- rif
- rif timeout
- rif validate-age
- rif validate-enable
- rif validate-enable-age
- rif validate-enable-route-cache
- show access-expression
- show bridge
- show bridge circuit-group
- show bridge group
- show bridge multicast
- show bridge vlan
- show controllers token (IBM)
- show drip
- show interfaces crb
- show interfaces irb
- show interfaces tokenring (IBM)
- show lnm bridge
- show lnm config
- show lnm interface
- show lnm ring
- show lnm station
- show netbios-cache
- show pxf cpu statistics
- show pxf cpu subblock
- show pxf cpu tbridge
- show rif
- show source-bridge
- show span
- show spanning-tree
- show spantree
- show subscriber-policy
- source-bridge trcrf-vlan
- spanning-tree portfast (interface mode)
rif
To enter static source-route information into the Routing Information Field (RIF) cache, use the rif command in global configuration mode. To remove an entry from the cache, use the no form of this command.
rif mac-address rif-string {interface-name | ring-group ring}
no rif mac-address rif-string {interface-name | ring-group ring}
Syntax Description
Usage Guidelines
If a Token Ring host does not support the use of IEEE 802.2 TEST or XID datagrams as explorer packets, you may need to add static information to the RIF cache of the router.
Command Default
No static source-route information is entered.
Command Modes
Global configuration
Command History
Usage Guidelines
You must specify either an interface name or a ring group number to indicate the origin of the RIF. You specify an interface name (for example, tokenring 0) with the interface-name argument, and you specify a ring group number with the ring-group ring keyword and argument. The ring group number must match the number you specified with the source-bridge ring-group command. Ring groups are explained in the "Configuring Source-Route Bridging" chapter of the Bridging and IBM Networking Configuration Guide.
Using the command rif mac-address without any other arguments puts an entry into the RIF cache indicating that packets for this MAC address should not have RIF information.
Do not configure a static RIF with any of the all rings type codes. Doing so causes traffic for the configured host to appear on more than one ring and leads to unnecessary congestion.
Note 
Input to the source-bridge interface configuration command is in decimal format. RIF displays and input are in hexadecimal format, and IBM source-route bridges use hexadecimal for input. It is essential that bridge and ring numbers are consistent for proper network operation. This means you must explicitly declare the numbers to be hexadecimal by preceding the number with 0x, or you must convert IBM hexadecimal numbers to a decimal equivalent when entering them. For example, IBM hexadecimal bridge number 10 would be entered as hexadecimal number 0x10 or decimal number 16 in the configuration commands. In the displays, these commands always will be in decimal.
Examples
The following example configuration sets up a static RIF:
! insert entry with MAC address 1000.5A12.3456 and RIF of
! 0630.0081.0090 into RIF cache
rif 1000.5A12.3456 0630.0081.0090 tokenring 0
Related Commands
|
|
|
|---|---|
multiring |
Enables collection and use of RIF information. |
source-bridge ring-group |
Defines or removes a ring group from the configuration. |
rif timeout
To determine the number of minutes an inactive Routing Information Field (RIF) entry is kept, use the rif timeout command in global configuration mode. To restore the default, use the no form of this command.
rif timeout minutes
no rif timeout
Syntax Description
minutes |
Number of minutes an inactive RIF entry is kept. The value must be greater than 0. Default is 15 minutes. |
Defaults
15 minutes
Command Modes
Global configuration
Command History
Usage Guidelines
A RIF entry is cached based on the MAC address and the interface.
RIF information is maintained in a cache whose entries are aged. A RIF entry can be aged out even if there is active traffic, but the traffic is fast or autonomously switched. Until a RIF entry is removed from the cache, no new information is accepted for that RIF entry.
A RIF entry is refreshed only if a RIF field of an incoming frame is identical to the RIF information of the RIF entry in the cache.
Examples
The following example changes the timeout period to 5 minutes:
rif timeout 5
Related Commands
rif validate-age
To define the validation time when the Cisco IOS software is acting as a proxy for NetBIOS NAME_QUERY packet or for explorer frames, use the rif validate-age command in global configuration mode.
rif validate-age seconds
no rif validate-age seconds
Syntax Description
seconds |
Interval, in seconds, at which a proxy is sent. The valid range is any number greater than 0. Default is 2 seconds. |
Defaults
2 seconds
Command Modes
Global configuration
Command History
Usage Guidelines
If the timer expires before the response is received, the Routing Information Field (RIF) entry or the NetBIOS cache entry is marked as invalid and is flushed from the cache table when another explorer or NAME_QUERY packet is received.
Examples
The following example specifies the interval at which a proxy is sent to be 3 seconds:
rif validate-age 3
Related Commands
|
|
|
|---|---|
rif |
Enters static source-route information into the RIF cache. |
rif timeout |
Determines the number of minutes an inactive RIF entry is kept. |
rif validate-enable
To enable Routing Information Field (RIF) validation for entries learned on an interface (Token Ring or Fiber Distributed Data Interface [FDDI]), use the rif validate-enable command in global configuration mode. To disable the specification, use the no form of this command.
rif validate-enable
no rif validate-enable
Syntax Description
This command has no arguments or keywords.
Defaults
RIF validation is enabled.
Command Modes
Global configuration
Command History
Usage Guidelines
A RIF validation algorithm is used for the following cases:
•To decrease convergence time to a new source-route path when an intermediate bridge goes down.
•To keep a valid RIF entry in a RIF cache even if a RIF entry is not refreshed either because traffic is fast or autonomously switched, or because there is no traffic.
A directed IEEE TEST command is sent to the destination MAC address. If a response received in the time specified by the rif validate-age command, the entry is refreshed and is considered valid. Otherwise, the entry is removed from the cache. To prevent sending too many TEST commands, any entry that has been refreshed in fewer than 70 seconds is considered valid.
Validation is triggered as follows:
•When a RIF entry is found in the cache.
•When a RIF field of an incoming frame and the RIF information of the RIF entry is not identical. If, as the result of validation, the entry is removed from the cache, the RIF field of the next incoming frame with the same MAC address is cached.
•When the RIF entry is not refreshed for the time specified in the rif timeout command.
Note If the RIF entry has been in the RIF cache for 6 hours, and has not been refreshed for the time specified in the rif timeout command, the entry is removed unconditionally from the cache.
Note The rif validate-enable commands have no effect on remote entries learned over RSRB.
Examples
The following example enables RIF validation:
rif validate-enable
Related Commands
rif validate-enable-age
To enable Routing Information Field (RIF) validation for stations on a source-route bridge network that do not respond to an IEEE TEST command, use the rif validate-enable-age command in global configuration mode. To disable the specification, use the no form of this command.
rif validate-enable-age
no rif validate-enable-age
Syntax Description
This command has no arguments or keywords.
Defaults
RIF validation is enabled.
Command Modes
Global configuration
Command History
Usage Guidelines
You must first issue the rif validate-enable command.
When this command is enabled, a RIF entry is not removed from the cache even if it becomes invalid. If the entry is refreshed, it becomes valid again.
If a RIF field of an incoming frame and the RIF information of the invalid RIF entry are not identical, the old RIF information is replaced by the new information.
Note The rif validate-enable commands have no effect on remote entries learned over remote source-route bridging (RSRB).
Examples
The following example enables RIF validation:
rif validate-enable-age
Related Commands
|
|
|
|---|---|
rif validate-enable |
Enables RIF validation for entries learned on an interface (Token Ring or FDDI). |
rif validate-enable-route-cache
To enable synchronization of the Routing Information Field (RIF) cache with the protocol route cache, use the rif validate-enable-route-cache command in global configuration mode. To disable the specification, use the no form of this command.
rif validate-enable-route-cache
no rif validate-enable-route-cache
Syntax Description
This command has no arguments or keywords.
Defaults
Disabled
Command Modes
Global configuration
Command History
Usage Guidelines
When a RIF entry is removed from the RIF cache, or the RIF information in the RIF entry is changed, the protocol route caches are synchronized with the RIF cache.
Note The rif validate-enable commands have no effect on remote entries learned over remote source-route bridging (RSRB).
Examples
The following example synchronizes the RIF cache with the protocol route cache:
rif validate-enable-route-cache
Related Commands
|
|
|
|---|---|
rif validate-enable |
Enables RIF validation for entries learned on an interface (Token Ring or FDDI). |
show access-expression
To display the defined input and output access list expressions, use the show access-expression command in privileged EXEC mode.
show access-expression [begin | include | exclude]
Syntax Description
begin |
(Optional) Begin with the access list expression that matches. |
include |
(Optional) Include access list expressions that match. |
exclude |
(Optional) Exclude access list expressions that match. |
Defaults
Displays all input and output access list expressions.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show access-expression command:
Router# show access-expression
Router# interface TokenRing0/0:
Input:(dmac(701) | ~lsap(202))
See the access-expression command for a description of the access expressions.
Related Commands
|
|
|
|---|---|
access-expression |
Defines an access expression. |
show bridge
To display classes of entries in the bridge forwarding database, use the show bridge command in privileged EXEC mode.
show bridge [bridge-group] [interface] [address [mask]] [verbose]
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
This command first appeared in Cisco IOS Release 10.0. The verbose keyword first appeared in
Cisco IOS Release 11.0.
