- Introduction
- cef table consistency-check through clear pxf
- ip cache-invalidate-delay through monitor event-trace cef ipv6 (global)
- show adjacency through show ip cef with source
- show ip mds forwarding through show monitor event-trace merged-list
- show pxf accounting through test cef table consistency
- cef table consistency-check
- cef table download
- cef table output-chain build
- cef table rate-monitor-period
- clear adjacency
- clear adjacency epoch
- clear cef interface
- clear cef linecard
- clear cef load-balance statistics
- clear cef table
- clear ip cache
- clear ip cef epoch
- clear ip cef epoch full
- clear ip cef event-log
- clear ip cef inconsistency
- clear ip cef prefix-statistics
- clear ip mds
- clear ip mds forwarding
- clear ip mds linecard
- clear ip traffic
- clear mls cef ip accounting per-prefix
- clear pxf
IP Switching Commands
cef table consistency-check
To enable Cisco Express Forwarding table consistency checker types and parameters, use the cef table consistency-check command in global configuration mode. To disable consistency checkers, use the no form of this command.
cef table consistency-check {ipv4 | ipv6} [type {lc-detect | scan-lc-rp | scan-rp-lc | scan-rib-ios | scan-ios-rib} [count count-number [period seconds] | period seconds] | error-message | auto-repair [delay seconds [holddown seconds] | holddown seconds] | data-checking]
no cef table consistency-check {ipv4 | ipv6} [type {lc-detect | scan-lc-rp | scan-rp-lc | scan-rib-ios | scan-ios-rib} [count count-number [period seconds] | period seconds] | error-message | auto-repair | data-checking]
Syntax Description
Command Default
All consistency checkers are disabled.
Command Modes
Global configuration (config)
Command History
Examples
The following example enables the Cisco Express Forwarding consistency checker to check IPv4 addresses:
Router(config)# cef table consistency-check ipv4
The following example enables the Cisco Express Forwarding consistency checker to check IPv4 addresses and specifies the scan-rp-lc checker to run every 60 seconds for 5000 prefixes:
Router(config)# cef table consistency-check ipv4 type scan-rp-lc count 5000 period 60
The following example enables the Cisco Express Forwarding consistency checker to check IPv4 addresses and display an error message when it finds an inconsistency:
Router(config)# cef table consistency-check ipv4 error-message
Related Commands
cef table download
To set download characteristics for prefixes or routes in the Cisco Express Forwarding table, use the cef table download command in global configuration mode. To return to the default download characteristics, use the no form of this command.
cef table download {catch-all | connected-route | default-route | receive-route | recursive-dependents | route-in-vrf} priority priority-number
no cef table download {catch-all | connected-route | default-route | receive-route | recursive-dependents | route-in-vrf} priority priority-number
Syntax Description
Command Default
The default download characteristics apply to routes and prefixes downloaded from the Route Processor (RP) to the line cards.
Command Modes
Global configuration (config)
Command History
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12.2(33)SRE |
This command was introduced. |
Usage Guidelines
Use this command to change the priority of how prefixes and routes in the Cisco Express Forwarding table are downloaded from the RP to the line cards.
Default download priorities are set up to improve convergence when topology changes occur in networks of distributed platform, such as the Cisco 7600 series routers and the Cisco Catalyst 6000 series switches.
Prefixes and routes are categorized and downloaded at four different priorities. Table 1 lists the download priority and the associated prefix or route type.
In a typical network, a small number of IGP prefixes have many iBGP prefixes recursing through them. When an IGP topology change occurs, the key to updating the forwarding of the iBGP prefixes is to update the IGP prefix through which they recurse. If these prefixes with recursing dependents are downloaded before other prefixes, convergence will be faster. Therefore, the default priority for routes with recursive dependents is P1.
Prioritizing the download of directly connected prefixes and their associated local interface address allows for faster and more deterministic failure detection when an interface goes down. In addition, traffic is received at the local interface addresses as soon as possible, which allows for faster Layer 3 protocol convergence. The default priority for directly connected and receive routes is set at P2.
