted (cleartext) user password.

clear clear-text-key

Specifies an unencrypted (cleartext) shared key.

Note

This option is decrypted from release 7.4.1. Use keyword 0

encrypted encrypted-key

Specifies an encrypted shared key.

Note

This option is decrypted from release 7.4.1. Use keyword 7

Command Default

The authentication and encryption key is disabled.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The key entered must match the key used on the RADIUS server. All leading spaces are ignored, but spaces within and at the end of the key are used. If you use spaces in your key, do not enclose the key in quotation marks unless the quotation marks themselves are part of the key.

The minimum character length of the key is 1 and maximum character length of the key is 48.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to set the cleartext key to “samplekey”:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server key 0 samplekey

This example shows how to set the encrypted shared key to “anykey”:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius-server key 7 anykey

radius-server retransmit (BNG)

To specify the number of times the Cisco IOS XR software retransmits a packet to a server before giving up, use the radius-server retransmit command in the XR Config mode. The no form of this command sets it to the default value of 3 .

radius-server retransmit { retries disable}

no radius-server retransmit { retries disable}

Syntax Description


`retries`	Maximum number of retransmission attempts. The range is from 1 to 100. Default is 3.
disable	Disables the radius-server transmit command.

Command Default

The RADIUS servers are retried three times, or until a response is received.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The RADIUS client tries all servers, allowing each one to time out before increasing the retransmit count.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to specify a retransmit counter value of five times:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# radius-server retransmit 5

radius-server timeout (BNG)

To set the interval for which a router waits for a server host to reply before timing out, use the radius-server timeout command in the XR Config mode. To restore the default, use the no form of this command.

radius-server timeout seconds

no radius-server timeout

Syntax Description


`seconds`	Number that specifies the timeout interval, in seconds. Range is from 1 to 1000.

Command Default

The default radius-server timeout value is 5 seconds.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the radius-server timeout command to set the number of seconds a router waits for a server host to reply before timing out.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to change the interval timer to 10 seconds:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# radius-server timeout 10

radius source-interface (BNG)

To force RADIUS to use the IP address of a specified interface or subinterface for all outgoing RADIUS packets, use the radius source-interface command in the XR Config mode. To prevent only the specified interface from being the default and not from being used for all outgoing RADIUS packets, use the no form of this command.

radius source-interface interface [vrf vrf_name]

no radius source-interface interface

Syntax Description


`interface-name`	Name of the interface that RADIUS uses for all of its outgoing packets.
vrf `vrf-id`	Specifies the name of the assigned VRF.

Command Default

If a specific source interface is not configured, or the interface is down or does not have an IP address configured, the system selects an IP address.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the radius source-interface command to set the IP address of the specified interface or subinterface for all outgoing RADIUS packets. This address is used as long as the interface or subinterface is in the up state. In this way, the RADIUS server can use one IP address entry for every network access client instead of maintaining a list of IP addresses.

The specified interface or subinterface must have an IP address associated with it. If the specified interface or subinterface does not have an IP address or is in the down state, then RADIUS reverts to the default. To avoid this, add an IP address to the interface or subinterface or bring the interface to the up state.

The radius source-interface command is especially useful in cases in which the router has many interfaces or subinterfaces and you want to ensure that all RADIUS packets from a particular router have the same IP address.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to make RADIUS use the IP address of subinterface s2 for all outgoing RADIUS packets:


RP/0/RP0/CPU0:router# configure
RP/0/RP0/CPU0:router(config)# radius source-interface loopback 10 vrf vrf1

restrict-consecutive-characters

To restrict consecutive characters (that includes regular English alphabets, and English alphabets from QWERTY keyboard layout and numbers), for user passwords and secrets, use the restrict-consecutive-characters command in aaa password-policy configuration mode. To disable the feature, use the no form of the command.

restrict-consecutive-characters { english-alphabet | qwerty-keyboard } num-of-chars [cyclic-wrap]

Syntax Description


english-alphabet	Restricts consecutive English alphabets for user passwords and secrets. For example, "abcd", "wxyz", and so on.
qwerty-keyboard	Restricts consecutive English alphabets from QWERTY keyboard layout and numbers, for user passwords and secrets. For example, "qwer", "mnbv", "7890", and so on.
`num-of-chars`	Specifies the number of consecutive characters to be restricted for user passwords and secrets. Range is 2 to 26, for english-alphabet . Range is 2 to 10, for qwerty-keyboard .
cyclic-wrap	Restricts cyclic wrapping of the alphabet or the number for user passwords and secrets. For example, "yzab", "opqw", "9012", and so on.

Command Default

Disabled, by default.

Command Modes

aaa password-policy configuration mode

Command History


Release	Modification
Release 7.7.1	This command was introduced.

Usage Guidelines

All password policies are applicable only to locally configured users.

After creating the password policy, you must explicitly apply that policy to the user profiles so that the password policy take effect in the password and secret configuration.

For more details about the feature and configuration task, see the section Enhanced Security for User Passwords and Secrets in Configuring AAA Services chapter in the System Security Configuration Guide for Cisco NCS 5500 Series Routers.

Among the NCS540 router variants, this command is applicable only for the following variants:

N540-28Z4C-SYS-A/D
N540X-16Z4G8Q2C-A/D
N540-12Z20G-SYS-A/D
N540X-12Z16G-SYS-A/D

Task ID


Task ID	Operation
aaa	read, write

Examples

This example shows how to configure a AAA password policy that restricts cyclic wrapping of four consecutive English alphabets and six consecutive characters from QWERTY keyboard.


Router(config)#aaa password-policy test-policy
Router(config-pp)#restrict-consecutive-characters english-alphabet 4 cyclic-wrap
Router(config-pp)#restrict-consecutive-characters qwerty-keyboard 6

This example shows how to apply the password policy to the user profile, user1 :


Router(config)#username user1
Router(config-un)#policy test-policy 
Router(config-un)#commit

Related Commands

Command	Description
aaa password-policy	Defines the FIPS-compliant AAA password security policy.

secret

To configure an encrypted or clear-text password for the user, use the secret command in username configuration mode or line template configuration mode. To remove this configuration, use the no form of this command.

secret [0 [enc-type enc-type-value] | 5 | 8 | 9 | 10] secret-login

no secret

Syntax Description

0

(Optional) Specifies that an unencrypted (clear-text) password follows. The password will be encrypted for storage in the configuration using an MD5 encryption algorithm. Otherwise, the password is not encrypted.

5

Specifies that an encrypted MD5 password (secret) follows.

8

(Optional) Specifies that SHA256-encrypted password follows.

9

(Optional) Specifies that scrypt-encrypted password follows.

10

(Optional) Specifies that SHA512-encrypted password follows.

secret-login

Text string in alphanumeric characters that is stored as the MD5-encrypted password entered by the user in association with the user’s login ID.

Can be up to 253 characters in length.

Note

The characters entered must conform to MD5 encryption standards.

enc-type

(Optional) Configures the encryption type for a password entered in clear text.

enc-type-value

Specifies the encryption type to be used.

Command Default

No password is specified.

Command Modes

Username configuration

Line template configuration

Command History


Release	Modification
Release 6.0	This command was introduced.
Release 7.0.1	Added the support for Type 8 (SHA256), Type 9 (scrypt) and Type 10 (SHA512) encryption for secret configuration.
Release 7.0.1	Added the support for enc-type option under secret 0 to specify the type of encryption for password entered in clear-text format.

Usage Guidelines

From Release 7.0.1 and later, Type 10 encryption is applied as the default encryption type for the secret on Cisco IOS XR 64-bit operating systems. Prior to this, Type 5 (MD5) was the default one.

Prior to Release 7.0.1, Cisco IOS XR software allows you to configure only Message Digest 5 (MD5) encryption for username logins and passwords. MD5 encryption is a one-way hash function that makes reversal of an encrypted password impossible, providing strong encryption protection. Using MD5 encryption, you cannot retrieve clear-text passwords. Therefore, MD5 encrypted passwords cannot be used with protocols that require the clear-text password to be retrievable, such as Challenge Handshake Authentication Protocol (CHAP).

Prior to Release 7.0.1, you can specify only one of two types of secure secret IDs: encrypted (5) or clear text (0). If you do not select either 0 or 5, the clear-text password you enter is not encrypted.

When an XR EXEC mode process is started on a line that has password protection, the process prompts for the secret. If the user enters the correct secret, the process issues the prompt. The user can try entering the secret thrice before the terminal returns to the idle state.

Secrets are one-way encrypted and should be used for login activities that do not require a decryptable secret.

To verify that MD5 password encryption has been enabled, use the show running-config command. The “username name secret 5” line in the command output indicates the same.

Note

The show running-config command does not display the login password in clear text when the 0 option is used to specify an unencrypted password. See the “Examples” section.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to establish the clear-text secret “lab” for the user user2 :


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# username user2    
RP/0/RP0/CPU0:router(config-un)# secret 0 lab   
RP/0/RP0/CPU0:router(config-un)# commit 
RP/0/RP0/CPU0:router(config-un)# show running-config 
Building configuration...
username user2
 secret 5 $1$DTmd$q7C6fhzje7Cc7Xzmu2Frx1
!
end

The following examples show how to configure a Type 10 (SHA512) password for the user, user10 . You can also see the examples and usage of the username command.

You can specify Type as '10' under the secret keyword, to explicitly configure Type 10 password.


Router#configure
Router(config)#username user10 secret 10 $6$9UvJidvsTEqgkAPU$3CL1Ei/F.E4v/Hi.UaqLwX8UsSEr9ApG6c5pzhMJmZtgW4jObAQ7meAwyhu5VM/aRFJqe/jxZG17h6xPrvJWf1
Router(config-un)#commit

You can also use the enc-type keyword under the secret 0 option, to specify Type 10 as the encryption for a password entered in clear text.


Router#configure
Router(config)#username user10 secret 0 enc-type 10 testpassword 
Router(config-un)#commit

server (RADIUS)

To associate a particular RADIUS server with a defined server group, use the server command in RADIUS server-group configuration mode. To remove the associated server from the server group, use the no form of this command.

server ip-address [auth-port port-number] [acct-port port-number]

no server ip-address [auth-port port-number] [acct-port port-number]

Syntax Description


`ip-address`	IP address of the RADIUS server host.
auth-port `port-number`	(Optional) Specifies the User Datagram Protocol (UDP) destination port for authentication requests. The port-number argument specifies the port number for authentication requests. The host is not used for authentication if this value is set to 0. Default is 1645.
acct-port `port-number`	(Optional) Specifies the UDP destination port for accounting requests. The port-number argument specifies the port number for accounting requests. The host is not used for accounting services if this value is set to 0. Default is 1646.

Command Default

If no port attributes are defined, the defaults are as follows:

Authentication port: 1645
Accounting port: 1646

Command Modes

RADIUS server-group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the server command to associate a particular RADIUS server with a defined server group.

