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Multiple Spanning Tree Protocol Commands
For detailed information about MSTP concepts, configuration tasks, and examples, see the
Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide.
- bridge-id
- bringup delay
- clear ethernet mvrp statistics
- cost
- debug ethernet mvrp packets
- debug ethernet mvrp protocol
- debug spanning-tree mst packet
- debug spanning-tree mst protocol-state
- debug spanning-tree mstag packet
- debug spanning-tree packet raw
- debug spanning-tree pvrstag packet
- debug spanning-tree pvstag packet
- debug spanning-tree repag packet
- edge-mode
- external-cost (MSTAG/REPAG)
- external-cost (MSTP)
- flush containment disable
- forward-delay
- guard root
- guard topology-change
- hello-time (Access Gateway)
- hello-time (MSTP)
- instance (MSTAG/REPAG)
- instance (MSTP)
- instance cost
- instance port-priority
- interface (MSTAG/REPAG)
- interface (MSTP)
- interface (PVSTAG/PVRSTAG)
- join-time
- leave-time
- leaveall-time
- link-type
- max age
- maximum age
- maximum hops (MSTP)
- mvrp static
- name (MSTAG/REPAG)
- name (MSTP)
- periodic transmit
- port-id
- port-priority
- portfast
- preempt delay
- priority (Access Gateway)
- priority (MSTP)
- provider-bridge (MSTAG/REPAG)
- provider-bridge (MSTP)
- revision (MSTAG/REPAG)
- revision (MSTP)
- root-cost
- root-id
- root-priority
- show ethernet mvrp mad
- show ethernet mvrp statistics
- show ethernet mvrp status
- show l2vpn mstp port
- show l2vpn mstp vlan
- show spanning-tree mst
- show spanning-tree mst bpdu interface
- show spanning-tree mst configuration
- show spanning-tree mst errors
- show spanning-tree mst interface
- show spanning-tree mst topology-change flushes
- show spanning-tree mstag
- show spanning-tree mstag bpdu interface
- show spanning-tree mstag topology-change flushes
- show spanning-tree pvrstag
- show spanning-tree pvstag
- show spanning-tree repag
- show spanning-tree repag bpdu interface
- show spanning-tree repag topology-change flushes
- spanning-tree mst
- spanning-tree mstag
- spanning-tree pvrstag
- spanning-tree pvstag
- spanning-tree repag
- transmit hold-count
- vlan
- vlan-ids (MSTAG/REPAG)
- vlan-id (MSTP)
bridge-id
To set the bridge ID for this device for an Access Gateway instance, use the bridge-id command in MSTAG interface configuration, REPAG Interface configuration, PVSTAG VLAN configuration, or PVRSTAG VLAN configuration submode.
Syntax Description
id MAC address of the switch. It can be any 48-bit value.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-id Sets the startup bridge ID.
Command Default
For MSTAG/REPAG, the MAC address of the switch. For PVSTAG/PVRSTAG, the interface MAC address.
If no startup value is specified, the normal value is used during startup.
Command Modes
MSTAG interface configuration, REPAG Interface configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG VLAN configuration and PVRSTAG VLAN configuration submodes.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
When configuring access gateway, this command is used to modify the value of the bridge ID that is advertised in the STP BPDUs.
Task ID
Task ID
Operations
interface ( for MSTAG/REPAG)
read, write
ethernet-services ( for PVSTAG/PVRSTAG)
read, write
Examples
The following example shows how to set the bridge ID:
RP/0/RSP0/CPU0:router(config-mstag-if)# bridge-id 001c.0000.0011Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
bringup delay
To configure a delay when an interface is first created before it is added to the MSTP topology, use the bringup delay command in the MSTP configuration mode.
bringup delay for interval { seconds | minutes | hours }
no bringup delay for interval { seconds | minutes | hours }
Syntax Description
interval Length of time to delay adding the interface to the MSTP topology.
seconds Specifies the delay in seconds.
minutes Specifies the delay in minutes.
hours Specifies the delay in hours.