The following are possible variations of the show bridge command:
show bridge ethernet 0
show bridge 0000.0c00.0000 0000.00FF.FFFF
show bridge 0000.0c00.0e1a
show bridge
show bridge verbose
In the sample output, the first command would display all entries for hosts reachable via Ethernet interface 0, the second command would display all entries with the vendor code of 0000.0c00.0000, and the third command would display the entry for address 0000.0c00.0e1a. In the fourth command, all entries in the forwarding database would be displayed. The fifth command provides additional detail. In all five lines, the bridge group number has been omitted.
Examples
The following is sample output from the show bridge command. The second display is output from the
show bridge command with the verbose argument.
Router# show bridge
Total of 300 station blocks, 280 free
Codes: P - permanent, S - self
Bridge Group 32:Bridge Group 32:
Address Action Interface Age RX count TX count
0180.c200.0000 receive - S 0 0
ffff.ffff.ffff receive - S 0 0
0900.2b01.0001 receive - S 0 0
0300.0c00.0001 receive - S 0 0
0000.0c05.1000 forward Ethernet0/1 4 1 0
0000.0c04.4b5b receive - S 0 0
0000.0c04.4b5e receive - S 0 0
0000.0c04.4b5d receive - S 0 0
0000.0c04.4b5c receive - S 0 0
0000.0c05.4a62 forward Ethernet0/1 4 1 0
aa00.0400.2108 forward Ethernet0/1 0 42 0
0000.0c12.b888 forward Ethernet0/2 4 1 0
0000.0c12.b886 forward Ethernet0/1 4 1 0
aa00.0400.4d09 forward Ethernet0/1 4 1 0
0000.0c06.fb9a forward Ethernet0/1 4 1 0
0000.0c04.b039 forward Ethernet0/1 4 1 0
Router# show bridge verbose
Total of 300 station blocks, 287 free
Codes: P - permanent, S - self
BG Hash Address Action Interface DLCI Age RX count TX count
32 00/0 0180.c200.0000 receive - - S 0 0
32 00/1 ffff.ffff.ffff receive - - S 0 0
32 01/0 0900.2b01.0001 receive - - S 0 0
32 01/1 0300.0c00.0001 receive - - S 0 0
32 10/0 0000.0c04.4b5b receive - - S 0 0
32 15/0 0000.0c04.4b5e receive - - S 0 0
32 16/0 0000.0c04.4b5d receive - - S 0 0
32 17/0 0000.0c04.4b5c receive - - S 0 0
32 29/0 aa00.0400.2108 forward Ethernet0/1 - 0 48 0
32 30/0 0000.0c12.b888 forward Ethernet0/2 - 0 1 0
32 A4/0 0800.2002.ff5b forward Ethernet0/1 - 0 6 0
32 E2/0 aa00.0400.e90b forward Ethernet0/1 - 0 65 0
32 F2/0 0000.0c04.b042 forward Ethernet0/2 - 3 2 0
Table 14 describes the significant fields shown in the display.
show bridge circuit-group
To display the interfaces configured in each circuit group and show whether they are currently participating in load distribution, use the show bridge circuit-group command in user EXEC or privileged EXEC mode.
show bridge [bridge-group] circuit-group [circuit-group] [src-mac-address] [dst-mac-address]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
Examples
The following is sample output from various show bridge circuit-group command strings:
Router# show bridge circuit-group
Bridge group 1 Circuit group 1:
Interface Serial0 : inserted, learning, forwarding
Interface Serial3 : inserted, learning, forwarding
Bridge group 1 Circuit group 2:
Interface Serial2 : inserted, learning, forwarding
Router# show bridge 1 circuit-group 1
Bridge group 1 Circuit group 1:
Interface Serial0 : inserted, learning, forwarding
Interface Serial3 : inserted, learning, forwarding
Router# show bridge 1 circuit-group 2
Bridge group 1 Circuit group 2:
Interface Serial2 : inserted, learning, forwarding
Router# show bridge 1 circuit-group 1 0000.6502.23EA 0000.1234.4567
Output circuit group interface is Serial3
Router# show bridge 1 circuit-group 1 0000.6502.23EA
%Destination MAC address required
Router# show bridge 1 circuit-group 1
Bridge group 1 Circuit group 1:
Transmission pause interval is 250ms
Output interface selection is source-based
Interface Serial0 : inserted, learning, forwarding
Interface Serial3 : inserted, learning, forwarding
Interface Serial2 is unavailable
Router# show bridge 1 circuit-group 1 0000.6502.23EA 0000.1234.4567
%Please enter source MAC address only
Table 15 describes the significant fields shown in the display.
show bridge group
To display the status of each bridge group, use the show bridge group command in privileged EXEC mode.
show bridge group [verbose]
Syntax Description
verbose |
(Optional) Displays detailed information. |
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show bridge group command:
Router# show bridge group
Bridge Group 1 is running the DEC compatible Spanning Tree Protocol
Port 7 (ATM0.1 LANE Ethernet) of bridge group 1 is down
Port 4 (TokenRing0) of bridge group 1 is forwarding
"Forwarding" and "down" indicate the port state as determined by the spanning-tree algorithm or via configuration.
The following examples are for bridge group 30 and bridge group 40 of a PA-12E/2FE port adapter in slot 3:
Router# show bridge group
Bridge Group 30 is running the IEEE compatible Spanning Tree Protocol
Port 19 (Fast Ethernet3/0) of bridge group 30 is forwarding
Port 20 (Fast Ethernet3/1) of bridge group 30 is forwarding
Port 21 (Ethernet3/2) of bridge group 30 is forwarding
Port 22 (Ethernet3/3) of bridge group 30 is forwarding
Port 23 (Ethernet3/4) of bridge group 30 is forwarding
Port 24 (Ethernet3/5) of bridge group 30 is forwarding
Port 25 (Ethernet3/6) of bridge group 30 is forwarding
Bridge Group 40 is running the IEEE compatible Spanning Tree Protocol
Port 26 (Ethernet3/7) of bridge group 40 is down
Port 27 (Ethernet3/8) of bridge group 40 is down
Port 28 (Ethernet3/9) of bridge group 40 is down
Port 29 (Ethernet3/10) of bridge group 40 is down
Port 30 (Ethernet3/11) of bridge group 40 is down
Port 31 (Ethernet3/12) of bridge group 40 is down
Port 32 (Ethernet3/13) of bridge group 40 is down
show bridge multicast
To display transparent bridging multicast state information, use the show bridge multicast command in user EXEC or privileged EXEC mode.
show bridge [bridge-group] multicast [router-ports | groups] [group-address]
Syntax Description
Command Modes
User EXEC
Privileged EXEC
Command History
Examples
The following is sample output from the show bridge multicast command:
Router# show bridge multicast
Multicast router ports for bridge group 1:
2 multicast router ports
Fddi2/0 R
Ethernet0/4 R
Multicast groups for bridge group 1:
235.145.145.223 RX count TX count
Fddi2/0 R 0 2
Ethernet0/4 R 0 3
Ethernet0/3 G 1 0
235.5.5.5 RX count TX count
Fddi2/0 R 0 2
Ethernet0/4 R 0 3
Ethernet0/3 G 1 0
235.4.4.4 RX count TX count
Fddi2/0 R 0 2
Ethernet0/4 R 0 3
Ethernet0/3 G 1 0
Table 16 describes the significant fields shown in the display.
show bridge vlan
To display virtual LAN subinterfaces, use the show bridge vlan command in privileged EXEC mode.
show bridge vlan
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show bridge vlan command:
Router# show bridge vlan
Bridge Group: 50
Virtual LAN Trunking Interface(s): vLAN Protocol: vLAN ID: State
Fddi2/0.1000 IEEE 802.10 1000 forwarding
Fast Ethernet4/0.500 Inter Switch Link 500 listening
Virtual LAN Native Interface(s): State
Ethernet0/1 forwarding
Serial1/1 down
Table 17 describes the fields shown in the display.
show controllers token (IBM)
To display information about memory management, error counters, and the board itself, use the show controllers token command in privileged EXEC mode.
show controllers token
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
Depending on the board being used, the output from the show controllers token command can vary. The show controllers token command also displays proprietary information. Thus, the information that the show controllers token command displays is of primary use to Cisco Systems technical personnel. Information that is useful to users can be obtained with the show interfaces tokenring command, described later.