There are two different ways in which you can identify a server, depending on the way you want to offer AAA services. You can identify the server simply by using its IP address, or you can identify multiple host instances or entries using the optional auth-port and acct-port keywords.

When you use the optional keywords, the network access server identifies RADIUS security servers and host instances associated with a group server based on their IP address and specific UDP port numbers. The combination of the IP address and UDP port number creates a unique identifier, allowing different ports to be individually defined as RADIUS host entries providing a specific AAA service. If two different host entries on the same RADIUS server are configured for the same service, for example, accounting, the second host entry configured acts as an automatic switchover backup to the first one. Using this example, if the first host entry fails to provide accounting services, the network access server tries the second host entry configured on the same device for accounting services. (The RADIUS host entries are tried in the order they are configured.)

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to use two different host entries on the same RADIUS server that are configured for the same services—authentication and accounting. The second host entry configured acts as switchover backup to the first one.


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server radius group1 
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.1.1.1 auth-port 1645 acct-port 1646 
RP/0/RP0/CPU0:router(config-sg-radius)# server 10.2.2.2 auth-port 2000 acct-port 2001

server (TACACS+)

To associate a particular TACACS+ server with a defined server group, use the server command in TACACS+ server-group configuration mode. To remove the associated server from the server group, use the no form of this command.

server {hostname | ip-address}

no server {hostname | ip-address}

Syntax Description


`hostname`	Character string used to name the server host.
`ip-address`	IP address of the server host.

Command Default

None

Command Modes

TACACS+ server-group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the server command to associate a particular TACACS+ server with a defined server group. The server need not be accessible during configuration. Later, you can reference the configured server group from the method lists used to configure authentication, authorization, and accounting (AAA).

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to associate the TACACS+ server with the IP address 192.168.60.15 with the server group tac1:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server tacacs+ tac1 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server 192.168.60.15

server-private (RADIUS)

To configure the IP address of the private RADIUS server for the group server, use the server-private command in RADIUS server-group configuration mode. To remove the associated private server from the AAA group server, use the no form of this command.

server-private ip-address [auth-port port-number] [acct-port port-number] [timeout seconds] [retransmit retries] [key string]

no server-private ip-address [auth-port port-number] [acct-port port-number] [timeout seconds] [retransmit retries] [key string]

Syntax Description


`ip-address`	IP address of the RADIUS server host.
auth-port `port-number`	(Optional) Specifies the User Datagram Protocol (UDP) destination port for authentication requests. The port-number argument specifies the port number for authentication requests. The host is not used for authentication if this value is set to 0. The default value is 1645.
acct-port `port-number`	(Optional) Specifies the UDP destination port for accounting requests. The port-number argument specifies the port number for accounting requests. The host is not used for accounting services if this value is set to 0. The default value is 1646.
timeout `seconds`	(Optional) Specifies the number of seconds the router waits for the RADIUS server to reply before retransmitting. The setting overrides the global value of the radius-server timeout command. If no timeout is specified, the global value is used. The `seconds` argument specifies the timeout value in seconds. The range is from 1 to 1000. If no timeout is specified, the global value is used.
retransmit `retries`	(Optional) Specifies the number of times a RADIUS request is resent to a server if the server is not responding or is responding slowly. The setting overrides the global setting of the radius-server transmit command. The `retries` argument specifies the retransmit value. The range is from 1 to 100. If no retransmit value is specified, the global value is used.
key `string`	(Optional) Specifies the authentication and encryption key that is used between the router and the RADIUS daemon running on the RADIUS server. This key overrides the global setting of the radius-server key command. If no key string is specified, the global value is used.

Command Default

If no port attributes are defined, the defaults are as follows:

Authentication port: 1645
Accounting port: 1646

Command Modes

RADIUS server-group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the server-private command to associate a particular private server with a defined server group. Possible overlapping of IP addresses between VRF instances are permitted. Private servers (servers with private addresses) can be defined within the server group and remain hidden from other groups, while the servers in the global pool (for example, default radius server group) can still be referred to by IP addresses and port numbers. Thus, the list of servers in server groups includes references to the hosts in the configuration and the definitions of private servers.

Both the auth-port and acct-port keywords enter RADIUS server-group private configuration mode.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to define the group1 RADIUS group server, to associate private servers with it, and to enter RADIUS server-group private configuration mode:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server radius group1 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 timeout 5 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 retransmit 3 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 key coke 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 auth-port 300 
RP/0/RP0/CPU0:router(config-sg-radius-private)# exit 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 timeout 5 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 retransmit 3 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 key coke 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.2.2.2 auth-port 300 
RP/0/RP0/CPU0:router(config-sg-radius-private)#


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server radius group1 
RP/0/RP0/CPU0:router(config-sg-radius)# server-private 10.1.1.1 auth-port 300 
RP/0/RP0/CPU0:router(config-sg-radius-private)# exit 
(config-sg-radius)# server-private 10.2.2.2 auth-port 300 
RP/0/RP0/CPU0:router(config-sg-radius-private)#

server-private (TACACS+)

To configure the IP address of the private TACACS+ server for the group server, use the server-private command in TACACS+ server-group configuration mode. To remove the associated private server from the AAA group server, use the no form of this command.

server-private {hostname | ip-address} [ holddown-time time ] [port port-number] [timeout seconds] [key string]

no server-private {hostname | ip-address}

Syntax Description


`hostname`	Character string used to name the server host.
`ip-address`	IP address of the TACACS+ server host. Both IPv4 and IPv6 addresses are supported.
holddown-time `time`	Specifies a duration, in seconds, for which an unresponsive TACACS+ server is to be marked as DOWN. The range is from 0 to 1200. Zero indicates that the hold-down timer feature is disabled.
port `port-number`	(Optional) Specifies a server port number. This option overrides the default, which is port 49. Valid port numbers range from 1 to 65535.
timeout `seconds`	(Optional) Specifies, in seconds, a timeout value that sets the length of time the authentication, authorization, and accounting (AAA) server waits to receive a response from the TACACS+ server. This option overrides the global timeout value set with the tacacs-server timeout command for only this server. The range is from 1 to 1000. The default is 5.
key `string`	(Optional) Specifies the authentication and encryption key that is used between the router and the TACACS+ daemon running on the TACACS+ server. This key overrides the global setting of the tacacs-server key command. If no key string is specified, the global value is used.

Command Default

The port-name argument, if not specified, defaults to the standard port 49.

The seconds argument, if not specified, defaults to 5 seconds.

Command Modes

TACACS+ server-group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.
Release 7.4.1	This command was modified to include holddown-time option.

Usage Guidelines

Use the server-private command to associate a particular private server with a defined server group. Possible overlapping of IP addresses between VRF instances are permitted. Private servers (servers with private addresses) can be defined within the server group and remain hidden from other groups, while the servers in the global pool (for example, default tacacs+ server group) can still be referred by IP addresses and port numbers. Therefore, the list of servers in server groups includes references to the hosts in the global configuration and the definitions of private servers.

For details on TACACS+ hold-down timer, see the holddown-time command.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to define the myserver TACACS+ group server, to associate private servers with it, and to enter TACACS+ server-group private configuration mode:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server tacacs+ myserver 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server-private 10.1.1.1 timeout 5 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server-private 10.1.1.1 key a_secret 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server-private 10.1.1.1 port 51 
RP/0/RP0/CPU0:router(config-sg-tacacs-private)# exit 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server-private 10.2.2.2 timeout 5 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server-private 10.2.2.2 key coke 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server-private 10.2.2.2 port 300 
RP/0/RP0/CPU0:router(config-sg-tacacs-private)#

show aaa (XR-VM)

To display information about an Internet Key Exchange (IKE) Security Protocol group, user group, local user, login traces, or task group; to list all task IDs associated with all IKE groups, user groups, local users, or task groups in the system; or to list all task IDs for a specified IKE group, user group, local user, or task group, use the show aaa command in the XR EXEC mode.

show aaa {ikegroup ikegroup-name | login trace | usergroup [usergroup-name] | trace | userdb [username] | task supported | taskgroup [root-lr | netadmin | operator | sysadmin | root-system | service-admin | cisco-support | taskgroup-name]}

Syntax Description

ikegroup

Displays details for all IKE groups.

ikegroup-name

(Optional) IKE group whose details are to be displayed.

login trace

Displays trace data for login subsystem.

usergroup

Displays details for all user groups.

root-lr

(Optional) Usergroup name.

netadmin

(Optional) Usergroup name.

operator

(Optional) Usergroup name.

sysadmin

(Optional) Usergroup name.

root-system

(Optional) Usergroup name.

cisco-support

(Optional) Usergroup name.

usergroup-name

(Optional) Usergroup name.

trace

Displays trace data for AAA subsystem.

userdb

Displays details for all local users and the usergroups to which each user belongs.

username

(Optional) User whose details are to be displayed.

task supported

Displays all AAA task IDs available.

taskgroup

Displays details for all task groups.

Note

For taskgroup keywords, see optional usergroup name keyword list.

taskgroup-name

(Optional) Task group whose details are to be displayed.

Command Default

Details for all user groups, or all local users, or all task groups are listed if no argument is entered.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the show aaa command to list details for all IKE groups, user groups, local users, AAA task IDs, or task groups in the system. Use the optional ikegroup-name , usergroup-name , username , or taskgroup-name argument to display the details for a specified IKE group, user group, user, or task group, respectively.