Command Default
If no bringup delay is configured, interfaces are added to the MSTP topology as soon as they are created.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command is used to change the behaviour of MSTP when interfaces are first functional (for example, when a line card boots for the first time). By default, interfaces are added to the MSTP topology, and may be placed in the forwarding state, as soon as the system declares that the interfaces are functional. However, at this point the data plane may not be fully prepared to forward traffic on the interface. If a bringup delay is configured, MSTP keeps the interface in blocked state for the specified delay, and adds it to the MSTP topology only after the specified interval has occurred.
For information on configuring bringup delay, refer to the Implementing Multiple Spanning Tree Protocol module of the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide.
Task ID
Examples
The following example shows how to configure the bringup delay:
RP/0/RSP0/CPU0:router# configure RP/0/RSP0/CPU0:router(config)#spanning-tree mst A RP/0/RSP0/CPU0:router(config-mstp)# bringup delay for 20 secondsclear ethernet mvrp statistics
To clear MVRP statistics for ethernet interfaces, use the clear ethernet mvrp statistics command in the EXEC mode.
Syntax Description
interface (Optional) Clears the MVRP statistics for the given interface.
type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
location Clears MVRP statistics for interfaces in a particular location.
location Specifies the fully qualified location.
all Clears the MVRP statistics for all interfaces.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to configure the bringup delay:
RP/0/RSP0/CPU0:router# clear ethernet mvrp statistics allcost
To set the internal path cost for a given instance on the current port, use the cost command in MSTAG interface instance or REPAG interface instance configuration submode.
Syntax Description
cost Port cost. Range is 1 to 200000000.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-id Sets the startup internal path cost.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command is used when configuring Access Gateway, to change the cost value that is advertised for this MSTI in the STP BPDUs.
NoteMSTP cost for bundle interfaces is fixed to 10000 and does not depend on the number of interfaces and the speed of individual members.
Task ID
Examples
The following example shows how to set the port cost to 10000:
RP/0/RSP0/CPU0:router(config-mstag-if-inst)# cost 10000Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
debug ethernet mvrp packets
To enable debugging of sent and received MVRP packets, use the debug ethernet mvrp packets command in the EXEC mode. To disable debugging, use the no form of this command.
debug ethernet mvrp packets { brief | full | hexdump } [ direction { received | sent } ] [ interface interface-name | location node-id ]
no debug ethernet mvrp packets { brief | full | hexdump } [ direction { received | sent } ] [ interface interface-name | location node-id ]
Syntax Description
brief Enables brief debugging output.
full Enables full debugging output.
hexdump Enables full debugging output along with the raw contexts of the packet in hex.
direction {Optional} Restricts output to a packet direction.
received Indicates packets received.
sent Indicates packets sent.
interface interface-name {Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
location node-id (Optional) Indicates the location. The node-id argument is entered in the rack/slot/module notation.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable debugging of brief MVRP packets:
RP/0/RSP0/CPU0:router#debug ethernet mvrp packets brief Thu Oct 28 02:56:35.048 DSTThe following example shows how to enable debugging of full MVRP packets on a specific location:
RP/0/RSP0/CPU0:router#debug ethernet mvrp packets full location 0/0/CPU0 Mon Nov 15 20:02:13.636 PSTThe following example shows how to enable debugging of brief MVRP packets received at a specific interface:
RP/0/RSP0/CPU0:router#debug ethernet mvrp packets brief direction received interface gigabitEthernet 0/0/0/1 Thu Nov 25 21:09:01.986 PSTRelated Commands
Command
Description
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
debug ethernet mvrp protocol
To enable MVRP protocol debugging on a specific interface, location or vlan, use the debug ethernet mvrp protocol command in the EXEC mode. To disable debugging, use the no form of this command.
debug ethernet mvrp protocol [ vlan vlan-id ] [ interface interface-name | location node-id ]
no debug ethernet mvrp protocol [ vlan vlan-id ] [ interface interface-name | location node-id ]
Syntax Description
vlan vlan-id
{Optional} Specific vlan-id to filter on.