Examples
The following is sample output from the show controllers token command of a CSC-IR or CSC-2R card:
Router# show controllers token
TR Unit 0 is board 0 - ring 0
state 3, dev blk: 0x1D2EBC, mailbox: 0x2100010, sca: 0x2010000
current address: 0000.3080.6f40, burned in address: 0000.3080.6f40
current TX ptr: 0xBA8, current RX ptr: 0x800
Last Ring Status: none
Stats: soft:0/0, hard:0/0, sig loss:0/0
tx beacon: 0/0, wire fault 0/0, recovery: 0/0
only station: 0/0, remote removal: 0/0
Bridge: local 3330, bnum 1, target 3583
max_hops 7, target idb: 0x0, not local
Interface failures: 0 -- Bkgnd Ints: 0
TX shorts 0, TX giants 0
Monitor state: (active)
flags 0xC0, state 0x0, test 0x0, code 0x0, reason 0x0
f/w ver: 1.0, chip f/w: '000000.ME31100', [bridge capable]
SMT form of this command s: 1.01 kernel, 4.02 fastmac
ring mode: F00, internal enables: SRB REM RPS CRS/NetMgr
internal functional: 0000011A (0000011A), group: 00000000 (00000000)
if_state: 1, ints: 0/0, ghosts: 0/0, bad_states: 0/0
t2m fifo purges: 0/0
t2m fifo current: 0, t2m fifo max: 0/0, proto_errs: 0/0
ring: 3330, bridge num: 1, target: 3583, max hops: 7
Packet counts:
receive total: 298/6197, small: 298/6197, large 0/0
runts: 0/0, giants: 0/0
local: 298/6197, bridged: 0/0, promis: 0/0
bad rif: 0/0, multiframe: 0/0
ring num mismatch 0/0, spanning violations 0
transmit total: 1/25, small: 1/25, large 0/0
runts: 0/0, giants: 0/0, errors 0/0
bad fs: 0/0, bad ac: 0
congested: 0/0, not present: 0/0
Unexpected interrupts: 0/0, last unexp. int: 0
Internal controller counts:
line errors: 0/0, internal errors: 0/0
burst errors: 0/0, ari/fci errors: 0/0
abort errors: 0/0, lost frame: 0/0
copy errors: 0/0, rcvr congestion: 0/0
token errors: 0/0, frequency errors: 0/0
dma bus errors: -/-, dma parity errors: -/-
Internal controller smt state:
Adapter MAC: 0000.3080.6f40, Physical drop: 00000000
NAUN Address: 0000.a6e0.11a6, NAUN drop: 00000000
Last source: 0000.a6e0.11a6, Last poll: 0000.3080.6f40
Last MVID: 0006, Last attn code: 0006
Txmit priority: 0006, Auth Class: 7FFF
Monitor Error: 0000, Interface Errors: FFFF
Correlator: 0000, Soft Error Timer: 00C8
Local Ring: 0000, Ring Status: 0000
Beacon rcv type: 0000, Beacon txmit type: 0000
Beacon type: 0000, Beacon NAUN: 0000.a6e0.11a6
Table 18, Part 1 describes the fields shown in the first line of sample output.
In the following line, state 3 indicates the state of the board. The rest of this output line displays memory mapping that is of primary use to Cisco engineers.
state 3, dev blk: 0x1D2EBC, mailbox: 0x2100010, sca: 0x2010000
The following line also appears in show interface token output as the address and burned-in address (bia), respectively:
current address: 0000.3080.6f40, burned in address: 0000.3080.6f40
The following line displays buffer management pointers that change by board:
current TX ptr: 0xBA8, current RX ptr: 0x800
The following line indicates the ring status from the controller chipset. This information is used by LAN Network Manager:
Last Ring Status: none
The following line displays Token Ring statistics. See the Token Ring specification for more information:
Stats: soft:0/0, hard:0/0, sig loss:0/0
tx beacon: 0/0, wire fault 0/0, recovery: 0/0
only station: 0/0, remote removal: 0/0
The following line indicates that Token Ring communication has been enabled on the interface. If this line of output appears, the message "Source Route Bridge capable" should appear in the show interfaces tokenring display.
Bridge: local 3330, bnum 1, target 3583
Table 18, Part 2 describes the fields shown in the following line of sample output:
max_hops 7, target idb: 0x0, not local
The following line is specific to the hardware:
Interface failures: 0 -- Bkgnd Ints: 0
In the following line, transmit (TX) shorts are the number of packets the interface sends that are discarded because they are smaller than the medium's minimum packet size. TX giants are the number of packets the interface sends that are discarded because they exceed the medium's maximum packet size.
TX shorts 0, TX giants 0
The following line indicates the state of the controller. Possible values are active, failure, inactive, and reset.
Monitor state: (active)
The following line displays detailed information relating to the monitor state shown in the previous line of output. This information relates to the firmware on the controller. This information is relevant to Cisco engineers only if the monitor state is something other than active.
flags 0xC0, state 0x0, test 0x0, code 0x0, reason 0x0
Table 18, Part 3 describes the fields in the following line of output:
f/w ver: 1.0 expr 0, chip f/w: '000000.ME31100', [bridge capable]
The following line displays the version numbers for the kernel and the accelerator microcode of the Madge firmware on the board; this firmware is the Logical Link Control (LLC) interface to the chipset:
SMT form of this command s: 1.01 kernel, 4.02 fastmac
The following line displays LAN Network Manager information that relates to ring status:
ring mode: F00, internal enables: SRB REM RPS CRS/NetMgr
The following line corresponds to the functional address and the group address shown in show interfaces tokenring output:
internal functional: 0000011A (0000011A), group: 00000000 (00000000)
The following line displays interface board state information that is proprietary:
if_state: 1, ints: 0/0, ghosts: 0/0, bad_states: 0/0
The following lines display information that is proprietary. Our engineers use this information for debugging purposes:
t2m fifo purges: 0/0
t2m fifo current: 0, t2m fifo max: 0/0, proto_errs: 0/0
Each of the fields in the following line maps to a field in the show source bridge display, as follows: ring maps to srn; bridge num maps to bn; target maps to trn; and max hops maps to max:
ring: 3330, bridge num: 1, target: 3583, max hops: 7
In the following lines of output, the number preceding the slash (/) indicates the count since the value was last displayed; the number following the slash (/) indicates the count since the system was last booted:
Packet counts:
receive total: 298/6197, small: 298/6197, large 0/0
In the following line, the number preceding the slash (/) indicates the count since the value was last displayed; the number following the slash (/) indicates the count since the system was last booted. The runts and giants values that appear here correspond to the runts and giants values that appear in show interfaces tokenring output:
runts: 0/0, giants: 0/0
The following lines are receiver-specific information that Cisco engineers can use for debugging purposes:
local: 298/6197, bridged: 0/0, promis: 0/0
bad rif: 0/0, multiframe: 0/0
ring num mismatch 0/0, spanning violations 0
transmit total: 1/25, small: 1/25, large 0/0
runts: 0/0, giants: 0/0, errors 0/0
The following lines include very specific statistics that are not relevant in most cases, but exist for historical purposes. In particular, the internal errors, burst errors, ari/fci, abort errors, copy errors, frequency errors, dma bus errors, and dma parity errors fields are not relevant.
Internal controller counts:
line errors: 0/0, internal errors: 0/0
burst errors: 0/0, ari/fci errors: 0/0
abort errors: 0/0, lost frame: 0/0
copy errors: 0/0, rcvr congestion: 0/0
token errors: 0/0, frequency errors: 0/0
dma bus errors: -/-, dma parity errors: -/-
The following lines are low-level Token Ring interface statistics relating to the state and status of the Token Ring with respect to all other Token Rings on the line:
Internal controller smt state:
Adapter MAC: 0000.3080.6f40, Physical drop: 00000000
NAUN Address: 0000.a6e0.11a6, NAUN drop: 00000000
Last source: 0000.a6e0.11a6, Last poll: 0000.3080.6f40
Last MVID: 0006, Last attn code: 0006
Txmit priority: 0006, Auth Class: 7FFF
Monitor Error: 0000, Interface Errors: FFFF
Correlator: 0000, Soft Error Timer: 00C8
Local Ring: 0000, Ring Status: 0000
Beacon rcv type: 0000, Beacon txmit type: 0000
show drip
To display the status of the duplicate ring protocol (DRiP) database for a router or Route Switch Module (RSM), use the show drip command in privileged EXEC mode.
show drip
Syntax Descriptions
This command has no arguments or keywords.