Task ID


Task ID	Operations
aaa	read

Examples

The following sample output is from the show aaa command, using the ikegroup keyword:


RP/0/RP0/CPU0:router# show aaa ikegroup

IKE Group ike-group
        Max-Users = 50
IKE Group ikeuser
        Group-Key = test-password
        Default Domain = cisco.com
IKE Group ike-user

The following sample output is from the show aaa command, using the usergroup command:


RP/0/RP0/CPU0:router# show aaa usergroup operator

User group 'operator'
  Inherits from task group 'operator'
User group 'operator' has the following combined set
of task IDs (including all inherited groups):
Task:       basic-services  : READ    WRITE    EXECUTE DEBUG
Task:                  cdp  : READ
Task:                 diag  : READ
Task:           ext-access  : READ             EXECUTE
Task:              logging  : READ

The following sample output is from the show aaa command, using the taskgroup keyword for a task group named netadmin:


RP/0/RP0/CPU0:router# show aaa taskgroup netadmin

Task group 'netadmin'

Task group 'netadmin' has the following combined set
  of task IDs (including all inherited groups):

Task:                  aaa  : READ                             
Task:                  acl  : READ    WRITE    EXECUTE    DEBUG
Task:                admin  : READ                             
Task:                 ancp  : READ    WRITE    EXECUTE    DEBUG
Task:                  atm  : READ    WRITE    EXECUTE    DEBUG
Task:       basic-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 bcdl  : READ                             
Task:                  bfd  : READ    WRITE    EXECUTE    DEBUG
Task:                  bgp  : READ    WRITE    EXECUTE    DEBUG
Task:                 boot  : READ    WRITE    EXECUTE    DEBUG
Task:               bundle  : READ    WRITE    EXECUTE    DEBUG
Task:                  cdp  : READ    WRITE    EXECUTE    DEBUG
Task:                  cef  : READ    WRITE    EXECUTE    DEBUG
Task:                  cgn  : READ    WRITE    EXECUTE    DEBUG
Task:          config-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:      config-services  : READ    WRITE    EXECUTE    DEBUG
Task:               crypto  : READ    WRITE    EXECUTE    DEBUG
Task:                 diag  : READ    WRITE    EXECUTE    DEBUG
Task:              drivers  : READ                             
Task:                 dwdm  : READ    WRITE    EXECUTE    DEBUG
Task:                  eem  : READ    WRITE    EXECUTE    DEBUG
Task:    ethernet-services  : READ                             
Task:           ext-access  : READ    WRITE    EXECUTE    DEBUG
Task:               fabric  : READ    WRITE    EXECUTE    DEBUG
Task:            fault-mgr  : READ    WRITE    EXECUTE    DEBUG
Task:           filesystem  : READ    WRITE    EXECUTE    DEBUG
Task:             firewall  : READ    WRITE    EXECUTE    DEBUG
Task:                   fr  : READ    WRITE    EXECUTE    DEBUG
Task:                 hdlc  : READ    WRITE    EXECUTE    DEBUG
Task:        host-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 hsrp  : READ    WRITE    EXECUTE    DEBUG
Task:            interface  : READ    WRITE    EXECUTE    DEBUG
Task:            inventory  : READ                             
Task:          ip-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv4  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv6  : READ    WRITE    EXECUTE    DEBUG
Task:                 isis  : READ    WRITE    EXECUTE    DEBUG
Task:                l2vpn  : READ    WRITE    EXECUTE    DEBUG
Task:                   li  : READ    WRITE    EXECUTE    DEBUG
Task:              logging  : READ    WRITE    EXECUTE    DEBUG
Task:                 lpts  : READ    WRITE    EXECUTE    DEBUG
Task:              monitor  : READ                             
Task:             mpls-ldp  : READ    WRITE    EXECUTE    DEBUG
Task:          mpls-static  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-te  : READ    WRITE    EXECUTE    DEBUG
Task:            multicast  : READ    WRITE    EXECUTE    DEBUG
Task:              netflow  : READ    WRITE    EXECUTE    DEBUG
Task:              network  : READ    WRITE    EXECUTE    DEBUG
Task:                 ospf  : READ    WRITE    EXECUTE    DEBUG
Task:                 ouni  : READ    WRITE    EXECUTE    DEBUG
Task:             pkg-mgmt  : READ                             

Task:                  ppp  : READ    WRITE    EXECUTE    DEBUG
Task:                  qos  : READ    WRITE    EXECUTE    DEBUG
Task:                  rib  : READ    WRITE    EXECUTE    DEBUG
Task:                  rip  : READ    WRITE    EXECUTE    DEBUG
Task:              root-lr  : READ                              (reserved)
Task:            route-map  : READ    WRITE    EXECUTE    DEBUG
Task:         route-policy  : READ    WRITE    EXECUTE    DEBUG
Task:                  sbc  : READ    WRITE    EXECUTE    DEBUG
Task:                 snmp  : READ    WRITE    EXECUTE    DEBUG
Task:            sonet-sdh  : READ    WRITE    EXECUTE    DEBUG
Task:               static  : READ    WRITE    EXECUTE    DEBUG
Task:               sysmgr  : READ                             
Task:               system  : READ    WRITE    EXECUTE    DEBUG
Task:            transport  : READ    WRITE    EXECUTE    DEBUG
Task:           tty-access  : READ    WRITE    EXECUTE    DEBUG
Task:               tunnel  : READ    WRITE    EXECUTE    DEBUG
Task:            universal  : READ                              (reserved)
Task:                 vlan  : READ    WRITE    EXECUTE    DEBUG
Task:                 vrrp  : READ    WRITE    EXECUTE    DEBUG

The following sample output is from the show aaa command, using the taskgroup keyword for an operator. The task group operator has the following combined set of task IDs, which includes all inherited groups:


Task:       basic-services  : READ    WRITE    EXECUTE    DEBUG
Task:                  cdp  : READ                              
Task:                 diag  : READ                              
Task:           ext-access  : READ             EXECUTE          
Task:              logging  : READ

The following sample output is from the show aaa task group displaying the different task groups:

  Task IDs included directly by this group:
  Task:                  aaa  : READ
  Task:                  acl  : READ
  Task:                admin  : READ
  Task:       basic-services  : READ
  Task:                 boot  : READ
  Task:        cisco-support  : READ                              (reserved)
  Task:          config-mgmt  : READ
  Task:      config-services  : READ
  Task:               crypto  : READ
  Task:                 dwdm  : READ
  Task:    ethernet-services  : READ
  Task:               fabric  : READ
  Task:            fault-mgr  : READ
  Task:           filesystem  : READ
  Task:                 hdlc  : READ
  Task:        host-services  : READ
  Task:                 hsrp  : READ
  Task:            interface  : READ
  Task:            inventory  : READ
  Task:          ip-services  : READ
  Task:                 ipv4  : READ
  Task:                 ipv6  : READ
  Task:              logging  : READ
  Task:              mpls-te  : READ

The following sample output is from show aaa command with the userdb keyword:


RP/0/RP0/CPU0:router# show aaa userdb

Username lab (admin plane)
User group root-system
User group cisco-support
Username acme
User group root-system

The following sample output is from the show aaa command, using the task supported keywords. Task IDs are displayed in alphabetic order.


RP/0/RP0/CPU0:router# show aaa task supported

aaa
acl
admin
atm
basic-services
bcdl
bfd
bgp
boot
bundle
cdp
cef
cisco-support
config-mgmt
config-services
crypto
diag
disallowed
drivers
ext-access
fabric
fault-mgr
filesystem
firewall
fr
hdlc
host-services
hsrp
interface
inventory
ip-services
ipv4
ipv6
isis
logging
lpts
monitor
mpls-ldp
mpls-static
mpls-te
multicast
netflow
network
ospf
ouni
pkg-mgmt

ppp
qos
rib
rip
User group root-systemlrlr
root-system
route-map
route-policy
sbc
snmp
sonet-sdh
static
sysmgr
system
transport
tty-access
tunnel
universal
vlan
vrrp

show aaa accounting

To display command history with the date and time for AAA sub-system, use the show aaa accounting command in the System Admin EXEC mode. You must have a group aaa-r or root-system on System Admin VM.

show aaa accounting

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

System Admin EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operation
aaa	read

Examples

This is the sample output of the show aaa accounting command:


sysadmin-vm:0_RP0#show aaa accounting	
Mon Nov  3  13:37:21.573 UTC

Detail audit log information
  Time                     Username          Session-ID     Node-Information     Command
---------------------------------------------------------------------------------------------------
2014-11-03.13:14:27 UTC      root                   17         System        logged in from the CLI with aaa disabled
..
…
2014-11-03.13:37:01 UTC      cisco                  57         0/RP0         assigned to groups: root-system
2014-11-03.13:37:03 UTC      cisco                  57         0/RP0         CLI 'config terminal'
2014-11-03.13:37:03 UTC      cisco                  57         0/RP0         CLI done
2014-11-03.13:37:09 UTC      cisco                  57         0/RP0         CLI 'aaa authentication users user temp'
2014-11-03.13:37:09 UTC      cisco                  57         0/RP0         CLI done
2014-11-03.13:37:11 UTC      cisco                  57         0/RP0         CLI 'password ****
2014-11-03.13:37:11 UTC      cisco                  57         0/RP0         CLI done
2014-11-03.13:37:12 UTC      cisco                  57         0/RP0         CLI 'commit'
2014-11-03.13:37:14 UTC      cisco                  57         0/RP0         CLI done
2014-11-03.13:37:16 UTC      cisco                  57         0/RP0         CLI 'exit'
2014-11-03.13:37:16 UTC      cisco                  57         0/RP0         CLI done
2014-11-03.13:37:18 UTC      cisco                  57         0/RP0         CLI 'exit'
2014-11-03.13:37:18 UTC      cisco                  57         0/RP0         CLI done
2014-11-03.13:37:21 UTC      cisco                  57         0/RP0         CLI 'show aaa accounting'

show aaa password-policy

To display the details of AAA password policy configured in a system, use the show aaa password-policy command in XR EXEC mode.

show aaa password-policy [policy-name]

Syntax Description


`policy-name`	Specifies the name of password policy.

Command Default

None

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.2.1	This command was introduced.

Usage Guidelines

If the option policy-name is not specified, the command output displays the details of all password policies configured in the system.

Refer aaa password-policy command details of each field in this command output.

Task ID


Task ID	Operation
aaa	read

Examples

This is a sample out of show aaa password-policy command:


RP/0/RP0/CPU0:router#show aaa password-policy test-policy

Fri Feb  3 16:50:58.086 EDT
Password Policy Name : test-policy
  Number of Users : 1
  Minimum Length : 2
  Maximum Length : 253
  Special Character Len : 0
  Uppercase Character Len : 0
  Lowercase Character Len : 1
  Numeric Character Len : 0
  Policy Life Time :
    seconds : 0
    minutes : 0
    hours : 0
    days : 0
    months : 0
    years : 0
  Lockout Time :
    seconds : 0
    minutes : 0
    hours : 0
    days : 0
    months : 0
    years : 0
  Character Change Len : 4
  Maximum Failure Attempts : 0

Related Commands

Command	Description
aaa password-policy	Defines the FIPS-compliant AAA password security policy.

show radius

To display information about the RADIUS servers that are configured in the system, use the show radius command in the XR EXEC mode.

show radius

Syntax Description

This command has no keywords or arguments.

Command Default

If no radius servers are configured, no output is displayed.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the show radius command to display statistics for each configured RADIUS server.

Task ID


Task ID	Operations
aaa	read

Examples

The following sample output is for the show radius command:


RP/0/RP0/CPU0:router# show radius

Global dead time: 0 minute(s)

Server: 10.1.1.1/1645/1646  is UP
  Timeout: 5 sec, Retransmit limit: 3
  Quarantined: No
  Authentication:
    0 requests, 0 pending, 0 retransmits
    0 accepts, 0 rejects, 0 challenges
    0 timeouts, 0 bad responses, 0 bad authenticators
    0 unknown types, 0 dropped, 0 ms latest rtt
  Accounting:
    0 requests, 0 pending, 0 retransmits
    0 responses, 0 timeouts, 0 bad responses
    0 bad authenticators, 0 unknown types, 0 dropped
    0 ms latest rtt

Server: 10.2.2.2/1645/1646  is UP
  Timeout: 10 sec, Retransmit limit: 3
  Authentication:
    0 requests, 0 pending, 0 retransmits
    0 accepts, 0 rejects, 0 challenges
    0 timeouts, 0 bad responses, 0 bad authenticators
    0 unknown types, 0 dropped, 0 ms latest rtt
  Accounting:
    0 requests, 0 pending, 0 retransmits
    0 responses, 0 timeouts, 0 bad responses
    0 bad authenticators, 0 unknown types, 0 dropped
    0 ms latest rtt

This table describes the significant fields shown in the display.