interface interface-name
{Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
location node-id
(Optional) Indicates the location. The node-id argument is entered in the rack/slot/module notation.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to debug an ethernet mvrp protocol:
RP/0/RSP0/CPU0:router#debug ethernet mvrp protocol Thu Oct 28 03:05:21.575 DST RP/0/RSP0/CPU0:router#debug ethernet mvrp protocol location 0/0/CPU0 Mon Nov 15 20:11:56.607 PST RP/0/RSP0/CPU0:router#debug ethernet mvrp protocol interface gigabitEthernet 0/0/0/1 Mon Nov 15 20:12:49.776 PSTRelated Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
debug spanning-tree mst packet
To enable debugging for sent and received MSTP packets, use the debug spanning-tree mst packet command in the EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree mst packet { brief | full } { sent | received } [ interface interface-name ]
no debug spanning-tree mst packet { brief | full } { sent | received } [ interface interface-name ]
Syntax Description
brief Enables brief debugging output.
full Enables full debugging output.
sent Display packets being sent.
received Display packets being received.
interface interface-name
{Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable brief debugging for received packets:
RP/0/RSP0/CPU0:router#debug spanning-tree mst packet brief received Mon Nov 15 20:42:58.584 PSTThe following example shows how to enable brief debugging for received packets at a specific location:
RP/0/RSP0/CPU0:router#debug spanning-tree mst packet brief received location 0/0/CPU0 Mon Nov 15 20:44:15.082 PSTThe following example shows how to enable brief debugging for received packets on a specific interface:
RP/0/RSP0/CPU0:router#debug spanning-tree mst packet brief received interface gigabitEthernet 0/0/0/1 Mon Nov 15 20:45:40.047 PSTRelated Commands
Command
Description
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enables debugging raw packet output for all received packets or sent packets.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
debug spanning-tree mst protocol-state
To enable debugging protocol-state changes such as port role or state changes, topology change notification, use the debug spanning-tree mst protocol-state command in EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree mst protocol-state [ instance instance-id ] [ interface interface-name ]
no debug spanning-tree mst protocol-state [ instance instance-id ] [ interface interface-name ]
Syntax Description
instance instance-id
View debug for a specific MSTI.
interface interface-name
View debug for a specific interface.
Command Default
If no instance or interface is specified, debug is enabled for all instances and interfaces.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable protocol state debugging:
RP/0/RSP0/CPU0:router#debug spanning-tree mst protocol-state Mon Nov 15 20:53:52.793 PST RP/0/RSP0/CPU0:router#debug spanning-tree mst protocol-state interface gigabitEthernet 0/0/0/1 Mon Nov 15 20:54:57.310 PST RP/0/RSP0/CPU0:router#debug spanning-tree mst protocol-state instance 4094 Mon Nov 15 20:59:35.860 PSTdebug spanning-tree mstag packet
To enable MSTAG packet debugging, use the debug spanning-tree mstag packet command in EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree mstag packet { brief | full } { sent | received } [ interface interface-name ]
no debug spanning-tree mstag packet { brief | full } { sent | received } [ interface interface-name ]
Syntax Description
brief Enables brief debugging output.
full Enables full debugging output.
received Display packets being received.
sent Display packets being sent.
interface interface-name
{Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable MSTAG packet debugging:
RP/0/RSP0/CPU0:router#debug spanning-tree mstag packet brief received Mon Nov 15 21:11:30.464 PST RP/0/RSP0/CPU0:router#debug spanning-tree mstag packet full sent interface gigabitEthernet 0/0/0/1 Mon Nov 15 21:12:23.391 PSTdebug spanning-tree packet raw
To enable debugging raw packet output for all received packets or sent packets, use the debug spanning-tree packet raw command in EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree packet raw { sent | received } [ interface interface-name ]
no debug spanning-tree packet raw { sent | received } [ interface interface-name ]
Syntax Description
received Display packets being received.
sent Display packets being sent.
interface interface-name
{Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command enables raw packet debug for all STP protocols: MSTP, MSTAG, REPAG, PVSTAG and PVRSTAG.