Defaults
No default behavior or values.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show drip command:
Router# show drip
DRIP Database for Mgmt Domain Fast Ethernet4/0
--------------------------------------------------
Mac Address 0010-A6AE-B440
Vlan 100 Status 30 : l-active, l-config,
Mac Address 0010-2F72-C800
Vlan 20 Status 0C : r-active, r-config,
Vlan 1003 Status 0C : r-active, r-config,
Statistics:
Advertisements received 126
Advertisements processed 1
Advertisements transmitted 131
Last revision transmitted 0x84
Last changed revision transmitted 0x2
Related Commands
|
|
|
|---|---|
clear drip counters |
Clears DRiP counters. |
interface vlan |
Configures a Token Ring or Ethernet interface on the RSM. |
show vlans |
Displays virtual LAN subinterfaces. |
show interfaces crb
To display the configuration for each interface that has been configured for routing or bridging, use the show interfaces crb command in privileged EXEC mode.
show interfaces crb
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show interfaces crb command:
Router# show interfaces crb
Ethernet0/0
Routed protocols on Ethernet0/0:
appletalk decnet ip novell
Ethernet0/1
Routed protocols on Ethernet0/1:
appletalk decnet ip novell
Ethernet0/2
Routed protocols on Ethernet0/2:
appletalk ip
Bridged protocols on Ethernet0/2:
clns decnet vines apollo
novell xns
Software MAC address filter on Ethernet0/2
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 0 RCV Physical broadcast
0x00: 1 ffff.ffff.ffff 0 RCV Appletalk zone
0x2A: 0 0900.2b01.0001 0 RCV DEC spanning tree
0x49: 0 0000.0c36.7a45 0 RCV Interface MAC address
0xc0: 0 0100.0ccc.cccc 20 RCV CDP
0xc2: 0 0180.c200.0000 0 RCV IEEE spanning tree
0xF8: 0 0900.07ff.ffff 0 RCV Appletalk broadcast
Ethernet0/3
Routed protocols on Ethernet0/3:
appletalk ip
Bridged protocols on Ethernet0/3:
clns decnet vines apollo
novell xns
Software MAC address filter on Ethernet0/3
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 0 RCV Physical broadcast
0x00: 1 ffff.ffff.ffff 0 RCV Appletalk zone
0x2A: 0 0900.2b01.0001 0 RCV DEC spanning tree
0x49: 0 0000.0c36.7a45 0 RCV Interface MAC address
0xc0: 0 0100.0ccc.cccc 48 RCV CDP
0xc2: 0 0180.c200.0000 0 RCV IEEE spanning tree
0xF8: 0 0900.07ff.ffff 0 RCV Appletalk broadcast
Table 19 describes the significant fields shown in the display.
show interfaces irb
To display the configuration for each interface that has been configured for integrated routing or bridging, use the show interfaces irb command in privileged EXEC mode.
show interfaces {ethernet | fastethernet} [interface | slot/port] irb
Syntax Description
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show interfaces irb command:
Router# show interfaces ethernet 2 irb
Ethernet 2
Routed protocols on Ethernet 2:
appletalk ip
Bridged protocols on Ethernet 2:
appletalk clns decnet vines
apollo ipx xns
Software MAC address filter on Ethernet 2
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 4886 RCV Physical broadcast
0x1F: 0 0060.3e2b.a221 7521 RCV Appletalk zone
0x1F: 1 0060.3e2b.a221 0 RCV Bridge-group Virtual Interface
0x2A: 0 0900.2b01.0001 0 RCV DEC spanning tree
0x05: 0 0900.0700.00a2 0 RCV Appletalk zone
0xC2: 0 0180.c200.0000 0 RCV IEEE spanning tree
0xF8: 0 0900.07ff.ffff 2110 RCV Appletalk broadcast
The following example shows that IP is configured for the first PA-12E/2FE interface of the port adapter in slot 3:
Router# show interfaces fastethernet 3/0 irb
Fast Ethernet3/0
Routed protocols on Fast Ethernet3/0:
ip
Bridged protocols on Fast Ethernet3/0:
appletalk clns decnet ip
vines apollo ipx xns
Software MAC address filter on Ethernet3/0
Hash Len Address Matches Act Type
0x00: 0 ffff.ffff.ffff 0 RCV Physical broadcast
0x2A: 0 0900.2b01.0001 0 RCV DEC spanning tree
0xC2: 0 0180.c200.0000 0 RCV IEEE spanning tree
0xC7: 0 00e0.f7a4.5130 0 RCV Interface MAC address
0xC7: 1 00e0.f7a4.5130 0 RCV Bridge-group Virtual Interface
Table 20 describes the significant fields shown in the displays.
show interfaces tokenring (IBM)
To display information about the Token Ring interface and the state of source-route bridging (SRB), use the show interfaces tokenring command in privileged EXEC mode.
show interfaces tokenring [number]
Syntax Description
number |
(Optional) Interface number. If you do not provide a value, the command will display statistics for all Token Ring interfaces. |
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show interfaces tokenring command:
Router# show interfaces tokenring
TokenRing 0 is up, line protocol is up
Hardware is 16/4 Token Ring, address is 5500.2000.dc27 (bia 0000.3000.072b)
Internet address is 10.136.230.203, subnet mask is 255.255.255.0
MTU 8136 bytes, BW 16000 Kb, DLY 630 usec, rely 255/255, load 1/255
Encapsulation SNAP, loopback not set, keepalive set (10 sec)
ARP type: SNAP, ARP Timeout 4:00:00
Ring speed: 16 Mbps
Single ring node, Source Route Bridge capable
Group Address: 0x00000000, Functional Address: 0x60840000
Last input 0:00:01, output 0:00:01, output hang never
Output queue 0/40, 0 drops; input queue 0/75, 0 drops
Five minute input rate 0 bits/sec, 0 packets/sec
Five minute output rate 0 bits/sec, 0 packets/sec
16339 packets input, 1496515 bytes, 0 no buffer
Received 9895 broadcasts, 0 runts, 0 giants
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
32648 packets output, 9738303 bytes, 0 underruns
0 output errors, 0 collisions, 2 interface resets, 0 restarts
5 transitions
Table 21 describes the significant fields shown in the display.
show lnm bridge
Note Effective with Cisco IOS Release 12.3(4)T, the show lnm bridge command is not available in Cisco IOS 12.3T software.
To display all currently configured bridges and all parameters that are related to the bridge as a whole, not to one of its interfaces, use the show lnm bridge command in privileged EXEC mode.
show lnm bridge
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show lnm bridge command:
Router# show lnm bridge
Bridge 001-2-003, Ports 0000.3000.abc4, 0000.0028.abcd
Active Links: 0000.0000.0000 0000.0000.0000 0000.0000.0000 0000.0000.0000
Notification: 0 min, Threshold 00.10%
Table 22 describes the significant fields shown in the display.
show lnm config
Note Effective with Cisco IOS Release 12.3(4)T, the show lnm config command is not available in Cisco IOS 12.3T software.
To display the logical configuration of all bridges configured in a router, use the show lnm config command in privileged EXEC mode. This information is needed to configure an LAN Network Manager (LNM) Management Station to communicate with a router. This is especially important when the router is configured as a multiport bridge, thus employing the concept of a virtual ring.
show lnm config
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show lnm config command for a simple two-port bridge:
Router# show lnm config
Bridge(s) currently configured:
From ring 001, address 0000.3000.abc4
Across bridge 002
To ring 003, address 0000.0028.abcd
The following is sample output from the show lnm config command for a multiport bridge:
Router# show lnm config
Bridge(s) currently configured:
From ring 001, address 0000.0028.abc4
Across bridge 001
To ring 008, address 4000.0028.abcd
From ring 002, address 0000.3000.abc4
Across bridge 002
To ring 008, address 4000.3000.abcd
From ring 003, address 0000.3000.5735
Across bridge 003
To ring 008, address 4000.3000.5735
Table 23 describes the significant fields shown in the display.
show lnm interface
Note Effective with Cisco IOS Release 12.3(4)T, the show lnm interface command is not available in Cisco IOS 12.3T software.
To display all LAN Network Manager (LNM)-related information about a specific interface or all interfaces, use the show lnm interface command in privileged EXEC mode.
show lnm interface [type number]
Syntax Description
type |
(Optional) Interface type. |
number |
(Optional) Interface number. |
Defaults
The type argument is not specified, information about all interface types is displayed.
If number is not specified, information about all interface numbers is displayed.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
This command is for all types of interfaces, including Token Ring interfaces. If you want information specific to Token Ring, use the show lnm ring command.
Examples
The following is sample output from the show lnm interface command:
Router# show lnm interface
nonisolating error counts
interface ring Active Monitor SET dec lost cong. fc freq.token
TokenRing1 0001* 1000.5a98.23a0 00200 00001 00000 00000 00000 0000000002
Notification flags: FE00, Ring Intensive: FFFF, Auto Intensive: FFFF
Active Servers: LRM LBS REM RPS CRS
Last NNIN: never, from 0000.0000.0000.
Last Claim: never, from 0000.0000.0000.
Last Purge: never, from 0000.0000.0000.
Last Beacon: never, 'none' from 0000.0000.0000.
Last MonErr: never, 'none' from 0000.0000.0000.
isolating error counts
station int ring loc. weight line inter burst ac abort
1000.5a98.23a0 T1 0001 0000 00 - N00000 00000 00000 00000 00000
1000.5a98.239e T1 0001 0000 00 - N00000 00000 00000 00000 00000
1000.5a6f.bc15 T1 0001 0000 00 - N00000 00000 00000 00000 00000
0000.3000.abc4 T1 0001 0000 00 - N00000 00000 00000 00000 00000
1000.5a98.239f T1 0001 0000 00 - N00000 00000 00000 00000 00000
Table 24 describes the significant fields shown in the display. See the show lnm station command for a description of the fields that follow after the "isolating error counts" line in the sample output.
Related Commands
show lnm ring
Note Effective with Cisco IOS Release 12.3(4)T, the show lnm ring command is not available in Cisco IOS 12.3T software.
To display all LAN Network Manager (LNM) information about a specific Token Ring or all Token Rings, use the show lnm ring command in privileged EXEC mode.
show lnm ring [ring-number]
Syntax Description
ring-number |
(Optional) Number of a specific Token Ring. It can be a value in the range from 1 to 4095. |
Defaults
If the ring-number argument is not specified, information about all Token Rings is displayed.