VRF routes over global table routes or Internet routes have a default priority of P3, and all other routes are prioritized at P4.
The cef table download command allows you to override a default priority so you can customize prefix and route downloads from the RP to the line cards. To display the configured download priority, use the show cef table download priority command.
Examples
The following example shows how to change the download priority of the default route from P1 to P2:
Router(config)# cef table download default-route priority 2
Related Commands
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show cef table download priority |
Displays the configured download priority of Cisco Express Forwarding routes. |
cef table output-chain build
To configure characteristics for Cisco Express Forwarding table output chain building for the forwarding of packets through the network, use the cef table output-chain build command in global configuration mode. To disable Cisco Express Forwarding table output chain-building characteristics, use the no form of this command. To restore the general Cisco Express Forwarding table output chain-building characteristics to their default values, use either the default form of this command.
General Characteristics
cef table output-chain build favor {convergence-speed | memory-utilization}
no cef table output-chain build favor
default cef table output-chain build favor
Individual Overrides
cef table output-chain build {indirection [non-recursive-prefix] [recursive-prefix] | inplace-modify [load-sharing] [push-counter]}
no cef table output-chain build {indirection [non-recursive-prefix] [recursive-prefix] | inplace-modify [load-sharing] [push-counter]}
default cef table output-chain build {indirection [non-recursive-prefix] [recursive-prefix] | inplace-modify [load-sharing] [push-counter]}
Syntax Description
Command Default
Convergence speed and indirection characteristics are enabled by default for the building of Cisco Express Forwarding table output chains.
Command Modes
Global configuration (config)
Command History
Usage Guidelines
General Characteristics
Use the cef table output-chain build favor command to override the Cisco Express Forwarding table default operational behavior used to build output chains for forwarding of network traffic.
The default behavior for output chain building favors convergence, if this behavior is permitted by the platform. (See your platform documentation for information on the convergence of recursive and nonrecursive prefixes.) Depending on your network requirements and resources, you might choose to do one of the following:
•
Use the convergence-speed keyword to increase convergence speed, which requires additional system resources, especially additional memory.
•Use the memory-utilization keyword to decrease memory use, which decreases convergence speed and uses fewer system resources.
The default is platform-specific and usually sufficient. The default falls between the options provided for your use with this command.
For all cef table output-chain build commands, the state is enabled, disabled, or use the system defaults. To remove any configuration you must enter the default keyword with the command instead of the no keyword. To disable an output chain-building characteristic, enter the no keyword.
The output of the show cef table command displays the current configuration and operational state of the Cisco Express Forwarding table.
Individual Overrides
This command is used for troubleshooting purposes only.
Note Use this command only on the advice of field personnel from Cisco.
The use of the cef table output-chain build command with either the indirection or inplace-modify keyword overrides specific Cisco Express Forwarding table output chain-building behavior. Indirection characteristics are installed by default if the platform supports or permits their use.
The indirection keyword enables or disables the insertion of indirection objects for recursive or nonrecursive prefixes or for both recursive and nonrecursive prefixes. Inserting an indirection object into the forwarding chain allows the handling of any aggregate event that affects multiple prefixes by the modification of the indirection object. For example, if a number of recursive prefixes all share the same recursive nexthop, and the route to the recursive nexthop changes, a single update to an indirection object can restore forwarding for those recursive prefixes.
If you configure the cef table output-chain build indirection command without a prefix type, recursive and nonrecursive prefixes are explicitly enabled. This command would override any preference configured with the existing cef table output-chain build favor command.
The inplace-modify keyword enables or disables the ability to modify certain objects in the forwarding chain by modifying the data that an object holds. The alternative is a complete replacement of the object and the relinking of all links to the object.
To return to system default settings for Cisco Express Forwarding table output chain building, use the default form of the command.
The output of the show cef table command displays the current configuration and operational state of the Cisco Express Forwarding table.
Examples
The following example shows how to configure the use of less memory for table output chain building:
Router(config)# cef table output-chain build favor memory
Use this command if your priority is to save memory and your network does not require a faster convergence speed for table output chain building for forwarding of network traffic.