Table 1. show radius Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests/UDP destination port for accounting requests.
Timeout	Number of seconds the router waits for a server host to reply before timing out.
Retransmit limit	Number of times the Cisco IOS XR software searches the list of RADIUS server hosts before giving up.

show radius accounting

To obtain information and detailed statistics for the RADIUS accounting server and port, use the show radius accounting command in the XR EXEC mode

show radius accounting

Syntax Description

This command has no keywords or arguments.

Command Default

If no RADIUS servers are configured on the router, the output is empty. If the default values are for the counter (for example, request and pending), the values are all zero because the RADIUS server was just defined and not used yet.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
aaa	read

Examples

The following sample output is displayed on a per-server basis for the show radius accounting command:


RP/0/RP0/CPU0:router# show radius accounting

Server: 12.26.25.61, port: 1813
0 requests, 0 pending, 0 retransmits
0 responses, 0 timeouts, 0 bad responses
0 bad authenticators, 0 unknown types, 0 dropped
0 ms latest rtt

Server: 12.26.49.12, port: 1813
0 requests, 0 pending, 0 retransmits
0 responses, 0 timeouts, 0 bad responses
0 bad authenticators, 0 unknown types, 0 dropped
0 ms latest rtt

Server: 12.38.28.18, port: 29199
0 requests, 0 pending, 0 retransmits
0 responses, 0 timeouts, 0 bad responses
0 bad authenticators, 0 unknown types, 0 dropped
0 ms latest rtt

This table describes the significant fields shown in the display.

Table 2. show radius accounting Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests; UDP destination port for accounting requests.

show radius authentication

To obtain information and detailed statistics for the RADIUS authentication server and port, use the show radius authentication command in the XR EXEC mode.

show radius authentication

Syntax Description

This command has no keywords or arguments.

Command Default

If no RADIUS servers are configured on the router, the output is empty. If the default values are for the counter (for example, request and pending), the values are all zero because the RADIUS server was just defined and not used yet.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
aaa	read

Examples

The following sample output is for the show radius authentication command:


RP/0/RP0/CPU0:router# show radius authentication 

Server: 12.26.25.61, port: 1812
0 requests, 0 pending, 0 retransmits
0 accepts, 0 rejects, 0 challenges
0 timeouts, 0 bad responses, 0 bad authenticators
0 unknown types, 0 dropped, 0 ms latest rtt

Server: 12.26.49.12, port: 1812
0 requests, 0 pending, 0 retransmits
0 accepts, 0 rejects, 0 challenges
0 timeouts, 0 bad responses, 0 bad authenticators
0 unknown types, 0 dropped, 0 ms latest rtt

Server: 12.38.28.18, port: 21099
0 requests, 0 pending, 0 retransmits
0 accepts, 0 rejects, 0 challenges
0 timeouts, 0 bad responses, 0 bad authenticators
0 unknown types, 0 dropped, 0 ms latest rtt

This table describes the significant fields shown in the display.

Table 3. show radius authentication Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests; UDP destination port for accounting requests.

show radius dead-criteria

To obtain information about the dead server detection criteria, use the show radius dead-criteria command in the XR EXEC mode.

show radius dead-criteria host ip-addr [auth-port auth-port] [acct-port acct-port]

Syntax Description


host `ip-addr`	Specifies the name or IP address of the configured RADIUS server.
auth-port `auth-port`	(Optional) Specifies the authentication port for the RADIUS server. The default value is 1645.
acct-port `acct-port`	(Optional) Specifies the accounting port for the RADIUS server. The default value is 1646.

Command Default

The default values for time and tries are not fixed to a single value; therefore, they are calculated and fall within a range of 10 to 60 seconds for time and 10 to 100 for tries.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
aaa	read

Examples

The following sample output is for the show radius dead-criteria command:


RP/0/RP0/CPU0:router# show radius dead-criteria host 12.26.49.12 auth-port 11000 acct-port 11001 

Server: 12.26.49.12/11000/11001
Dead criteria time: 10 sec (computed) tries: 10 (computed)

This table describes the significant fields shown in the display.

Table 4. show radius dead-criteria Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests/UDP destination port for accounting requests.
Timeout	Number of seconds the router waits for a server host to reply before timing out.
Retransmits	Number of times Cisco IOS XR software searches the list of RADIUS server hosts before giving up.

show radius server-groups

To display information about the RADIUS server groups that are configured in the system, use the show radius server-groups command in the XR EXEC mode.

show radius server-groups [group-name [detail]]

Syntax Description


`group-name`	(Optional) Name of the server group. The properties are displayed.
detail	(Optional) Displays properties for all the server groups.

Command Default

None

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the show radius server-groups command to display information about each configured RADIUS server group, including the group name, numbers of servers in the group, and a list of servers in the named server group. A global list of all configured RADIUS servers, along with authentication and accounting port numbers, is also displayed.

Task ID


Task ID	Operations
aaa	read

Examples

The inherited global message is displayed if no group level deadtime is defined for this group; otherwise, the group level deadtime value is displayed and this message is omitted. The following sample output is for the show radius server-groups command:


RP/0/RP0/CPU0:router# show radius server-groups 

Global list of servers
  Contains 2 server(s)
    Server 10.1.1.1/1645/1646 
    Server 10.2.2.2/1645/1646 

Server group 'radgrp1' has 2 server(s)
  Dead time: 0 minute(s) (inherited from global)
  Contains 2 server(s)
    Server 10.1.1.1/1645/1646 
    Server 10.2.2.2/1645/1646 

Server group 'radgrp-priv' has 1 server(s)
  Dead time: 0 minute(s) (inherited from global)
  Contains 1 server(s)
    Server 10.3.3.3/1645/1646 [private]

The following sample output shows the properties for all the server groups in group “radgrp1:”


RP/0/RP0/CPU0:router# show radius server-groups radgrp1 detail 

Server group 'radgrp1' has 2 server(s)
    VRF default (id 0x60000000)
    Dead time: 0 minute(s) (inherited from global)
    Contains 2 server(s)
      Server 10.1.1.1/1645/1646
    Authentication:
      0 requests, 0 pending, 0 retransmits
      0 accepts, 0 rejects, 0 challenges
      0 timeouts, 0 bad responses, 0 bad authenticators
      0 unknown types, 0 dropped, 0 ms latest rtt
    Accounting:
      0 requests, 0 pending, 0 retransmits
      0 responses, 0 timeouts, 0 bad responses
      0 bad authenticators, 0 unknown types, 0 dropped
      0 ms latest rtt
      Server 10.2.2.2/1645/1646
    Authentication:
      0 requests, 0 pending, 0 retransmits
      0 accepts, 0 rejects, 0 challenges
      0 timeouts, 0 bad responses, 0 bad authenticators
      0 unknown types, 0 dropped, 0 ms latest rtt
    Accounting:
      0 requests, 0 pending, 0 retransmits
      0 responses, 0 timeouts, 0 bad responses
      0 bad authenticators, 0 unknown types, 0 dropped
      0 ms latest rtt

The following sample output shows the properties for all the server groups in detail in the group “raddgrp-priv:”


RP/0/RP0/CPU0:router# show radius server-groups radgrp-priv detail 

Server group 'radgrp-priv' has 1 server(s)
    VRF default (id 0x60000000)
    Dead time: 0 minute(s) (inherited from global)
    Contains 1 server(s)
      Server 10.3.3.3/1645/1646 [private]
    Authentication:
      0 requests, 0 pending, 0 retransmits
      0 accepts, 0 rejects, 0 challenges
      0 timeouts, 0 bad responses, 0 bad authenticators
      0 unknown types, 0 dropped, 0 ms latest rtt
    Accounting:
      0 requests, 0 pending, 0 retransmits
      0 responses, 0 timeouts, 0 bad responses
      0 bad authenticators, 0 unknown types, 0 dropped
      0 ms latest rtt

This table describes the significant fields shown in the display.

Table 5. show radius server-groups Field Descriptions
Field	Description
Server	Server IP address/UDP destination port for authentication requests/UDP destination port for accounting requests.

show tacacs

To display information about the TACACS+ servers that are configured in the system, use the show tacacs command in the XR EXEC mode.

show tacacs

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the show tacacs command to display statistics for each configured TACACS+ server.

Task ID


Task ID	Operations
aaa	read

Examples

The following is sample output from the show tacacs command:


RP/0/RP0/CPU0:router# show tacacs

For IPv4 IP addresses:
Server:10.1.1.1/21212 opens=0 closes=0 aborts=0 errors=0
        packets in=0 packets out=0
        status=up single-connect=false

Server:10.2.2.2/21232 opens=0 closes=0 aborts=0 errors=0
        packets in=0 packets out=0
        status=up single-connect=false

For IPv6 IP addresses:
Server: 10.2.3.5/49  family = AF_INET opens=0 closes=0 aborts=0 errors=0
        packets in=0 packets out=0
        status=up single-connect=false

This table describes the significant fields shown in the display.

Table 6. show tacacs Field Descriptions
Field	Description
Server	Server IP address.
opens	Number of socket opens to the external server.
closes	Number of socket closes to the external server.
aborts	Number of tacacs requests that have been terminated midway.
errors	Number of error replies from the external server.
packets in	Number of TCP packets that have been received from the external server.
packets out	Number of TCP packets that have been sent to the external server.

show tacacs server-groups

To display information about the TACACS+ server groups that are configured in the system, use the show tacacs server-groups command in the XR EXEC mode.

show tacacs server-groups

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the show tacacs server-groups command to display information about each configured TACACS+ server group, including the group name, numbers of servers in the group, and a list of servers in the named server group. A global list of all configured TACACS+ servers is also displayed.

Task ID


Task ID	Operations
aaa	read

Examples

The following is sample output from the show tacacs server-groups command:


RP/0/RP0/CPU0:router# show tacacs server-groups

Global list of servers
  Server 192.168.25.61/23456
  Server 192.168.49.12/12345
  Server 192.168.49.12/9000
  Server 192.168.25.61/23432
  Server 10.5.5.5/23456
  Server 10.1.1.1/49
Server group ‘tac100’ has 1 servers
Server 192.168.49.12

This table describes the significant fields shown in the display.