Command Modes
Privileged EXEC
Command History
Usage Guidelines
If a specific interface is requested, it also displays a list of all active stations on that interface.
The output of this command is the same as the output of the show lnm interface command. See the show lnm interface and show lnm station commands for sample output and a description of the fields. The same information can be obtained by using the show lnm interface command, but instead of specifying an interface number, you specify a ring number as an argument.
Related Commands
show lnm station
Note Effective with Cisco IOS Release 12.3(4)T, the show lnm station command is not available in Cisco IOS 12.3T software.
To display LAN Network Manager (LNM)-related information about a specific station or all known stations on all rings, use the show lnm station command in privileged EXEC mode
show lnm station [address]
Syntax Description
address |
(Optional) Address of a specific LNM station. |
Command Modes
Privileged EXEC
Command History
Usage Guidelines
If a specific station is requested, it also displays a detailed list of that station's current MAC-level parameters.
Examples
The following is sample output from the show lnm station command when a particular address has been specified:
Router# show lnm station 1000.5a6f.bc15
isolating error counts
station int ring loc. weight line inter burst ac abort
1000.5a6f.bc15 T1 0001 0000 00 - N 00000 00000 00000 00000 00000
Unique ID: 0000.0000.0000 NAUN: 0000.3000.abc4
Functional: C000.0000.0000 Group: C000.0000.0000
Physical Location: 00000 Enabled Classes: 0000
Allowed Priority: 00000 Address Modifier: 0000
Product ID: 00000000.00000000.00000000.00000000.0000
Ucode Level: 00000000.00000000.0000
Station Status: 00000000.0000
Last transmit status: 00
Table 25 describes the significant fields shown in the display.
|
|
|
|---|---|
station |
MAC address of the given station on the Token Ring. |
int |
Interface used to reach the given station. |
ring |
Number of the Token Ring where the given station is located. |
loc. |
Physical location number of the given station. |
weight |
Weighted accumulation of the errors of the given station, and of its nearest active upstream neighbor (NAUN). The three possible letters and their meanings are as follows:1 • • • |
isolating error counts |
Current values of the five isolating error counters specified in the 802.5 specification. These are Line errors, Internal errors, Burst errors, AC errors, and Abort errors. |
|
|
|
Unique ID: |
Uniquely assigned value for this station. |
NAUN: |
MAC address of this station's "upstream" neighbor. |
Functional: |
MAC-level functional address currently in use by this station. |
Group: |
MAC-level group address currently in use by this station. |
Physical Location: |
Number assigned to this station as its "Physical Location" identifier. |
Enabled Classes: |
Functional classes that the station is allowed to send. |
Allowed Priority: |
Maximum access priority that the station may use when sending onto the Token Ring. |
Address Modifier: |
Reserved field. |
Product ID: |
Encoded 18-byte string used to identify what hardware and software combination is running on this station. |
Ucode Level: |
10-byte extended binary coded decimal interchange code (EBCDIC) string indicating the microcode level of the station. |
Station Status: |
Implementation-dependent vector that is not specified anywhere. |
Last transmit status: |
Contains the strip status of the last "Report Transmit Forward" MAC frame forwarded by this interface. |
1 The description of these error conditions can be found in the IBM Architecture Reference Manual. |
show netbios-cache
To display a list of NetBIOS cache entries, use the show netbios-cache command in privileged EXEC mode.
show netbios-cache
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show netbios-cache command:
Router# show netbios-cache
HW Addr Name How Idle NetBIOS Packet Savings
1000.5a89.449a IC6W06_B TR1 6 0
1000.5a8b.14e5 IC_9Q07A TR1 2 0
1000.5a25.1b12 IC9Q19_A TR1 7 0
1000.5a25.1b12 IC9Q19_A TR1 10 0
1000.5a8c.7bb1 BKELSA1 TR1 4 0
1000.5a8b.6c7c ICELSB1 TR1 - 0
1000.5a31.df39 ICASC_01 TR1 - 0
1000.5ada.47af BKELSA2 TR1 10 0
1000.5a8f.018a ICELSC1 TR1 1 0
Table 26 describes the significant fields shown in the display.
Related Commands
show pxf cpu statistics
To display parallel express forwarding (PXF) central processing unit (CPU) statistics for a configured router, use the show pxf cpu statistics command in privilege EXEC mode.
show pxf cpu statistics [crtp | diversion | drop | ip | mlp | qos | spd]
Syntax Description
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show pxf cpu statistics command for diversion statistics:
Router# show pxf cpu statistics diversion
Diversion Cause Stats:
local = 31
dest = 0
option = 0
protocol = 0
encap = 0
oam f5 = 149
oam f4 = 0
atm ilmi = 0
comp = 0
ip_sanity = 0
ip_bcast = 0
ip_dest = 0
fib_punt = 0
mtu = 0
arp = 1
rarp = 0
icmp = 0
divert = 0
no_group = 0
direct = 0
local_mem = 0
p2p_prune = 0
assert = 0
dat_prune = 0
join_spt = 0
null_out = 0
igmp = 0
register = 0
no_fast = 0
ipc_resp = 0
keepalive = 0
min_mtu = 0
icmp_frag = 0
icmp_bad = 0
mpls_ttl = 0
tfib = 0
multicast = 0
clns_isis = 0
ppp_cntrl = 0
tun_norte = 0
tun_nofrg = 0
ctcp_in = 0
vsi_sig = 8
mvpn_tfrg = 0
cdp = 0
!IRB counters
smf_msmtch= 0
irb_stp = 0
brdg_ip = 0
no_rt_ip = 0
multi_mac = 0
Related Commands
show pxf cpu subblock
To display parallel express forwarding (PXF) central processing unit (CPU) statistics for a bridged subinterface (encapsulation type), use the show pxf cpu subblock command in privileged EXEC mode.
show pxf cpu subblock interface-name
Syntax Description
interface-name |
Name of the interface. |
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show pxf cpu subblock command, which shows the bridge-group virtual interface software MAC-address filtering (SMF) table:
Router# show pxf cpu subblock switch1.100
Switch1.100 is up
ICB = C001, LinkId = 3, interface PXF, enabled
IOS encapsulation type 33 ATM
!BVI encapsulation denoted by the type.
ICB: Index: 49155 Min mtu: 4 Max mtu: 4486 Encapsulation Type:8
VCCI maptable location = 0x8340A800
VCCImap entry: vcci: 0x5 u0 : 0x64 Max mtu : 4486
Min mtu : 0x4 vc_type_flags: 0x20
VCCI 0x5 seg channel id 0x1A5
icmp ipaddress 10.4.4.1 timestamp 0
feature_data: flags 0x0000 fib_index 0x0
col_5_cicb.flags : 0x00
Related Commands
show pxf cpu tbridge
To display parallel express forwarding (PXF) central processing unit (CPU) statistics for transparent bridging, use the show pxf cpu tbridge command in privileged EXEC mode.
show pxf cpu tbridge
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show pxf cpu tbridge command, which shows the bridge-group virtual interface software MAC-address filtering (SMF) table:
Router# show pxf cpu tbridge
Bridge-group Virtual Interface SMF table ========================================
SMF Entry Mac Address SMF MATCH BVI Flags
1 0000.0000.0000 0 0x0
2 0000.0000.0000 0 0x0
3 0000.0000.0000 0 0x0
4 0000.0000.0000 0 0x0
5 0000.0000.0000 0 0x0
6 0000.0000.0000 0 0x0
7 0000.0000.0000 0 0x0
8 0000.0000.0000 0 0x0
9 0000.0000.0000 0 0x0
!Entry for BVI 10.
10 0000.0c09.6504 0 0x1
!Bridged packets.
11 0000.0000.0000 0 0x0001
12 0000.0000.0000 0 0x0
13 0000.0000.0000 0 0x0
14 0000.0000.0000 0 0x0
15 0000.0000.0000 0 0x0
16 0000.0000.0000 0 0x0
17 0000.0000.0000 0 0x0
!Routed packets.
18 0000.0000.0000 0 0x0100
19 0000.0000.0000 0 0x0
20 0000.0000.0000 0 0x0
.
.
Related Commands
show rif
To display the current contents of the Routing Information Field (RIF) cache, use the show rif command in privileged EXEC mode.
show rif
Syntax Description
This command has no arguments or keywords.
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show rif command:
Router# show rif
Codes: * interface, - static, + remote
Hardware Addr How Idle (min) Routing Information Field
5C02.0001.4322 rg5 - 0630.0053.00B0
5A00.0000.2333 TR0 3 08B0.0101.2201.0FF0
5B01.0000.4444 - - -
0000.1403.4800 TR1 0 -
0000.2805.4C00 TR0 * -
0000.2807.4C00 TR1 * -
0000.28A8.4800 TR0 0 -
0077.2201.0001 rg5 10 0830.0052.2201.0FF0
In the display, entries marked with an asterisk (*) are the router's interface addresses. Entries marked with a dash (-) are static entries. Entries with a number denote cached entries. If the RIF timeout is set to something other than the default of 15 minutes, the timeout is displayed at the top of the display. Table 27 describes the significant fields shown in the display.