Related Commands
cef table rate-monitor-period
To set a time period over which to calculate the rate of route updates from the Routing Information Base (RIB) to the Cisco Express Forwarding Forwarding Information Base (FIB) tables, use the cef table rate-monitor-period command in global configuration mode. To return to the default time period, use the no form of this command.
cef table rate-monitor-period minutes
no cef table rate-monitor-period minutes
Syntax Description
minutes |
The time period, in minutes, over which to calculate the rate of route updates to Cisco Express Forwarding tables. The range is from 1 to 60. The default is 5. |
Command Default
If the command is not configured, the sampling rate is every 5 minutes.
Command Modes
Global configuration (config)
Command History
Usage Guidelines
Use this command to change the sampling rate period over which to monitor route updates from the RIB to the Cisco Express Forwarding IPv4 and IPv6 FIB tables. Changing the sampling period allows you to calculate the rate of route insertion into the FIB at any interval length from 1 minute to 60 minutes.
Examples
The following example shows how to set the time period to 1 minute over which to calculate the rate of route updates from the RIB to the IPv4 FIB and IPv6 FIB:
Router(config)# cef table rate-monitor-period 1
Related Commands
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show cef table |
Displays the configuration and operational state of the Cisco Express Forwarding FIB table. |
clear adjacency
To clear the Cisco Express Forwarding adjacency table, use the clear adjacency command in privileged EXEC mode.
clear adjacency
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
Using the clear adjacency command repopulates adjacencies from sources. Any remaining stale adjacencies (meaning those that fail to repopulate on request) are then purged. Layer 2 next hop information is reevaluated.
Clearing adjacencies cause the adjacency table to repopulate from the Layer 2 to Layer 3 mapping tables. To reevaluate the mappings, clear the source information by using a Cisco IOS command, such as the clear arp-cache command.
For Cisco 7500 Routers
On a distributed system, the adjacency tables that reside on line cards are always synchronized to the adjacency table that resides on the Route/Switch Processor (RSP). Refreshing the adjacencies also refreshes adjacencies on line cards and purges stale entries. (Entering the clear adjacency command on a line card has no effect.)
Examples
The following example clears the adjacency table:
Router# clear adjacency
Related Commands
clear adjacency epoch
Note The clear adjacency epoch command is not available in Cisco IOS Releases 12.2(25)S, 12.2(28)SB, 12.2(33)SRA, 12.2(33)SXH, 12.4(20)T and later releases.
To begin a new epoch and increment the epoch number of the Cisco Express Forwarding adjacency table, use the clear adjacency epoch command in privileged EXEC mode.
clear adjacency epoch
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
The clear adjacency epoch command increments the epoch and flushes entries with the old epoch. This command clears inconsistencies.
Use the clear adjacency epoch command when you want to rebuild the adjacency table. A new adjacency table might be required because the user wants to remove inconsistencies from the table.
Examples
The following example shows how to begin a new epoch and increments the epoch number of the adjacency table:
Router# clear adjacency epoch
clear cef interface
To clear the Cisco Express Forwarding per-interface traffic policy statistics for an interface, use the clear cef interface command in privileged EXEC mode.
clear cef interface [interface-type interface-number] policy-statistics
Syntax Description
interface-type |
Type of interface to clear the policy statistics for |
interface-number |
Port, connector, or interface card number |
policy-statistics |
Policy statistics for the specified interface. |
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
This command clears the Cisco Express Forwarding Border Gateway Protocol (BGP) traffic policy statistics counters for an interface.
If you do not specify an interface type and interface number the policy statistics for all interfaces are cleared.
Examples
The following example clears the Cisco Express Forwarding BGP traffic policy statistics counters:
Router# clear cef interface ethernet 0/0 policy-statistics
Router#
Related Commands
clear cef linecard
To clear Cisco Express Forwarding information from line cards, use the clear cef linecard command in privileged EXEC mode.
clear cef linecard [slot-number] [adjacency | interface | prefix]
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
This command is available only on distributed platforms (such as the Cisco 7500 series) running distributed Cisco Express Forwarding.