Table 7. show tacacs server-groups Field Descriptions
Field	Description
Server	Server IP address.

show user

To display all user groups and task IDs associated with the currently logged-in user, use the show user command in the XR EXEC mode.

show user [all | authentication | group | tasks]

Syntax Description


all	(Optional) Displays all user groups and task IDs for the currently logged-in user.
authentication	(Optional) Displays authentication method parameters for the currently logged-in user.
group	(Optional) Displays the user groups associated with the currently logged-in user.
tasks	(Optional) Displays task IDs associated with the currently logged-in user. The tasks keyword indicates which task is reserved in the sample output.

Command Default

When the show user command is used without any option, it displays the ID of the user who is logged in currently.

Command Modes

XR EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the show user command to display all user groups and task IDs associated with the currently logged-in user.

Task ID


Task ID	Operations
none	—

Examples

The following sample output displays the authentication method parameters from the show user command:


RP/0/RP0/CPU0:router# show user authentication method

local

The following sample output displays the groups from the show user command:


RP/0/RP0/CPU0:router# show user group 

root-system

The following sample output displays all the information for the groups and tasks from the show user command:


RP/0/RP0/CPU0:router# show user all 
Username: lab
Groups: root-system
Authenticated using method local
User lab has the following Task ID(s):

Task:                  aaa  : READ    WRITE    EXECUTE    DEBUG
Task:                  aaa  : READ    WRITE    EXECUTE    DEBUG
Task:                  acl  : READ    WRITE    EXECUTE    DEBUG
Task:                  admin  : READ    WRITE    EXECUTE    DEBUG
Task:                  atm  : READ    WRITE    EXECUTE    DEBUG
Task:       basic-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 bcdl  : READ    WRITE    EXECUTE    DEBUG
Task:                  bfd  : READ    WRITE    EXECUTE    DEBUG
Task:                  bgp  : READ    WRITE    EXECUTE    DEBUG
Task:                 boot  : READ    WRITE    EXECUTE    DEBUG
Task:               bundle  : READ    WRITE    EXECUTE    DEBUG
Task:                  cdp  : READ    WRITE    EXECUTE    DEBUG
Task:                  cef  : READ    WRITE    EXECUTE    DEBUG
Task:          config-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:      config-services  : READ    WRITE    EXECUTE    DEBUG
Task:               crypto  : READ    WRITE    EXECUTE    DEBUG
Task:                 diag  : READ    WRITE    EXECUTE    DEBUG
Task:                drivers  : READ    WRITE    EXECUTE    DEBUG
Task:           ext-access  : READ    WRITE    EXECUTE    DEBUG
Task:               fabric  : READ    WRITE    EXECUTE    DEBUG
Task:            fault-mgr  : READ    WRITE    EXECUTE    DEBUG
Task:           filesystem  : READ    WRITE    EXECUTE    DEBUG
Task:             firewall  : READ    WRITE    EXECUTE    DEBUG
Task:                   fr  : READ    WRITE    EXECUTE    DEBUG
Task:                 hdlc  : READ    WRITE    EXECUTE    DEBUG
Task:        host-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 hsrp  : READ    WRITE    EXECUTE    DEBUG
Task:            interface  : READ    WRITE    EXECUTE    DEBUG
Task:            inventory  : READ    WRITE    EXECUTE    DEBUG
Task:          ip-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv4  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv6  : READ    WRITE    EXECUTE    DEBUG
Task:                 isis  : READ    WRITE    EXECUTE    DEBUG
Task:              logging  : READ    WRITE    EXECUTE    DEBUG
Task:                 lpts  : READ    WRITE    EXECUTE    DEBUG
Task:              monitor  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-ldp  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-static  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-te  : READ    WRITE    EXECUTE    DEBUG
Task:              multicast  : READ    WRITE    EXECUTE    DEBUG
Task:              netflow  : READ    WRITE    EXECUTE    DEBUG
Task:              network  : READ    WRITE    EXECUTE    DEBUG
Task:                 ospf  : READ    WRITE    EXECUTE    DEBUG
Task:                 ouni  : READ    WRITE    EXECUTE    DEBUG
Task:             pkg-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:                  ppp  : READ    WRITE    EXECUTE    DEBUG
Task:                  qos  : READ    WRITE    EXECUTE    DEBUG
Task:                  rib  : READ    WRITE    EXECUTE    DEBUG
Task:                  rip  : READ    WRITE    EXECUTE    DEBUG
Task:              root-lr  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:          root-system  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:            route-map  : READ    WRITE    EXECUTE    DEBUG
Task:         route-policy  : READ    WRITE    EXECUTE    DEBUG
Task:                  sbc  : READ    WRITE    EXECUTE    DEBUG
Task:                 snmp  : READ    WRITE    EXECUTE    DEBUG
Task:            sonet-sdh  : READ    WRITE    EXECUTE    DEBUG
Task:               static  : READ    WRITE    EXECUTE    DEBUG
Task:               sysmgr  : READ    WRITE    EXECUTE    DEBUG
Task:               system  : READ    WRITE    EXECUTE    DEBUG
Task:            transport  : READ    WRITE    EXECUTE    DEBUG
Task:           tty-access  : READ    WRITE    EXECUTE    DEBUG
Task:               tunnel  : READ    WRITE    EXECUTE    DEBUG
Task:            universal  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:                 vlan  : READ    WRITE    EXECUTE    DEBUG
Task:                 vrrp  : READ    WRITE    EXECUTE    DEBUG

The following sample output displays the tasks and indicates which tasks are reserved from the show user command:


RP/0/RP0/CPU0:router# show user tasks

Task:                  aaa  : READ    WRITE    EXECUTE    DEBUG
Task:                  aaa  : READ    WRITE    EXECUTE    DEBUG
Task:                  acl  : READ    WRITE    EXECUTE    DEBUG
Task:                  admin  : READ    WRITE    EXECUTE    DEBUG
Task:                  atm  : READ    WRITE    EXECUTE    DEBUG
Task:       basic-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 bcdl  : READ    WRITE    EXECUTE    DEBUG
Task:                  bfd  : READ    WRITE    EXECUTE    DEBUG
Task:                  bgp  : READ    WRITE    EXECUTE    DEBUG
Task:                 boot  : READ    WRITE    EXECUTE    DEBUG
Task:               bundle  : READ    WRITE    EXECUTE    DEBUG
Task:                  cdp  : READ    WRITE    EXECUTE    DEBUG
Task:                  cef  : READ    WRITE    EXECUTE    DEBUG
Task:          config-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:      config-services  : READ    WRITE    EXECUTE    DEBUG
Task:               crypto  : READ    WRITE    EXECUTE    DEBUG
Task:                 diag  : READ    WRITE    EXECUTE    DEBUG
Task:                drivers  : READ    WRITE    EXECUTE    DEBUG
Task:           ext-access  : READ    WRITE    EXECUTE    DEBUG
Task:               fabric  : READ    WRITE    EXECUTE    DEBUG
Task:            fault-mgr  : READ    WRITE    EXECUTE    DEBUG
Task:           filesystem  : READ    WRITE    EXECUTE    DEBUG
Task:             firewall  : READ    WRITE    EXECUTE    DEBUG
Task:                   fr  : READ    WRITE    EXECUTE    DEBUG
Task:                 hdlc  : READ    WRITE    EXECUTE    DEBUG
Task:        host-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 hsrp  : READ    WRITE    EXECUTE    DEBUG
Task:            interface  : READ    WRITE    EXECUTE    DEBUG
Task:            inventory  : READ    WRITE    EXECUTE    DEBUG
Task:          ip-services  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv4  : READ    WRITE    EXECUTE    DEBUG
Task:                 ipv6  : READ    WRITE    EXECUTE    DEBUG
Task:                 isis  : READ    WRITE    EXECUTE    DEBUG
Task:              logging  : READ    WRITE    EXECUTE    DEBUG
Task:                 lpts  : READ    WRITE    EXECUTE    DEBUG
Task:              monitor  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-ldp  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-static  : READ    WRITE    EXECUTE    DEBUG
Task:              mpls-te  : READ    WRITE    EXECUTE    DEBUG
Task:              multicast  : READ    WRITE    EXECUTE    DEBUG
Task:              netflow  : READ    WRITE    EXECUTE    DEBUG
Task:              network  : READ    WRITE    EXECUTE    DEBUG
Task:                 ospf  : READ    WRITE    EXECUTE    DEBUG
Task:                 ouni  : READ    WRITE    EXECUTE    DEBUG
Task:             pkg-mgmt  : READ    WRITE    EXECUTE    DEBUG
Task:                  ppp  : READ    WRITE    EXECUTE    DEBUG
Task:                  qos  : READ    WRITE    EXECUTE    DEBUG
Task:                  rib  : READ    WRITE    EXECUTE    DEBUG
Task:                  rip  : READ    WRITE    EXECUTE    DEBUG
Task:              root-lr  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:          root-system  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:            route-map  : READ    WRITE    EXECUTE    DEBUG
Task:         route-policy  : READ    WRITE    EXECUTE    DEBUG
Task:                  sbc  : READ    WRITE    EXECUTE    DEBUG
Task:                 snmp  : READ    WRITE    EXECUTE    DEBUG
Task:            sonet-sdh  : READ    WRITE    EXECUTE    DEBUG
Task:               static  : READ    WRITE    EXECUTE    DEBUG
Task:               sysmgr  : READ    WRITE    EXECUTE    DEBUG
Task:               system  : READ    WRITE    EXECUTE    DEBUG
Task:            transport  : READ    WRITE    EXECUTE    DEBUG
Task:           tty-access  : READ    WRITE    EXECUTE    DEBUG
Task:               tunnel  : READ    WRITE    EXECUTE    DEBUG
Task:            universal  : READ    WRITE    EXECUTE    DEBUG (reserved)
Task:                 vlan  : READ    WRITE    EXECUTE    DEBUG
Task:                 vrrp  : READ    WRITE    EXECUTE    DEBUG

show aaa user-group

To display user group information for AAA sub-system, use the show aaa user-group command in the System Admin EXEC mode. You must have a group aaa-r or root-system on System Admin VM.

show aaa user-group

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

System Admin EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operation
aaa	read

Examples

This is the sample output of the show aaa user-group command:


sysadmin-vm:0_RP0#show aaa user-group	
Mon Nov  3  13:39:33.380 UTC

User group : root-system
sysadmin-vm:0_RP0#

show tech-support aaa

To collect AAA debug and trace files from System Admin VM, use the show tech-support aaa command in the System Admin EXEC mode.

show tech-support aaa

Syntax Description

This command has no keywords or arguments.