Task ID
Examples
The following example shows how to enable debugging raw packet output for packets received at a specific location:
RP/0/RSP0/CPU0:router#debug spanning-tree packet raw received location 0/0/CPU0 Mon Nov 15 21:16:42.570 PSTThe following example shows how to enable debugging raw packet output for packets sent from a specific interface:
RP/0/RSP0/CPU0:router#debug spanning-tree packet raw sent interface gigabitEthernet 0/0/0/1 Mon Nov 15 21:17:43.303 PSTRelated Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enters the MSTP configuration submode
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
debug spanning-tree pvrstag packet
To enable packet debugging for sent and received PVRSTAG packets, use the debug spanning-tree pvrstag packet command in EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree pvrstag packet { brief | full } { sent | received } [ interface interface-name ]
no debug spanning-tree pvrstag packet { brief | full } { sent | received } [ interface interface-name ]
Syntax Description
brief Enables brief debugging output.
full Enables full debugging output.
sent Indicates packets sent.
received Indicates packets received.
interface interface-name
{Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable packet debugging for PVRSTAG packets received at a specific interface:RP/0/RSP0/CPU0:router#debug spanning-tree pvrstag packet brief received interface gigabitEthernet 0/0/0/1 Wed Nov 24 22:12:33.861 PSTThe following example shows how to enable packet debugging for PVRSTAG packets sent from a specific interface:RP/0/RSP0/CPU0:router#debug spanning-tree pvrstag packet brief sent interface gigabitEthernet 0/0/0/1 Wed Nov 24 22:15:12.893 PSTdebug spanning-tree pvstag packet
To enable packet debugging for sent and received PVSTAG packets, use the debug spanning-tree pvstag packet command in EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree pvstag packet { brief | full } { sent | received } [ interface interface-name ]
no debug spanning-tree pvstag packet { brief | full } { sent | received } [ interface interface-name ]
Syntax Description
brief Enables brief debugging output.
full Enables full debugging output.
sent Indicates packets sent.
received Indicates packets received.
interface interface-name
{Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable packet debugging for PVSTAG packets received at a specific interface:
RP/0/RSP0/CPU0:router#debug spanning-tree pvstag packet brief received interface gigabitEthernet 0/0/0/1 Wed Nov 24 22:12:33.861 PSTThe following example shows how to enable packet debugging for PVSTAG packets sent from a specific interface:
RP/0/RSP0/CPU0:router#debug spanning-tree pvstag packet brief sent interface gigabitEthernet 0/0/0/1 Wed Nov 24 22:15:12.893 PSTdebug spanning-tree repag packet
To enable Resilient Ethernet Protocol (REP) Access Gateway debugging commands, use the debug spanning-tree repag packet command in the EXEC mode. To disable debugging, use the no form of this command.
debug spanning-tree repag packet { brief | full } { sent | received } [ interface interface-name ]
no debug spanning-tree repag packet { brief | full } { sent | received } [ interface interface-name ]
Syntax Description
brief Enables brief debugging output.
full Enables full debugging output.
received Display packets being received.
sent Display packets being sent.
interface interface-name
{Optional} Filters by interface.
Physical interface or a virtual interface.
Note Use the show interfaces command to see a list of all possible interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable brief debug for REP Access Gateway packets received at a specified interface.
RP/0/RSP0/CPU0:router#debug spanning-tree repag packet brief received interface gigabitEthernet 0/0/0/1 Mon Nov 15 21:26:08.155 PSTThe following example shows how to enable full debug for REP Access Gateway packets sent from a specific location:
RP/0/RSP0/CPU0:router#debug spanning-tree repag packet full sent location 0/0/CPU0 Mon Nov 15 21:27:10.674 PSTedge-mode
To enable MSTAG edge mode for Multiple Spanning Tree Instance (MSTI), use the edge-mode command in MSTAG instance configuration submode. Use the no form of this command to disable the MSTAG edge mode.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
This example shows the output from the edge-mode command:
RP/0/RSP0/CPU0:router#configure RP/0/RSP0/CPU0:router(config)#spanning-tree mstag A RP/0/RSP0/CPU0:router(config-mstag)#interface GigabitEthernet 0/2/0/1.1 RP/0/RSP0/CPU0:router(config-mstag-if)#instance 100 RP/0/RSP0/CPU0:router(config-mstag-if-inst)#edge-mode RP/0/RSP0/CPU0:router(config-mstag-if-inst)#external-cost (MSTAG/REPAG)
To set the external path cost on the current port, use the external-cost command in MSTAG interface or REPAG interface configuration submode.
Syntax Description
cost Interface external path cost. Range is 1 to 200000000.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-cost Sets the external path cost.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command is used when configuring Access Gateway, to change the external cost that it advertised in STP BPDUs sent from this interface.