Cisco Express Forwarding information on the line cards is cleared; however, Cisco Express Forwarding information on the Route Processor (RP) is not affected.
After you clear Cisco Express Forwarding information from line cards, the corresponding information from the RSP is propagated to the line cards. Interprocess communications (IPC) ensures that
Cisco Express Forwarding information on the Route Switch Processor (RSP) matches the Cisco Express Forwarding information on the line cards.
Because this command might require significant processing resources and can cause dropped traffic or system error messages about excessive CPU use, its use is recommended only as a last resort for debugging or mitigating serious problems.
Note Cisco 10000 series routers do not support the clear cef linecard command.
Examples
The following example clears the Cisco Express Forwarding information from the line cards:
clear cef linecard
Related Commands
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show cef linecard |
Displays Cisco Express Forwarding-related interface information by line card. |
clear cef load-balance statistics
To clear Cisco Express Forwarding (CEF) load balancing information, use the clear cef load-balance statistics command in privileged EXEC mode.
clear cef load-balance statistics
Syntax Description
This command has no arguments or keywords.
Command Default
Cisco Express Forwarding load balancing information is not cleared.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
Cisco Express Forwarding load balancing is based on a combination of source and destination packet information; it allows you to optimize resources by distributing traffic over multiple paths for transferring data to a destination. You can use the clear cef load-balance statistics command to clear Cisco Express Forwarding load balancing information. To select and configure the load balancing algorithm and to record the statistics, use the ip cef load-sharing algorithm command.
Examples
The following example shows how to clear CEF load balancing information:
Router# clear cef load-balance statistics
Related Commands
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ip cef load-sharing algorithm |
Selects a Cisco Express Forwarding load-balancing algorithm. |
show cef |
Displays information about packets forwarded by Cisco Express Forwarding. |
clear cef table
To clear the Cisco Express Forwarding tables, use the clear cef table command in privileged EXEC mode.
clear cef table {ipv4 | ipv6} [vrf {vrf-name | * }]
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
The clear cef table command clears the selected table or address family of tables (for IPv4 or IPv6) and updates (refreshes) them throughout the router (including the Route Processor and line cards). The command increments the table epoch, updates the tables, distributes the updated information to the line cards, and performs a distributed purge of any stale entries in the tables based on the noncurrent epoch number. This ensures that any inconsistencies that occurred over time are removed.
Because this command might require significant processing resources and can cause dropped traffic or system error messages about excessive CPU use, it's use is recommended only as a last resort for debugging or mitigating serious problems.
Cisco Express Forwarding tables are also cleared automatically during bootup or online insertion and removal (OIR) of line cards.
Note On the Cisco 10000 series routers, IPv6 is supported on Cisco IOS Release 12.2(28)SB or later releases.
Examples
The following example clears the Cisco Express Forwarding tables for the IPv6 address family:
Router# clear cef table ipv6 vrf *
The following example clears the Cisco Express Forwarding tables for a VRF table named vrf1 in the IPv4 address family:
Router# clear cef table ipv4 vrf vrf1
The following example clears the Cisco Express Forwarding tables for all VRF tables in the IPv4 address family. This example shows output with Cisco Express Forwarding table debugging enabled:
Router# clear cef table ipv4 vrf *
06:56:01: FIBtable: Refreshing table IPv4:Default
06:56:01: FIBtable: Invalidated 224.0.0.0/4 in IPv4:Default
06:56:01: FIBtable: Deleted 224.0.0.0/4 from IPv4:Default
06:56:01: FIBtable: Validated 224.0.0.0/4 in IPv4:Default
06:56:01: FIBtable: IPv4: Event up, 10.1.41.0/24, vrf Default, 1 path, flags 0100
0220
06:56:01: FIBtable: IPv4: Adding route for 10.1.41.0/24 but route already exists.
Trying modify.
06:56:01: FIBtable: IPv4: Event up, 10.0.0.11/32, vrf Default, 1 path, flags 010
00000
06:56:01: FIBtable: IPv4: Adding route for 10.0.0.11/32 but route already exists
. Trying modify.