Related Commands
|
|
|
|---|---|
multiring |
Enables collection and use of RIF information. |
show source-bridge
To display the current source bridge configuration and miscellaneous statistics, use the show source-bridge command in privileged EXEC mode.
show source-bridge [interface]
Syntax Description
Command Modes
Privileged EXEC
Command History
Examples
The following is sample output from the show source-bridge command:
Router# show source-bridge
Local Interfaces: receive transmit
srn bn trn r p s n max hops cnt cnt drops
TR0 5 1 10 * * 7 39:1002 23:62923
Ring Group 10:
This peer: TCP 10.136.92.92
Maximum output TCP queue length, per peer: 100
Peers: state lv pkts_rx pkts_tx expl_gn drops TCP
TCP 10.136.92.92 - 2 0 0 0 0 0
TCP 10.136.93.93 open 2* 18 18 3 0 0
Rings:
bn: 1 rn: 5 local ma: 4000.3080.844b TokenRing0 fwd: 18
bn: 1 rn: 2 remote ma: 4000.3080.8473 TCP 10.136.93.93 fwd: 36
Explorers: ------- input ------- ------- output -------
spanning all-rings total spanning all-rings total
TR0 0 3 3 3 5 8
The following is sample output from the show source-bridge command when Token Ring LAN emulation (LANE) is configured.
Router# show source-bridge
Local Interfaces: receive transmit
srn bn trn r p s n max hops cnt cnt drops
AT2/0.1 2048 5 256 * f 7 7 7 5073 5072 0
To3/0/0 1 1 256 * f 7 7 7 4719 4720 0
Global RSRB Parameters:
TCP Queue Length maximum: 100
Ring Group 256:
No TCP peername set, TCP transport disabled
Maximum output TCP queue length, per peer: 100
Rings:
bn: 5 rn: 2048 local ma: 4000.0ca0.5b40 ATM2/0.1 fwd: 5181
bn: 1 rn: 1 local ma: 4000.3005.da06 TokenRing3/0/0 fwd: 5180
Explorers: ------- input ------- ------- output -------
spanning all-rings total spanning all-rings total
AT2/0.1 9 1 10 10 0 10
To3/0/0 10 0 10 9 1 10
Local: fastswitched 20 flushed 0 max Bps 38400
rings inputs bursts throttles output drops
To3/0/0 10 0 0 0
The following is sample output from the show source-bridge command with the interface keyword specified:
Router# show source-bridge interface
v p s n r Packets
Interface St MAC-Address srn bn trn r x p b c IP-Address In Out
To0/0 up 0000.300a.7c06 1 1 2009 * b F 10.2.0.9 63836 75413
To0/1 up 0000.300a.7c86 2 1 2009 * b F 10.1.0.9 75423 63835
To0/2 up 0000.300a.7c46 1001 1 2009 * b F 5845 5845
Table 28 describes the significant fields shown in the displays.
show span
To display the spanning-tree topology known to the router, use the show span command in user EXEC or privileged EXEC mode.
show span
Syntax Description
This command has no arguments or keywords.
Command Modes
User EXEC
Privileged EXEC
Command History
Examples
The following is sample output from the show span command:
Router# show span
Bridge Group 1 is executing the IBM compatible Spanning Tree Protocol
Bridge Identifier has priority 32768, address 0000.0c0c.f68b
Configured hello time 2, max age 6, forward delay 4
Current root has priority 32768, address 0000.0c0c.f573
Root port is 001A (TokenRing0/0), cost of root path is 16
Topology change flag not set, detected flag not set
Times: hold 1, topology change 30, notification 30
hello 2, max age 6, forward delay 4, aging 300
Timers: hello 0, topology change 0, notification 0
Port 001A (TokenRing0/0) of bridge group 1 is forwarding. Path cost 16
Designated root has priority 32768, address 0000.0c0c.f573
Designated bridge has priority 32768, address 0000.0c0c.f573
Designated port is 001B, path cost 0, peer 0
Timers: message age 1, forward delay 0, hold 0
Port 002A (TokenRing0/1) of bridge group 1 is blocking. Path cost 16
Designated root has priority 32768, address 0000.0c0c.f573
Designated bridge has priority 32768, address 0000.0c0c.f573
Designated port is 002B, path cost 0, peer 0
Timers: message age 0, forward delay 0, hold 0
Port 064A (spanRSRB) of bridge group 1 is disabled. Path cost 250
Designated root has priority 32768, address 0000.0c0c.f573
Designated bridge has priority 32768, address 0000.0c0c.f68b
Designated port is 064A, path cost 16, peer 0
Timers: message age 0, forward delay 0, hold 0
A port (spanRSRB) is created with each virtual ring group. The port will be disabled until one or more peers go into open state in the ring group.
show spanning-tree
To display spanning-tree information for the specified spanning-tree instances, use the show spanning-tree command in privileged EXEC mode.
Cisco 2600, 3660, and 3845 Series Switches
show spanning-tree [bridge-group] [active | backbonefast | blockedports | bridge | brief | inconsistentports | interface interface-type interface-number| root | summary [totals] | uplinkfast | vlan vlan-id]
Cisco 6500/6000 Catalyst Series Switches and Cisco 7600 Series Routers
show spanning-tree [bridge-group | active | backbonefast | bridge [id] | detail | inconsistentports | interface interface-type interface-number [portfast [edge]] | mst [list | configuration [digest]] | root | summary [totals] | uplinkfast | vlan vlan-id | port-channel number | pathcost method]
Syntax Description
Command Modes
Privileged EXEC (#)
Command History
Usage Guidelines
The keywords and arguments that are available with the show spanning-tree command vary depending on the platform you are using and the network modules that are installed and operational.
Cisco 2600, 3660, and 3845 Series Switches
The valid values for interface interface-type are:
•fastethernet—Specifies a Fast Ethernet IEEE 802.3 interface.
•port-channel—Specifies an Ethernet channel of interfaces.
Cisco 6500/6000 Catalyst Switches and 7600 Series Routers
The port-channel number values from 257 to 282 are supported on the Content Switching Module (CSM) and the Firewal Services Module (FWSM) only.
The interface-number argument designates the module and port number. Valid values for interface-number depend on the specified interface type and the chassis and module that are used. For example, if you specify a Gigabit Ethernet interface and have a 48-port 10/100BASE-T Ethernet module that is installed in a 13-slot chassis, valid values for the module number are from 2 to 13 and valid values for the port number are from 1 to 48.
When checking spanning tree-active states and you have a large number of VLANs, you can enter the show spanning-tree summary total command. You can display the total number of VLANs without having to scroll through the list of VLANs.
The valid values for interface interface-type are:
•fastethernet—Specifies a Fast Ethernet IEEE 802.3 interface.
•port-channel—Specifies an Ethernet channel of interfaces.
•atm—Specifies an Asynchronous Transfer Mode (ATM) interface.
•gigabitethernet—Specifies a Gigabit Ethernet IEEE 802.3z interface.
•multilink—Specifies a multilink-group interface.
•serial—Specifies a serial interface.
•vlan—Specifies a catalyst VLAN interface.
The valid values for keyword pathcoast method are:
•append—Appends the redirected output to a URL (supporting the append operation).
•begin—Begins with the matching line.
•exclude—Excludes matching lines.
•include—Includes matching lines.
•redirect—Redirects output to a URL.
•tee—Copies output to a URL.
When you run the show spanning-tree command for a VLAN or an interface the switch router will display the different port states for the VLAN or interface. The valid spanning-tree port states are listening, learning, forwarding, blocking, disabled, and loopback. See Table 29 for definitions of the port states:
Examples
Cisco 2600, 3660, and 3845 Series Switches
The following example shows that bridge group 1 is running the VLAN Bridge Spanning Tree Protocol:
Router# show spanning-tree 1
Bridge group 1 is executing the VLAN Bridge compatible Spanning Tree Protocol
Bridge Identifier has priority 32768, address 0000.0c37.b055
Configured hello time 2, max age 30, forward delay 20
We are the root of the spanning tree
Port Number size is 10 bits
Topology change flag not set, detected flag not set
Times: hold 1, topology change 35, notification 2
hello 2, max age 30, forward delay 20
Timers: hello 0, topology change 0, notification 0
bridge aging time 300
Port 8 (Ethernet1) of Bridge group 1 is forwarding
Port path cost 100, Port priority 128
Designated root has priority 32768, address 0000.0c37.b055
Designated bridge has priority 32768, address 0000.0c37.b055
Designated port is 8, path cost 0
Timers: message age 0, forward delay 0, hold 0
BPDU: sent 184, received 0
The following is sample output from the show spanning-tree summary command:
Router# show spanning-tree summary
UplinkFast is disabled
Name Blocking Listening Learning Forwarding STP Active
-------------------- -------- --------- -------- ---------- ----------
VLAN1 23 0 0 1 24
-------------------- -------- --------- -------- ---------- ----------
1 VLAN 23 0 0 1 24
Table 30 describes the significant fields shown in the display.