Command Default

None

Command Modes

System Admin EXEC mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operation
aaa	read

Examples

This is the sample output of the show tech-support aaa command:


sysadmin-vm:0_RP0#show tech-support aaa	
Mon Nov  3  13:39:33.380 UTC

Fri Oct  24 07:22:15.740 UTC ++ Show tech start time: 2014-Oct-24.072216.UTC ++ 
Waiting for gathering to complete /opt/cisco/calvados/script/show_tech_aaa: line 27: rse: command not found . 
Compressing show tech output
Show tech output available at /misc/disk1//showtech-aaa-admin-2014-Nov-04.082457.UTC.tgz
Please collect show tech-support ctrace in addition to any sysadmin show-tech-support collection
++ Show tech end time: 2014-Nov-04.UTC ++
sysadmin-vm:0_RP0#

single-connection

To multiplex all TACACS+ requests to this server over a single TCP connection, use the single-connection command in TACACS host configuration mode. To disable the single TCP connection for all new sessions that use a separate connection, use the no form of this command.

single-connection

no single-connection

Syntax Description

This command has no keywords or arguments.

Command Default

By default, a separate connection is used for each session.

Command Modes

TACACS host configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The single-connection command allows the TACACS+ server to handle a greater number of TACACS operations than would be possible if multiple TCP connections were used to send requests to a server.

The TACACS+ server that is being used must support single-connection mode for this to be effective; otherwise, the connection between the network access server and the TACACS+ server locks up or you can receive unauthentic errors.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to configure a single TCP connection to be made with the TACACS+ server (IP address 209.165.200.226) and all authentication, authorization, accounting requests to use this TCP connection. This works only if the TACACS+ server is also configured in single-connection mode. To configure the TACACS+ server in single connection mode, refer to the respective server manual.


RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226 
RP/0/RP0/CPU0:router(config-tacacs-host)# single-connection

single-connection-idle-timeout

To set the idle timeout value for the single TCP connection to the TACACS+ server, use the single-connection-idle-timeout command in tacacs-server host configuration mode. To remove the configuration or to disable the idle timeout for the single connection, use the no form of this command.

single-connection-idle-timeout time-in-seconds

Syntax Description


`time-in-seconds`	Specifies the single connection timeout value, in seconds. The range is: 500 to 7200 (prior to Cisco IOS XR Software Release 7.3.2/Release 7.4.1) 5 to 7200 (from Cisco IOS XR Software Release 7.3.2/Release 7.4.1, and later)

Command Default

Single connection idle timeout is not set, by default.

Command Modes

tacacs-server host

Command History


Release	Modification
Release 7.3.2 Release 7.4.1	This command was modified to change the timeout range.
Release 6.6.3	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to set an idle timeout value of 60 seconds for the single TCP connections to the TACACS+ server:


RP/0/RP0/CPU0:router(config)#tacacs-server host 209.165.200.226 
RP/0/RP0/CPU0:router(config-tacacs-host)#single-connection-idle-timeout 60
RP/0/RP0/CPU0:router(config-tacacs-host)#commit

Related Commands


Command	Description
single-connection	Multiplexes all TACACS+ requests to the server over a single TCP connection.

tacacs-server host

To specify a TACACS+ host server, use the tacacs-server host command in XR Config mode. To delete the specified name or address, use the no form of this command.

tacacs-server host host-name [ holddown-time time ] [ port port-number ] [ timeout seconds ] [ key [ 0 | 7 ] auth-key ] [single-connection] [ single-connection-idle-timeout time-in-seconds ]

no tacacs-server host host-name [port port-number]

Syntax Description


`host-name`	Host or domain name or IP address of the TACACS+ server.
holddown-time `time`	Specifies a duration, in seconds, for which an unresponsive TACACS+ server is to be marked as DOWN. The range is from 0 to 1200. Zero indicates that the hold-down timer feature is disabled.
port `port-number`	(Optional) Specifies a server port number. This option overrides the default, which is port 49. Valid port numbers range from 1 to 65535.
timeout `seconds`	(Optional) Specifies a timeout value that sets the length of time the authentication, authorization, and accounting (AAA) server waits to receive a response from the TACACS+ server. This option overrides the global timeout value set with the tacacs-server timeout command for this server only. The valid timeout range is from 1 to 1000 seconds. Default is 5. Note: You can use this parameter only in the config-tacacs-host sub-mode.
key [0 \| 7] `auth-key`	(Optional) Specifies an authentication and encryption key shared between the AAA server and the TACACS+ server. The TACACS+ packets are encrypted using this key. This key must match the key used by the TACACS+ daemon. Specifying this key overrides the key set by the tacacs-server key command for this server only. (Optional) Entering 0 specifies that an unencrypted (clear-text) key follows. (Optional) Entering 7 specifies that an encrypted key follows. The `auth-key` argument specifies the unencrypted key between the AAA server and the TACACS+ server. Note: You can use this parameter only in the config-tacacs-host sub-mode.
single-connection	(Optional) Multiplexes all TACACS+ requests to this server over a single TCP connection. By default, a separate connection is used for each session. Note: You can use this parameter only in the config-tacacs-host sub-mode.
single-connection-idle-timeout `time-in-seconds`	(Optional) Specifies the single connection idle timeout value, in seconds. The range is: 500 to 7200 (prior to Cisco IOS XR Software Release 7.3.2/Release 7.4.1) 5 to 7200 (from Cisco IOS XR Software Release 7.3.2/Release 7.4.1, and later)

Command Default

No TACACS+ host is specified.

The port-name argument, if not specified, defaults to the standard port 49.

The seconds argument, if not specified, defaults to 5 seconds.

Single connection idle timeout is not set, by default.

Command Modes

XR Config mode

Command History


Release	Modification
Release 7.4.1	This command was modified to include holddown-time option.
Release 7.3.2 Release 7.4.1	This command was modified to change the range for single-connection-idle-timeout .
Release 6.6.3	This command was modified to include single-connection-idle-timeout option.
Release 6.0	This command was introduced.

Usage Guidelines

You can use multiple tacacs-server host commands to specify additional hosts. Cisco IOS XR software searches for hosts in the order in which you specify them.

For details on TACACS+ hold-down timer, see the holddown-time command.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to specify a TACACS+ host with the IP address 209.165.200.226:


RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226
RP/0/RP0/CPU0:router(config-tacacs-host)#

The following example shows that the default values from the tacacs-server host command are displayed from the show run command:


RP/0/RP0/CPU0:router# show run

Building configuration...
!! Last configuration change at 13:51:56 UTC Mon Nov 14 2005 by lab
!
tacacs-server host 209.165.200.226 port 49
 timeout 5
!

The following example shows how to specify that the router consult the TACACS+ server host named host1 on port number 51. The timeout value for requests on this connection is 30 seconds; the encryption key is a_secret.


RP/0/RP0/CPU0:router(config)# tacacs-server host host1 port 51
RP/0/RP0/CPU0:router(config-tacacs-host)# timeout 30
RP/0/RP0/CPU0:router(config-tacacs-host)# key a_secret

Related Commands

Command	Description
holddown-time (TACACS+)	Specifies a duration for which an unresponsive TACACS+ server is to be marked as down.
key (TACACS+)
single-connection
single-connection-idle-timeout	Sets the idle timeout value for the single TCP connection to the TACACS+ server.
timeout (TACACS+)

tacacs-server key

To set the authentication encryption key used for all TACACS+ communications between the router and the TACACS+ daemon, use the tacacs-server key command in XR Config mode. To disable the key, use the no form of this command.

tacacs-server key {0 clear-text-key | 7 encrypted-key | auth-key}

no tacacs-server key {0 clear-text-key | 7 encrypted-key | auth-key}

Syntax Description


0 `clear-text-key`	Specifies an unencrypted (cleartext) shared key.
7 `encrypted-key`	Specifies an encrypted shared key.
`auth-key`	Specifies the unencrypted key between the AAA server and the TACACS+ server.

Command Default

None

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The key name entered must match the key used on the TACACS+ daemon. The key name applies to all servers that have no individual keys specified. All leading spaces are ignored; spaces within and after the key are not. If you use spaces in your key, do not enclose the key in quotation marks unless the quotation marks themselves are part of the key.

The key name is valid only when the following guidelines are followed:

The clear-text-key argument must be followed by the 0 keyword.
The encrypted-key argument must be followed by the 7 keyword.

The TACACS server key is used only if no key is configured for an individual TACACS server. Keys configured for an individual TACACS server always override this global key configuration.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example sets the authentication and encryption key to key1:

 RP/0/RP0/CPU0:router(config)# tacacs-server key key1

tacacs-server timeout

To set the interval that the server waits for a server host to reply, use the tacacs-server timeout command in XR Config mode. To restore the default, use the no form of this command.

tacacs-server timeout seconds

no tacacs-server timeout seconds

Syntax Description


`seconds`	Integer that specifies the timeout interval (in seconds) from 1 to 1000.

Command Default

5 seconds

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The TACACS+ server timeout is used only if no timeout is configured for an individual TACACS+ server. Timeout intervals configured for an individual TACACS+ server always override this global timeout configuration.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows the interval timer being changed to 10 seconds:


RP/0/RP0/CPU0:router(config)# tacacs-server timeout 10

tacacs-server ipv4

To set the Differentiated Services Code Point (DSCP), which is represented by the first six bits in the Type of Service (ToS) byte of the IP header, use the tacacs-server ipv4 command in XR Config mode.

tacacs-server ipv4 dscp dscp-value

Syntax Description


ipv4	Specifies the dscp bit for the IPv4 packets.
dscp	Sets the DSCP in the IP header.
`dscp-value`	Specifies the options for setting the value of DSCP. The available options are: <0-63> Differentiated services codepoint value af11 Match packets with AF11 dscp (001010) af12 Match packets with AF12 dscp (001100) af13 Match packets with AF13 dscp (001110) af21 Match packets with AF21 dscp (010010) af22 Match packets with AF22 dscp (010100) af23 Match packets with AF23 dscp (010110) af31 Match packets with AF31 dscp (011010) af32 Match packets with AF32 dscp (011100) af33 Match packets with AF33 dscp (011110) af41 Match packets with AF41 dscp (100010) af42 Match packets with AF42 dscp (100100) af43 Match packets with AF43 dscp (100110) cs1 Match packets with CS1(precedence 1) dscp (001000) cs2 Match packets with CS2(precedence 2) dscp (010000) cs3 Match packets with CS3(precedence 3) dscp (011000) cs4 Match packets with CS4(precedence 4) dscp (100000) cs5 Match packets with CS5(precedence 5) dscp (101000) cs6 Match packets with CS6(precedence 6) dscp (110000) cs7 Match packets with CS7(precedence 7) dscp (111000) default Match packets with default dscp (000000) ef Match packets with EF dscp (101110)

Command Default

None

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

No specific guidelines impact the use of this command.

Task ID


Task ID	Operation
aaa	read, write

Examples

The following example sets the DSCP value to Assured Forwarding (AF)11:

RP/0/RP0/CPU0:router(config)# tacacs-server ipv4 dscp af11

tacacs source-interface

To specify the source IP address of a selected interface for all outgoing TACACS+ packets, use the tacacs source-interface command in XR Config mode. To disable use of the specified interface IP address, use the no form of this command.

tacacs source-interface type path-id [vrf vrf-id]

no tacacs source-interface type path-id

Syntax Description

type

Interface type. For more information, use the question mark (?) online help function.

path-id

Physical interface or virtual interface.