06:56:01: FIBtable: IPv4: Event up, 10.0.0.15/32, vrf Default, 1 path, flags 010
00000
06:56:01: FIBtable: IPv4: Adding route for 10.0.0.15/32 but route already exists
. Trying modify.
06:56:01: FIBtable: IPv4: Event up, 10.0.0.7/32, vrf Default, 1 path, flags 0100
0220
06:56:01: FIBtable: IPv4: Adding route for 10.0.0.7/32 but route already exists.
Trying modify.
06:56:01: FIBtable: IPv4: Event up, 10.0.0.0/8, vrf Default, 1 path, flags 00000
220
06:56:01: FIBtable: IPv4: Adding route for 10.0.0.0/8 but route already exists.
Trying modify.
06:56:01: FIBtable: IPv4: Event up, 0.0.0.0/0, vrf Default, 1 path, flags 004200
05
06:56:01: FIBtable: IPv4: Adding route for 0.0.0.0/0 but route already exists. T
rying modify.
06:56:01: FIBtable: Starting purge of table IPv4:Default to epoch 13
06:56:01: FIBtable: Invalidated 10.1.41.1/32 in IPv4:Default
06:56:01: FIBtable: Deleted 10.1.41.1/32 from IPv4:Default
06:56:01: FIBtable: Purged 1 prefix from table IPv4:Default
06:56:01: FIBtable: Validated 10.1.41.1/32 in IPv4:Default
06:56:06: FIBtable: IPv4: Event modified, 0.0.0.0/0, vrf Default, 1 path, flags
00420005
06:56:06: FIBtable: IPv4: Event up, default, 0.0.0.0/0, vrf Default, 1 path, fla
gs 00420005
06:56:06: FIBtable: IPv4: Adding route for 0.0.0.0/0 but route already exists. T
rying modify.
Related Commands
clear ip cache
To delete entries in the routing table cache used to fast switch IP traffic, use the clear ip cache command in privileged EXEC mode.
clear ip cache [prefix mask]
Syntax Description
prefix mask |
(Optional) Deletes only the entries in the cache that match the prefix and mask combination. |
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
Use this command to clear routes from the routing table cache. You can remove all entries in the routing cache or you can remove only those entries associated with a specified prefix and mask.
Note IPv4 fast switching is not supported in Cisco IOS 12.4(20)T and later releases.
Examples
The following command shows how to delete the all of the entries in the routing table cache:
Router# clear ip cache
The following command show how to delete entries in the router table associated with the prefix and mask 192.168.32.0 255.255.255.0:
Router# clear ip cache 192.168.32.0 255.255.255.0
Related Commands
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ip route-cache |
Controls the use of high-speed switching caches for IP routing. |
show ip cache |
Displays the routing table cache used to fast switch IP traffic. |
clear ip cef epoch
Note The clear ip cef epoch command is not available in Cisco IOS Releases 12.2(25)S, 12.2(28)SB, 12.2(33)SRA, 12.2(33)SXH, 12.4(20)T, and later releases.
To begin a new epoch and increment the epoch number for one or all Cisco Express Forwarding tables, use the clear ip cef epoch command in privileged EXEC mode.
clear ip cef epoch [all-vrfs | full | vrf [table]]
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
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12.2(8)T |
This command was introduced. |
Usage Guidelines
Use the clear ip cef epoch command when you want to rebuild a table. This command increments the epoch number and flushes entries with the old epoch number. This command clears any inconsistencies that might exist, so if everything in the system is working correctly, this command does not affect the Cisco Express Forwarding forwarding tables other than changing the current epoch values.
Examples
The following example shows the output before and after you clear the epoch table and increment the epoch number:
Router# show ip cef epoch
CEF epoch information:
Table: Default-table
Table epoch: 2 (43 entries at this epoch)
Adjacency table
Table epoch: 2 (5 entries at this epoch)
Router# clear ip cef epoch full
Router# show ip cef epoch
CEF epoch information:
Table: Default-table
Table epoch: 3 (43 entries at this epoch)
Adjacency table
Table epoch: 3 (5 entries at this epoch)
Related Commands
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show cef state |
Displays the state of Cisco Express Forwarding. |
show ip cef epoch |
Displays the table epochs of the adjacency table and of all FIB tables. |
clear ip cef epoch full
To begin a new epoch and increment the epoch number for all Cisco Express Forwarding tables (including the adjacency table), use the clear ip cef epoch full command in privileged EXEC mode.
clear ip cef epoch full
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
Use the clear ip cef epoch full command when you want to rebuild a table. This command allows old and new table entries to be distinguished within the same data structure and allows you to retain the old Cisco Express Forwarding database table while constructing the new table.