The following is sample output from the show spanning-tree brief command:
Router# show spanning-tree brief
VLAN1
Spanning tree enabled protocol IEEE
ROOT ID Priority 32768
Address 0030.7172.66c4
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
VLAN1
Spanning tree enabled protocol IEEE
ROOT ID Priority 32768
Address 0030.7172.66c4
Port Designated
Name Port ID Prio Cost Sts Cost Bridge ID Port ID
------- ------- ---- ---- --- ---- -------------- -------
Fa0/11 128.17 128 100 BLK 38 0404.0400.0001 128.17
Fa0/12 128.18 128 100 BLK 38 0404.0400.0001 128.18
Fa0/13 128.19 128 100 BLK 38 0404.0400.0001 128.19
Fa0/14 128.20 128 100 BLK 38 0404.0400.0001 128.20
Fa0/15 128.21 128 100 BLK 38 0404.0400.0001 128.21
Fa0/16 128.22 128 100 BLK 38 0404.0400.0001 128.22
Fa0/17 128.23 128 100 BLK 38 0404.0400.0001 128.23
Fa0/18 128.24 128 100 BLK 38 0404.0400.0001 128.24
Fa0/19 128.25 128 100 BLK 38 0404.0400.0001 128.25
Fa0/20 128.26 128 100 BLK 38 0404.0400.0001 128.26
Fa0/21 128.27 128 100 BLK 38 0404.0400.0001 128.27
Port Designated
Name Port ID Prio Cost Sts Cost Bridge ID Port ID
------- ------- ---- ---- --- ---- -------------- -------
Fa0/22 128.28 128 100 BLK 38 0404.0400.0001 128.28
Fa0/23 128.29 128 100 BLK 38 0404.0400.0001 128.29
Fa0/24 128.30 128 100 BLK 38 0404.0400.0001 128.30 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Table 31 describes the significant fields shown in the display.
The following is sample output from the show spanning-tree vlan 1 command:
Router# show spanning-tree vlan 1
Spanning tree 1 is executing the IEEE compatible Spanning Tree protocol
Bridge Identifier has priority 32768, address 00e0.1eb2.ddc0
Configured hello time 2, max age 20, forward delay 15
Current root has priority 32768, address 0010.0b3f.ac80
Root port is 5, cost of root path is 10
Topology change flag not set, detected flag not set, changes 1
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 0, topology change 0, notification 0
Interface Fa0/1 in Spanning tree 1 is down
Port path cost 100, Port priority 128
Designated root has priority 32768, address 0010.0b3f.ac80
Designated bridge has priority 32768, address 00e0.1eb2.ddc0
Designated port is 1, path cost 10
Timers: message age 0, forward delay 0, hold 0
BPDU: sent 0, received 0
Table 32 describes the significant fields shown in the display.
The following is sample output from the show spanning-tree interface fastethernet0/3 command:
Router# show spanning-tree interface fastethernet0/3
Interface Fa0/3 (port 3) in Spanning tree 1 is down
Port path cost 100, Port priority 128
Designated root has priority 6000, address 0090.2bba.7a40
Designated bridge has priority 32768, address 00e0.1e9f.4abf
Designated port is 3, path cost 410
Timers: message age 0, forward delay 0, hold 0
BPDU: sent 0, received 0
Cisco 6500/6000 Series Catalyst Switches and 7600 Series Routers
This example shows how to display a summary of interface information:
Router# show spanning-tree
VLAN0001
Spanning tree enabled protocol ieee
Root ID Priority 4097
Address 0004.9b78.0800
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 4097 (priority 4096 sys-id-ext 1)
Address 0004.9b78.0800
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 15
Interface Port ID Designated Port ID
Name Prio.Nbr Cost Sts Cost Bridge ID Prio.Nbr
---------------- -------- --------- --- --------- -------------------- --------
Gi2/1 128.65 4 LIS 0 4097 0004.9b78.0800 128.65
Gi2/2 128.66 4 LIS 0 4097 0004.9b78.0800 128.66
Fa4/3 128.195 19 LIS 0 4097 0004.9b78.0800 128.195
Fa4/4 128.196 19 BLK 0 4097 0004.9b78.0800 128.195
Router#
Table 33 describes the fields that are shown in the example.
|
|
|
|---|---|
Port ID Prio.Nbr |
Port ID and priority number. |
Cost |
Port cost. |
Sts |
Status information. |
This example shows how to display information about the spanning tree on active interfaces only:
Router# show spanning-tree active
UplinkFast is disabled
BackboneFast is disabled
VLAN1 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 32768, address 0050.3e8d.6401
Configured hello time 2, max age 20, forward delay 15
Current root has priority 16384, address 0060.704c.7000
Root port is 265 (FastEthernet5/9), cost of root path is 38
Topology change flag not set, detected flag not set
Number of topology changes 0 last change occurred 18:13:54 ago
Times: hold 1, topology change 24, notification 2
hello 2, max age 14, forward delay 10
Timers: hello 0, topology change 0, notification 0
Router#
This example shows how to display the status of spanning-tree BackboneFast:
Router# show spanning-tree backbonefast
BackboneFast is enabled
BackboneFast statistics
-----------------------
Number of transition via backboneFast (all VLANs) : 0
Number of inferior BPDUs received (all VLANs) : 0
Number of RLQ request PDUs received (all VLANs) : 0
Number of RLQ response PDUs received (all VLANs) : 0
Number of RLQ request PDUs sent (all VLANs) : 0
Number of RLQ response PDUs sent (all VLANs) : 0
Router#
This example shows how to display information about the spanning tree for this bridge only:
Router# show spanning-tree bridge
VLAN1
Bridge ID Priority 32768
Address 0050.3e8d.6401
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
.
Router#
This example shows how to display detailed information about the interface:
Router# show spanning-tree detail
VLAN1 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 4096, address 00d0.00b8.1401
Configured hello time 2, max age 20, forward delay 15
We are the root of the spanning tree
Topology change flag not set, detected flag not set
Number of topology changes 9 last change occurred 02:41:34 ago
from FastEthernet4/21
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 1, topology change 0, notification 0, aging 300
Port 213 (FastEthernet4/21) of VLAN1 is forwarding
Port path cost 19, Port priority 128, Port Identifier 128.213.
Designated root has priority 4096, address 00d0.00b8.1401
Designated bridge has priority 4096, address 00d0.00b8.1401
Designated port id is 128.213, designated path cost 0
Timers: message age 0, forward delay 0, hold 0
Number of transitions to forwarding state: 1
BPDU: sent 4845, received 1
Router#
This example shows how to display information about the spanning tree for a specific interface:
Router# show spanning-tree interface fastethernet 5/9
Interface Fa0/10 (port 23) in Spanning tree 1 is ROOT-INCONSISTENT Port path cost 100, Port priority 128 Designated root has priority 8192, address 0090.0c71.a400 Designated bridge has priority 32768, address 00e0.1e9f.8940
This example shows how to display information about the spanning tree for a specific bridge group:
Router# show spanning-tree 1
UplinkFast is disabled
BackboneFast is disabled
Bridge group 1 is executing the ieee compatible Spanning Tree protocol
Bridge Identifier has priority 32768, address 00d0.d39c.004d
Configured hello time 2, max age 20, forward delay 15
Current root has priority 32768, address 00d0.d39b.fddd
Root port is 7 (FastEthernet2/2), cost of root path is 19
Topology change flag set, detected flag not set
Number of topology changes 3 last change occurred 00:00:01 ago
from FastEthernet2/2
Times: hold 1, topology change 35, notification 2
hello 2, max age 20, forward delay 15
Timers: hello 0, topology change 0, notification 0 bridge aging time 15
Port 2 (Ethernet0/1/0) of Bridge group 1 is down
Port path cost 100, Port priority 128
Designated root has priority 32768, address 0050.0bab.1808
Designated bridge has priority 32768, address 0050.0bab.1808
Designated port is 2, path cost 0
Timers: message age 0, forward delay 0, hold 0
BPDU: sent 0, received 0
Router#
This example shows how to display a summary of port states:
Router# show spanning-tree summary
Root bridge for: Bridge group 1, VLAN0001, VLAN0004-VLAN1005
VLAN1013-VLAN1499, VLAN2001-VLAN4094
EtherChannel misconfiguration guard is enabled
Extended system ID is enabled
Portfast is enabled by default
PortFast BPDU Guard is disabled by default
Portfast BPDU Filter is disabled by default
Loopguard is disabled by default
UplinkFast is disabled
BackboneFast is disabled
Pathcost method used is long
Name Blocking Listening Learning Forwarding STP Active
---------------------- -------- --------- -------- ---------- ----------
1 bridge 0 0 0 1 1
3584 vlans 3584 0 0 7168 10752
Blocking Listening Learning Forwarding STP Active
---------------------- -------- --------- -------- ---------- ----------
Total 3584 0 0 7169 10753
Router#
This example shows how to display the total lines of the spanning-tree state section:
Router# show spanning-tree summary total
Root bridge for:Bridge group 10, VLAN1, VLAN6, VLAN1000.
Extended system ID is enabled.