Note

Use the show interfaces command in XR Config mode to see a list of all interfaces currently configured on the router.

For more information about the syntax for the router, use the question mark (? ) online help function.

vrf vrf-id

Specifies the name of the assigned VRF.

Command Default

If a specific source interface is not configured, or the interface is down or does not have an IP address configured, the system selects an IP address.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the tacacs source-interface command to set the IP address of the specified interface for all outgoing TACACS+ packets. This address is used as long as the interface is in the up state. In this way, the TACACS+ server can use one IP address entry associated with the network access client instead of maintaining a list of all IP addresses.

This command is especially useful in cases where the router has many interfaces and you want to ensure that all TACACS+ packets from a particular router have the same IP address.

When the specified interface does not have an IP address or is in a down state, TACACS+ behaves as if no source interface configuration is used.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to set the IP address of the specified interface for all outgoing TACACS+ packets:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# tacacs source-interface HundredGigabitEthernet 0/0/0/29 vrf abc

task

To add a task ID to a task group, use the task command in task group configuration mode. To remove a task ID from a task group, use the no form of this command.

task {read | write | execute | debug} taskid-name

no task {read | write | execute | debug} taskid-name

Syntax Description


read	Enables read-only privileges for the named task ID.
write	Enables write privileges for the named task ID. The term “write” implies read also.
execute	Enables execute privileges for the named task ID.
debug	Enables debug privileges for the named task ID.
`taskid-name`	Name of the task ID.

Command Default

No task IDs are assigned to a newly created task group.

Command Modes

Task group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the task command in task group configuration mode. To access task group configuration mode, use the taskgroup command in global configuration mode.

Task IDs are the base of command authorization. Only users who have the required permissions can execute a particular command on the router. To execute a command, the user must be part of a user group that consists of task group(s) that includes required task IDs and privileges. Cisco IOS XR software supports multiple task IDs. For example, aaa , config-services , crypto , system , and so on. To see the list of task IDs available for the user, use the show user tasks command.

Likewise, all commands are associated with one or more task IDs, and their corresponding operations (such as read , write , execute , and debug ) that denote the permissions required to execute those commands. You can use the describe command to know the task ID and permissions that are required to execute a particular command.

For example, the following output shows that the user needs aaa task ID with read and write permission to execute the show run aaa command. So, users can execute this command if they belong to a user group associated with a task group that includes this aaa task ID having read and write privileges.


Router# describe show run aaa
The command is defined in aaa_cmds.parser

User needs ALL of the following taskids:

    aaa (READ WRITE) ----------->

It will take the following actions:
Wed Mar 16 07:58:01.451 UTC
  Spawn the process:
    nvgen "-c" "-q" "gl/aaa/" 
Router#

Root users (users in root-lr or root-system user group) have all task IDs, and hence will be able to execute all commands. Also, certain commands might not require any task ID as such to execute it. So, all users will have permission to execute such commands. If you do not have the required permission to execute a command, the command authorization fails. If the user group assignment is preventing you from using any command, contact your AAA administrator for assistance.

A few other examples that describe the commands to list the task ID:


Router#describe show interfaces 
The command is defined in show_interface.parser

show_interface.parser
User needs ALL of the following taskids:

   interface (READ)----------> 

It will take the following actions:
Thu Mar 17 06:42:08.264 UTC
  Spawn the process:
    show_interface "-a" 
Router#


Router(config)#describe ssh server 
The command is defined in ssh.parser

ssh.parser
User needs ALL of the following taskids:

   crypto (READ WRITE) ---------->

It will take the following actions:
  Create/Set the configuration item:
       Path: gl/crypto/ssh/server/sshd/vrf/default
       Value: packed[ 0x1 <string> <string> ]
Router(config)#

For more details, see Configuring AAA Services chapter in the System Security Configuration Guide for Cisco NCS 5500 Series Routers.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to enable execute privileges for the config-services task ID and associate that task ID with the task group named taskgroup1:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# taskgroup taskgroup1 
RP/0/RP0/CPU0:router(config-tg)# task execute config-services

taskgroup

To configure a task group to be associated with a set of task IDs, and to enter task group configuration mode, use the taskgroup command in XR Config mode. To delete a task group, use the no form of this command.

taskgroup taskgroup-name [description string | task {read | write | execute | debug} taskid-name | inherit taskgroup taskgroup-name]

no taskgroup taskgroup-name

Syntax Description


`taskgroup-name`	Name of a particular task group.
description	(Optional) Enables you to create a description for the named task group.
`string`	(Optional) Character string used for the task group description.
task	(Optional) Specifies that a task ID is to be associated with the named task group.
read	(Optional) Specifies that the named task ID permits read access only.
write	(Optional) Specifies that the named task ID permits read and write access only.
execute	(Optional) Specifies that the named task ID permits execute access.
debug	(Optional) Specifies that the named task ID permits debug access only.
`taskid-name`	(Optional) Name of a task: the task ID.
inherit taskgroup	(Optional) Copies permissions from the named task group.
`taskgroup-name`	(Optional) Name of the task group from which permissions are to be inherited.

Command Default

Five predefined user groups are available by default.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Task groups are configured with a set of task IDs for each action type. Deleting a task group that is still referenced in the system results in a warning and rejection of the deletion. For more details on task IDs, see the Usage Guidelines section of the task command.

You can use the show user group command in XR Config mode to know the group(s) that the current user is part of. Similarly, you can use the show user all to know the group or task information (such as username, groups, authentication method, task IDs, and so on) of the current user.

From global configuration mode, you can display all the configured task groups. However, you cannot display all the configured task groups in taskgroup configuration mode.

Entering the taskgroup command with no keywords or arguments enters task group configuration mode, in which you can use the description , inherit , show , and task commands.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example assigns read bgp permission to the task group named alpha:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# taskgroup alpha 
RP/0/RP0/CPU0:router(config-tg)# task read bgp

timeout (TACACS+)

To specify a timeout value that sets the length of time the authentication, authorization, and accounting (AAA) server waits to receive a response from the TACACS+ server, use the timeout (TACACS+) command in TACACS host configuration mode. To disable this command and return to the default timeout value of 5 seconds, use the no form of this command.

timeout seconds

no timeout seconds

Syntax Description


`seconds`	Timeout value (in seconds). The range is from 1 to 1000. If no timeout is specified, the global value is used.

Command Default

seconds: 5

Command Modes

TACACS host configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

The timeout (TACACS+) command overrides the global timeout value set with the tacacs-server timeout command for this server only.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to set the number of seconds for the timeout value:


RP/0/RP0/CPU0:router(config)# tacacs-server host 209.165.200.226
RP/0/RP0/CPU0:router(config-tacacs-host)# timeout 500

timeout login response

To set the interval that the server waits for a reply to a login, use the timeout login response command in line template configuration mode. To restore the default, use the no form of this command.

timeout login response seconds

no timeout login response seconds

Syntax Description


`seconds`	Integer that specifies the timeout interval (in seconds) from 0 to 300.

Command Default

seconds: 30

Command Modes

Line template configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the timeout login response command in line template configuration mode to set the timeout value. This timeout value applies to all terminal lines to which the entered line template is applied. This timeout value cannot be applied to line console. After the timeout value has expired, the user is prompted again. The retry is allowed three times.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to change the interval timer to 20 seconds:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# line template alpha 
RP/0/RP0/CPU0:router(config-line)# timeout login response 20

usergroup

To configure a user group and associate it with a set of task groups, and to enter user group configuration mode, use the usergroup command in XR Config mode. To delete a user group, or to delete a task-group association with the specified user group, use the no form of this command.

usergroup usergroup-name

no usergroup usergroup-name

Syntax Description


`usergroup-name`	Name of the user group. The `usergroup-name` argument can be only one word. Spaces and quotation marks are not allowed.

Command Default

Five predefined user groups are available by default.

Command Modes

XR Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

User groups are configured with the command parameters for a set of users, such as task groups. You can remove specific user groups by using the no form of the usergroup command. You can remove the user group itself by using the no form of the command without giving any parameters. Deleting a user group that is still referenced in the system results in a warning and a rejection of the deletion.

Use the inherit usergroup command to copy permissions from other user groups. The user group is inherited by the parent group and forms a union of all task IDs specified in those groups. Circular inclusions are detected and rejected. User groups cannot inherit properties from predefined groups, such as root-system and owner-sdr.

From global configuration mode, you can display all the configured user groups. However, you cannot display all the configured user groups in usergroup configuration mode.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to add permissions from the user group beta to the user group alpha:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# usergroup alpha 
RP/0/RP0/CPU0:router(config-ug)# inherit usergroup beta

username

To configure a new user with a username, establish a password, associate a password policy with the user, grant permissions for the user, and to enter username configuration mode, use the username command in XR Config mode or Admin Configuration modeSystem Admin Config mode. To delete a user from the database, use the no form of this command.

username name [ group name | policy name | [ password-policy name ] { password | masked-password } [ type ] password | { secret | masked-secret } [ type | 0 [ enc-type type ] secret ] ]

Syntax Description


`name`	Name of the user. The `name` argument can be only one word. Spaces and quotation marks are not allowed. The allowed range for a user-defined username is 2-253 characters.
group `name`	Enables a user to be associated with a user group, as defined with the usergroup command.
policy `name`	Configures a password policy that is common to user password and secret.
password-policy `name`	(Optional) Specifies the password policy for cleartext and Type 7 password authentication.
password	Enables a password to be created for the specified user.
masked-password	Enables a password to be created for the specified user. When you key in the password, it is not visible on the screen.
`type password`	Specifies the password type and the password to be keyed in. Enter 0 or 7 for the type argument. 0 specifies a cleartext password, and 7 specifies a Type 7 encrypted password. If Type 7 encryption is enabled with the password keyword, the password is not visible to the user. The password can be up to 253 characters in length. (Optional) type argument
secret	Enables a secret to be created for the specified user.
masked-secret	Enables a secret to be created for the specified user. When you key in the secret, it is not visible on the screen.
`type secret`	Specifies the secret type and the secret to be keyed in. Enter 0, or enter 5, 8, 9, or 10, for the type argument. Details: 0 specifies a cleartext secret that will be encrypted for use. 5 specifies a Type 5 password that uses MD5 hashing algorithm. 8 specifies a Type 8 password that uses SHA256 hashing algorithm. 9 specifies a Type 9 password that uses scrypthashing algorithm. 10 specifies a Type 10 password that uses SHA512 hashing algorithm. (Optional) type argument.
0 enc-type `type secret`	Specifies that you enter a cleartext secret to be encrypted by a specified encryption method. 0 specifies that you should enter a cleartext secret. enc-type specifies that you enter 5, 8, 9, or 10, for the `type` argument. Enter the cleartext secret for the `secret` argument. (Optional) enc-type `type` keyword-argument combination.