These show commands display epoch information:
•show ip cef summary—Displays the table epoch for a specific Forwarding Information Base (FIB) table.
•show ip cef detail—Displays the epoch value for each entry of a specific FIB table.
•show adjacency summary—Displays the adjacency table epoch.
•show adjacency detail—Displays the epoch value for each entry of the adjacency table.
Examples
This example shows the output before and after you clear the epoch table and increment the epoch number:
Router# show ip cef epoch
CEF epoch information:
Table:Default-table
Table epoch:2 (164 entries at this epoch)
Adjacency table
Table epoch:1 (33 entries at this epoch)
Router# clear ip cef epoch full
Router# show ip cef epoch
CEF epoch information:
Table:Default-table
Table epoch:3 (164 entries at this epoch)
Adjacency table
Table epoch:2 (33 entries at this epoch)
Related Commands
clear ip cef event-log
Note Effective with Cisco IOS 12.2(25)S, the clear ip cef event-log command is replaced by the monitor event-trace cef ipv4 clear command. See the monitor event-trace (EXEC) command for more information.
To clear the Cisco Express Forwarding event-log buffer, use the clear ip cef event-log command in privileged EXEC mode.
clear ip cef event-log
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
This command clears the entire Cisco Express Forwarding table event log that holds Forwarding Information Base (FIB) and adjacency events.
Examples
The following example shows how to clear the Cisco Express Forwarding event-log buffer:
Router# clear ip cef event-log
Related Commands
clear ip cef inconsistency
To clear the Cisco Express Forwarding inconsistency checker statistics and records found by the Cisco Express Forwarding consistency checkers, use the clear ip cef inconsistency command in privileged EXEC mode.
clear ip cef inconsistency
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
This command clears the Cisco Express Forwarding inconsistency checker statistics and records that accumulate when the cef table consistency-check command is enabled.
Examples
The following example shows how to clear all Cisco Express Forwarding inconsistency checker statistics and records:
Router# clear ip cef inconsistency
Related Commands
clear ip cef prefix-statistics
To clear Cisco Express Forwarding counters by resetting the packet and byte count to zero (0), use the clear ip cef prefix-statistics command in privileged EXEC mode.
clear ip cef network [mask] prefix-statistics
Syntax Description
network |
Forwarding Information Base (FIB) entry specified by network. |
mask |
(Optional) FIB entry specified by network and mask. |
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
When the clear statistics flag is set, statistics are cleared as the FIB table is scanned. The time period is up to 60 seconds for all statistics to clear. However, clearing a specific prefix is completed immediately.
Examples
The following example shows how to reset the packet and byte counts to zero for Cisco Express Forwarding entries on the 172.17.10.10 network:
Router# clear ip cef 172.17.10.10 prefix-statistics
Related Commands
clear ip mds
To clear multicast distributed switching (MDS) information from the router, use the clear ip mds command in privileged EXEC mode.
clear ip mds {all | [vrf vrf-name] forwarding}
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
Cisco 12000 Series Internet Router
On a Cisco 12000 series Internet router the clear ip mds command must be run in privileged EXEC mode on a linecard.
Examples
The following example clears all line card routes in an MFIB table on a Cisco 12000 series Internet router:
Router# attach 1
LC-Slot1> enable
LC-Slot1# clear ip mds forwarding
The following example clears all line card routes in an MFIB table on a Cisco 7500 series router:
Router# clear ip mds forwarding
Related Commands
clear ip mds forwarding
The forwarding keyword for the clear ip mds command is no longer documented as a separate command.