PortFast BPDU Guard is disabled
EtherChannel misconfiguration guard is enabled
UplinkFast is disabled
BackboneFast is disabled
Default pathcost method used is long
Name Blocking Listening Learning Forwarding STP Active
-------------------- -------- --------- -------- ---------- ----------
105 VLANs 3433 0 0 105 3538
BackboneFast statistics
-----------------------
Number of transition via backboneFast (all VLANs) :0
Number of inferior BPDUs received (all VLANs) :0
Number of RLQ request PDUs received (all VLANs) :0
Number of RLQ response PDUs received (all VLANs) :0
Number of RLQ request PDUs sent (all VLANs) :0
Number of RLQ response PDUs sent (all VLANs) :0
Router#
This example shows how to display information about the spanning tree for a specific VLAN:
Router# show spanning-tree vlan 200
VLAN0200
Spanning tree enabled protocol ieee
Root ID Priority 32768
Address 00d0.00b8.14c8
This bridge is the root
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Bridge ID Priority 32768
Address 00d0.00b8.14c8
Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec
Aging Time 300
Interface Role Sts Cost Prio.Nbr Status
---------------- ---- --- --------- -------- --------------------------------
Fa4/4 Desg FWD 200000 128.196 P2p
Fa4/5 Back BLK 200000 128.197 P2p
Router#
Table 34 describes the fields that are shown in the example.
|
|
|
|---|---|
Role |
Current 802.1w role; valid values are Boun (boundary), Desg (designated), Root, Altn (alternate), and Back (backup). |
Sts |
Spanning-tree states; valid values are BKN* (broken)1 , BLK (blocking), DWN (down), LTN (listening), LBK (loopback), LRN (learning), and FWD (forwarding). |
Cost |
Port cost. |
Prio.Nbr |
Port ID that consists of the port priority and the port number. |
Status |
Status information; valid values are as follows: • • • • • |
1 For information on the *, see the definition for the Status field. |
This example shows how to determine if any ports are in the root-inconsistent state:
Router# show spanning-tree inconsistentports
Name Interface Inconsistency
-------------------- -------------------- ------------------
VLAN1 FastEthernet3/1 Root Inconsistent
Number of inconsistent ports (segments) in the system :1
Router#
Related Commands
show spantree
To display spanning-tree information for a virtual LAN (VLAN) or port, use the show spantree command in privileged EXEC mode.
show spantree [vlan] [active]
show spantree mod/port
Syntax Description
Command Modes
Privileged EXEC
Command History
Usage Guidelines
If you do not specify the VLAN number, VLAN 1 is displayed.
If you are in Multiple Instances of Spanning Tree (MISTP) mode, instance information is not displayed.
The maximum length of the channel port list is 47. The space in the Port(s) column might not be enough to display the entire list in one line. If this is the case, the port list is split into multiple lines. For example, in the following display, ports 6/5-8, 6/13, 6/15, 6/17, 6/19 are channeling:
.
.
.
Port(s) Vlan Port-State Cost Prio Portfast Channel_id
------------------------ ---- ------------- --------- ---- -------- ----------
6/5-8,6/13,6/15,6/17,6/1 1 not-connected 2684354 32 disabled 0
9
.
.
.
The Link Aggregation Control Protocol (LACP) for channels does not support half-duplex links. If a port is in active/passive mode and becomes half duplex, the port is suspended (and a syslog message is generated).
The port is shown as "connected" if you use the show port command and as "not connected" if you use the show spantree command. This discrepancy occurs because the port is physically connected but never joined the active spanning-tree topology. To get the port to join the active spanning- tree topology, either set the duplex to full or set the channel mode to off for that port.
Examples
The following example shows how to display the active spanning tree port configuration for VLAN 1 while in Per VLAN Spanning Tree (PVST+ mode):
Router# (enable) show spantree 1 active
VLAN 1
Spanning tree mode PVST+
Spanning tree type ieee
Spanning tree enabled
Designated Root 00-60-70-4c-70-00
Designated Root Priority 16384
Designated Root Cost 19
Designated Root Port 2/3
Root Max Age 14 sec Hello Time 2 sec Forward Delay 10 sec
Bridge ID MAC ADDR 00-d0-00-4c-18-00
Bridge ID Priority 32768
Bridge Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
Port Vlan Port-State Cost Prio Portfast Channel_id
------------------------ ---- ------------- --------- ---- -------- ----------
2/3 1 forwarding 19 32 disabled 0
2/12 1 forwarding 19 32 disabled 0
The following example shows how to display the active spanning-tree port configuration for VLAN 1 (while in MISTP mode):
Router# (enable) show spantree 1 active
VLAN 1
Spanning tree mode MISTP
Spanning tree type ieee
Spanning tree enabled
VLAN mapped to MISTP Instance: 1
Port Vlan Port-State Cost Prio Portfast Channel_id
------------------------ ---- ------------- --------- ---- -------- ----------
2/3 1 forwarding 200000 32 disabled 0
2/12 1 forwarding 200000 32 disabled 0
Table 35 describes the significant fields shown in the displays.
Related Commands
show subscriber-policy
To display the details of a subscriber policy, use the show subscriber-policy command in user EXEC or privileged EXEC mode.
show subscriber-policy range
Syntax Description
range |
Range of subscriber policy numbers (range 1 to 100). |
Command Modes
User EXEC
Privileged EXEC
Command History
Examples
The following is sample output from the show subscriber-policy command:
Router# show subscriber-policy 1
ARP: Permit
Broadcast: Deny
Multicast: Permit
Unknown: Deny
STP: Disable
CDP: Disable
Related Commands
source-bridge trcrf-vlan
To attach a VLAN to the Route Switch Module (RSM)'s virtual ring when source-route bridging, use the source-bridge trcrf-vlan command in interface configuration mode. To disable the attachment of a VLAN to the RSM's virtual ring, use the no form of this command.
source-bridge trcrf-vlan vlanid ring-group ringnum
Syntax Description
vlanid |
VLAN ID number. |
ring-group ringnum |
Pseudoring number that corresponds to the virtual ring number for the interface. |
Defaults
No default behavior or values
Command Modes
Interface configuration
Command History
Usage Guidelines
Use the source-bridge ring-group command to create a virtual ring for source-route bridging (SRB) between Token Ring Bridge Relay Function (TrBRF) VLANs. Use the source-bridge trcrf-vlan command to assign a Token Ring Concentrator Relay Function (TrCRF) VLAN ID to the virtual ring.
In SRB and source-route translational bridging (SR/TLB), define a unique TrCRF VLAN ID that corresponds to the virtual ring on the RSM for each TrBRF. Although the VLAN ID for the TrCRF is unique for each TrBRF, the ring number will be the same.
If IP or IPX routing source routing (SR) frames is required on a TrBRF interface configured for SRB, you must also define a pseudoring for this interface with the multiring trcrf-vlan command. In this case, the VLAN ID used for the TrCRF that corresponds to the virtual ring can be the same as the one used for the pseudoring. If the VLAN IDs are different, the virtual ring and pseudoring numbers must be different.
Examples
The following example shows both SRB and IP routing for SR frames:
source-bridge ring-group 100
interface Token Ring3/1
source-bridge 10 1 100
source-bridge spanning
!
interface vlan999 type trbrf source-bridge trcrf-vlan 400 ring-group 100
source-bridge spanning
multiring all
multiring trcrf-vlan 400 ring-group 100
Note that the ring number must be the same for the source-bridge ring-group, source-bridge, and source-bridge trcrf-vlan commands. In this example, the ring number of the pseudoring also matches the virtual ring number.
Related Commands
spanning-tree portfast (interface mode)
To enable PortFast on a specific interface, use the spanning-tree portfast command in interface configuration mode. To disable PortFast, use the no form of this command.
spanning-tree portfast {disable | trunk}
no spanning-tree portfast
Syntax Description
disable |
Disables PortFast on the interface. |
trunk |
Enables PortFast on the interface when it is in trunk mode. |
Command Default
Portfast on an interface defaults to the state of portfast on the device.
Command Modes
Interface configuration (config-if)
Command History
Usage Guidelines
Use this command only with interfaces that connect to end stations; otherwise, an accidental data-packet loop could form that disrupts operations of both the Cisco 7600 series router and the network.
An interface with PortFast mode enabled moves directly to the spanning-tree forwarding state when linkup occurs. No waiting for the standard forward-time delay is required.
The spanning-tree portfast command has four states:
•spanning-tree portfast—Enables PortFast unconditionally on the given port.
•spanning-tree portfast disable—Explicitly disables PortFast for the given port. The configuration line displays in the running configuration because it is not the default.
•spanning-tree portfast trunk—Allows you to configure PortFast on trunk ports. When you enter this command, the port is configured for PortFast even in the access mode.
•no spanning-tree portfast—Implicitly enables PortFast if you define the spanning-tree portfast default command in global configuration mode and if the port is not a trunk port. If you do not configure PortFast globally, the no spanning-tree portfast command is equivalent to the spanning-tree portfast disable command.
The no spanning-tree portfast command does not disable PortFast if the spanning-tree portfast default command is enabled.
Examples
The following example shows how to enable PortFast on an interface:
Router(config-if)# spanning-tree portfast
Related Commands
|
|
|
|---|---|
show spanning-tree |
Displays information about the spanning-tree state. |
spanning-tree portfast default |
Enables PortFast by default on all access ports. |
Feedback