Command Default

No usernames are defined in the system.

Command Modes

XR Config mode

Admin Configuration modeSystem Admin Config mode

Command History


Release	Modification
Release 6.0	This command was introduced.
Release 7.0.1	Added the support for Type 8 (SHA256), Type 9 (scrypt) and Type 10 (SHA512) for secret configuration.
Release 7.2.1	Added the support for policy option to configure policy common to user password and secret.
Release 7.3.1	Password Masking feature options (masked-password and masked-secret ) were added. When you key in a password or secret, it is not displayed on the screen

Usage Guidelines

Note

A user is never allowed to have cisco-support privileges as the only group.
From Release 7.0.1 and later, Type 10 (SHA512) is applied as the default type for the secret configuration. Prior to this, Type 5 (MD5) was the default one.

Use the username command to identify the user and enter username configuration mode. Password and user group assignments can be made from either XR Config mode or username configuration submode. Permissions (task IDs) are assigned by associating the user with one or more defined user groups.

From XR Config mode, you can display all the configured usernames. You can display configured usernames in configuration mode by router(config): do show run username .

Each user is identified by a username that is unique across the administrative domain. Each user should be made a member of at least one user group. Deleting a user group may orphan the users associated with that group. The AAA server authenticates orphaned users, but most commands are not authorized.

The username command is associated with a particular user for local login authentication by default. Alternatively, a user and password can be configured in the database of the TACACS+ server for TACACS+ login authentication. For more information, see the description of the aaa authentication (XR-VM) command.

The predefined group root-system may be specified only by root-system users while administration is configured.

Note

To enable the local networking device to respond to remote Challenge Handshake Authentication Protocol (CHAP) challenges, one username command entry must be the same as the hostname entry that has already been assigned to the other networking device.

The following are password masking guidelines for various command forms:

username name password type password

username name masked-password type password

Enter 0 or 7 for the type argument. 0 specifies a cleartext password, and 7 specifies a Type 7 encrypted password.
secret type secret

masked-secret type secret

Enter 0, or enter 5, 8, 9, or 10, for the type argument. 0 specifies a cleartext secret, and 5, 8, 9, and 10 specify a Type 5, Type 8, Type 9, and Type 10 secret, respectively.
secret 0 enc-type type secret

masked-secret 0 enc-type type secret

Enter 5, 8, 9, or 10, for the type argument.
masked-password type password

masked-secret type secret

After specifying the password encryption type, press Enter or return on your keyboard. The password/secret option appears in the next line. Example:
```
Router(config)# masked-secret 10

Enter secret: 
Re-enter secret:
```

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows the commands available after executing the username command:


RP/0/RP0/CPU0:router# config 
RP/0/RP0/CPU0:router(config)# username user1  
RP/0/RP0/CPU0:router(config-un)# ?


clear	Clear the uncommitted configuration
commit	Commit the configuration changes to running
describe	Describe a command without taking real actions
do	Run an exec command
exit	Exit from this submode
group	User group in which this user will be a member of
no	Negate a command or set its defaults
password	Specify the password for the user
policy	Specify the policy common to password and secret for the user
pwd	Commands used to reach current submode
root	Exit to the XR Config mode
secret	Specify the secure password for the user
show	Show contents of configuration


RP/0/RP0/CPU0:router(config-un)#

The following example shows how to establish the clear-text password password1 for the user name user1 :


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# username user1  
RP/0/RP0/CPU0:router(config-un)# password 0 password1

This example shows how to apply a password policy for the user secret:


Router#configure
Router(config)#username user1
Router(config-un)#policy test-policy1
Router(config-un)#secret 10 $6$dmwuW0Ajicf98W0.$y/vzynWF1/OcGxwBwHs79VAy5ZZLhoHd7TicR4mOo8IIVriYCGAKW0A.w1JvTPO7IbZry.DxHrE3SN2BBzBJe0
Router(config-un)#commit

The following example shows how to configure a Type 8 (SHA256) password for the user, user8 . You can also see the examples and usage of the secret command.

You can specify Type as '8' under the secret keyword, to explicitly configure Type 8 password.


Router#configure
Router(config)#username user8 secret 8 $8$ZYKGl1dZIw73Dl$IUWJOqTLoMyExhsNKoL5vMtvCOYguM5ajXf4uGeQj6I
Router(config-un)#commit

This example shows how to configure Type 9 password:


Router#configure
Router(config)#username user9 secret 9 $9$/rIQL1B3rplRBL$oS2fLWKFYH6B/kApxkkXmIqbPAHpRZkPEoh3WqGbvwQ
Router(config-un)#commit

Similarly, this example shows how to configure Type 10 password :


Router#configure
Router(config)#username user10 secret 10 $6$9UvJidvsTEqgkAPU$3CL1Ei/F.E4v/Hi.UaqLwX8UsSEr9ApG6c5pzhMJmZtgW4jObAQ7meAwyhu5VM/aRFJqe/jxZG17h6xPrvJWf1
Router(config-un)#commit

This example shows how to specify the Type 10 password in System Admin VM:


Router#admin
sysadmin-vm:0_RP0# configure
sysadmin-vm:0_RP0(config)# aaa authentication users user user10 password testpassword
sysadmin-vm:0_RP0(config)# commit

Password Masking Examples

The following example shows how to enable password masking for a cleartext password entry:

In this example, for user us3, a cleartext password is entered.

Router(config)# username us3 masked-password 0


Enter password: 
Re-enter password: 

Router(config)#commit

In the show command output, you can see the encrypted password:

Router# show run aaa
..

username us3
 password 7 105A1D0D

The encrypted password 105A1D0D is entered in the Enter password: and Re-enter password: fields, for Type 7 password encryption:

Router(config)# username us3 masked-password 7

Enter password: 
Re-enter password: 


Router(config)#commit

If there is a password mismatch between the two entries, an error message is displayed.

The following example shows how to enable password masking for a AAA password policy:

In this example, for user us6, a cleartext password is entered.

Router(config)# aaa password-policy security 
Router(config)# username us6 password-policy security masked-password 0 

Enter password: 
Re-enter password: 

Router(config)#commit

In the show command output, you can see the encrypted password.

Router# show run aaa
..

aaa password-policy security 
..
username us6
 password-policy security password 7 0835585A

The encrypted password 0835585A is entered in the Enter password: and Re-enter password: fields for Type 7 password encryption.

Router(config)# username us6 password-policy test-policy masked-password 7

Enter password: 
Re-enter password: 


Router(config)#commit

users group

To associate a user group and its privileges with a line, use the users group command in line template configuration mode. To delete a user group association with a line, use the no form of this command.

users group {usergroup-name | cisco-support | maintenance | netadmin | operator | provisioning | retrieve | root-lr | serviceadmin | sysadmin}

no users group {usergroup-name | cisco-support | maintenance | netadmin | operator | provisioning | retrieve | root-lr | serviceadmin | sysadmin}

Syntax Description


`usergroup-name`	Name of the user group. The `usergroup-name` argument can be only one word. Spaces and quotation marks are not allowed.
cisco-support	Specifies that users logging in through the line are given Cisco support personnel privileges.
maintenance	Specifies that users logging in through the line are given SCAPA maintenance privileges.
netadmin	Specifies that users logging in through the line are given network administrator privileges.
operator	Specifies that users logging in through the line are given operator privileges.
provisioning	Specifies that users logging in through the line are given SCAPA provisioning privileges.
retrieve	Specifies that users logging in through the line are given SCAPA retrieve privileges.
root-lr	Specifies that users logging in through the line are given root logical router (LR) privileges.
serviceadmin	Specifies that users logging in through the line are given service administrator group privileges.
sysadmin	Specifies that users logging in through the line are given system administrator privileges.

Command Default

None

Command Modes

Line template configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the users group command to enable a user group and its privileges to be associated with a line, meaning that users logging in through the line are given the privileges of the particular user group.

Task ID


Task ID	Operations
aaa	read, write

Examples

In the following example, if a vty-pool is created with line template vty, users logging in through vty are given operator privileges:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa authen login vty-authen line 
RP/0/RP0/CPU0:router(config)# commit 
RP/0/RP0/CPU0:router(config)# line template vty 
RP/0/RP0/CPU0:router(config-line)# users group operator 
RP/0/RP0/CPU0:router(config-line)# login authentication

vrf (RADIUS)

To configure the Virtual Private Network (VPN) routing and forwarding (VRF) reference of an AAA RADIUS server group, use the vrf command in RADIUS server-group configuration mode. To enable server groups to use the global (default) routing table, use the no form of this command.

vrf vrf-name

no vrf vrf-name

Syntax Description


`vrf-name`	Name assigned to a VRF.

Command Default

The default VRF is used.

Command Modes

RADIUS server-group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the vrf command to specify a VRF for an AAA RADIUS server group and enable dial-up users to use AAA servers in different routing domains.

Task ID


Task ID	Operations
aaa	read, write

Examples

The following example shows how to use the vrf command:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server radius group1 
RP/0/RP0/CPU0:router(config-sg-radius)# vrf vrf1

vrf (TACACS+)

To configure the Virtual Private Network (VPN) routing and forwarding (VRF) reference of an AAA TACACS+ server group, use the vrf command in TACACS+ server-group configuration mode. To enable server groups to use the global (default) routing table, use the no form of this command.

vrf vrf-name

no vrf vrf-name

Syntax Description


`vrf-name`	Name assigned to a VRF.

Command Default

The default VRF is used.

Command Modes

TACACS+ server-group configuration

Command History


Release	Modification
Release 6.0	This command was introduced.

Usage Guidelines

Use the vrf command to specify a VRF for an AAA TACACS+ server group and enable dial-up users to use AAA servers in different routing domains.

Task ID


Task ID	Operations
aaa	read, write

Examples

This example shows how to use the vrf command:


RP/0/RP0/CPU0:router# configure 
RP/0/RP0/CPU0:router(config)# aaa group server tacacs+ myserver 
RP/0/RP0/CPU0:router(config-sg-tacacs+)# server 9.27.10.6
RP/0/RP0/CPU0:router(config-sg-tacacs+)# vrf abc

Bias-Free Language

Results

Chapter: Authentication, Authorization, and Accounting Commands

Authentication, Authorization, and Accounting Commands

aaa accounting

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa accounting system default

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa accounting update

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa authentication (XR-VM)

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa authorization (XR-VM)

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa authorization (System Admin-VM)

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Examples

aaa default-taskgroup

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa enable-cert-authentication

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa group server radius

Syntax Description

Command Default

Command Modes

Command History

Usage Guidelines

Task ID

Examples

aaa group server tacacs+

Syntax Description

Command Default

Command Modes