The information for using the forwarding keyword for the clear ip mds command has been incorporated into the clear ip mds command documentation. See the clear ip mds command documentation for more information.
clear ip mds linecard
To reset multicast distributed switching (MDS) line card information on the router, use the clear ip mds linecard command in privileged EXEC mode.
clear ip mds linecard {linecard-slot-number | *}
Syntax Description
linecard-slot-number |
Slot number containing the line card to be reset. |
* |
Indicates that the reset should be executed on all line cards. |
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
When the * keyword is specified instead of the linecard-slot-number argument, all MDS information on all line cards is cleared and reset.
Examples
The following example clears and resets all MDS line card information on the router:
Router# clear ip mds linecard *
Related Commands
clear ip traffic
To clear the global or system-wide IP traffic statistics for one or more interfaces, use the clear ip traffic command in privileged EXEC mode.
clear ip traffic [interface type number]
Syntax Description
interface type number |
(Optional) Clears the global or system-wide IP traffic statistics for a specific interface. If the interface keyword is used, the type and number arguments are required. |
Command Default
Using the clear ip traffic command with no keywords or arguments clears the global or system-wide IP traffic statistics for all interfaces.
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
Using the clear ip traffic command with the optional interface keyword clears the ipIfStatsTable counters displayed for the specified interface and also clears the counters displayed by the show ip traffic interface command.
Examples
The following example clears the global or system-wide IP traffic statistics on all interfaces:
Router# clear ip traffic
The following example shows how to clear the IP traffic statistics on Ethernet interface 0/0:
Router# clear ip traffic interface ethernet 0/0
The following is sample output from the show ip traffic command for Ethernet interface 0/0 after clearing the traffic using the clear ip traffic command:
Router# show ip traffic
Ethernet0/0 IP-IF statistics :
Rcvd: 0 total, 0 total_bytes
0 format errors, 0 hop count exceeded
0 bad header, 0 no route
0 bad destination, 0 not a router
0 no protocol, 0 truncated
0 forwarded
0 fragments, 0 total reassembled
0 reassembly timeouts, 0 reassembly failures
0 discards, 0 delivers
Sent: 0 total, 0 total_bytes 0 discards
0 generated, 0 forwarded
0 fragmented into, 0 fragments, 0 failed
Mcast: 0 received, 0 received bytes
0 sent, 0 sent bytes
Bcast: 0 received, 0 sent
Related Commands
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show ip traffic |
Displays the global or system-wide IP traffic statistics for one or more interfaces. |
clear mls cef ip accounting per-prefix
To clear information about the IP per-prefix accounting statistics, use the clear mls cef ip accounting per-prefix command in privileged EXEC mode.
clear mls cef ip accounting per-prefix {all | {prefix mask [instance]}}
Syntax Description
all |
Clears all per-prefix accounting statistics information. |
prefix |
Entry prefix in the format A.B.C.D. |
mask |
Entry prefix mask. |
instance |
(Optional) VPN routing and forwarding instance name. |
Command Modes
Privileged EXEC (#)
Command History
Examples
This example shows how to clear all information about the per-prefix accounting statistics:
Router# clear mls cef ip accounting per-prefix all
clear pxf
To clear Parallel eXpress Forwarding (PXF) counters and statistics, use the clear pxf command in privileged EXEC mode.
clear pxf [dma counters | interface interface | statistics {context | diversion | drop | ip | ipv6} | xcm counters]
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
If no interface is specified, the command clears PXF counters on all interfaces. The clear pxf command clears counters associated with the show pxf dma, show pxf interface, show pxf statistics, and show pxf xcm commands.
Cisco uBR10012 Universal Broadband Router
Not all keyword options are supported in the Cisco IOS software for the Cisco uBR10012 universal broadband router. See the command history table for the unsupported keyword options by release.
The clear pxf xcm counters command is supported only on the PRE1 and later processors for the Cisco uBR10012 router. This command is not supported on the PRE processor.
Examples
The following example clears PXF statistics for serial interface 1/0/0:
Router# clear pxf interface serial 1/0/0
The following example clears PXF statistics on all interfaces:
Router# clear pxf interface
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