Task ID
Examples
The following example shows how to set the external cost to 10000:
RP/0/RSP0/CPU0:router(config-mstag-if)# external-cost 10000Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
external-cost (MSTP)
To set the external path cost on the current port, use the external-cost command in MSTP interface configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the external cost to 10000:
RP/0/RSP0/CPU0:router:router(config-mstp-if)# external-cost 10000Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
flush containment disable
To disable the flush containment feature on a bridge, use the flush containment disable command in the MSTP configuration submode.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Flush containment is a Cisco feature that helps prevent unnecessary MAC flushes. Refer to the Implementing Multiple Spanning Tree Protocol module in the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide.
Task ID
Examples
The following example shows how to disable the flush containment feature on a bridge:
RP/0/RSP0/CPU0:router(config-mstp)# flush containment disableforward-delay
To set the forward-delay parameter for the bridge, use the forward-delay command in MSTP configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the forward-delay parameter for the bridge to 20:
RP/0/RSP0/CPU0:router(config-mstp)# forward-delay 20guard root
To prevent a port from becoming the root port for the switch, use the guard root command in MSTP interface configuration submode.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command enables the Root Guard feature on the interface, by preventing the port from becoming a root port. This feature can be used to enforce the location of the root bridge within the MSTP network. For more information on guard root feature, refer to the Implementing Multiple Spanning Tree Protocol module in the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide.
Task ID
Examples
The following example shows how to enable RootGuard on the port:
RP/0/RSP0/CPU0:router(config-mstp-if)# guard rootRelated Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
guard topology-change
To enable topology change guard on the port, use the guard topology-change command in MSTP interface configuration submode.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command enables topology change guard (also known as restricted TCN) on this interface. When this feature is enabled, topology changes originating at this interfaces, or received in BPDUs on this interface, are not propagated to the rest of the MSTP network. For more information on guard topology, refer to the Implementing Multiple Spanning Tree Protocol module in the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide.
Task ID
Examples
The following example shows how to enable TopologyChangeGuard on the port:
RP/0/RSP0/CPU0:router(config-mstp-if)# guard topology-changeRelated Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
hello-time (Access Gateway)
To configure the frequency of sending BPDUs on this interface, use the hello-time command in MSTAG interface configuration, REPAG Interface configuration, PVSTAG VLAN configuration, or PVRSTAG VLAN configuration submode.
Syntax Description
Command Modes
MSTAG interface configuration, REPAG Interface configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG VLAN configuration and PVRSTAG VLAN configuration mode.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Task ID
Operations
interface ( for MSTAG/REPAG)
read, write
ethernet-services ( for PVSTAG/PVRSTAG)
read, write
Examples
The following example shows how to set the port hello time to 1:
RP/0/RSP0/CPU0:router(config-mstag-if)# hello-time 1Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
hello-time (MSTP)
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the port hello time to 1:
RP/0/RSP0/CPU0:router(config-mstp-if)# hello-time 1Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
instance (MSTAG/REPAG)
To enter MSTAG Instance configuration mode or REPAG Instance configuration mode, use the instance command in MSTAG Interface or REPAG Interface configuration mode respectively.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Note
An instance ID of 0 represents the IST for the region.
Task ID
Examples
The following example shows how to enter MSTAG Instance configuration submode:
RP/0/RSP0/CPU0:router(config-mstag)# instance 101 RP/0/RSP0/CPU0:router(config-mstag-inst)#Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
instance (MSTP)
To enter the multiple spanning tree instance (MSTI) configuration submode, use the instance command in MSTP configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Note
An instance ID of 0 represents the CIST for the region.
Task ID
Examples
The following example shows how to enter the MSTI configuration submode:
RP/0/RSP0/CPU0:router(config-mstp)# instance 101 RP/0/RSP0/CPU0:router(config-mstp-inst)#Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Sets the bridge priority for the current MSTI
Displays the multiple spanning tree protocol status information.
Enters the MSTP configuration submode
Associates a set of VLAN IDs with the current MSTI.
instance cost
To set the internal path cost for a given instance on the current port, use the instance cost command in MSTP interface configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Note
An instance ID of 0 represents the IST for the region.
Task ID
Examples
The following example shows how to set the port cost to 10000 for the instance ID 101:
RP/0/RSP0/CPU0:router(config-mstp-if)# instance 101 cost 10000Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
instance port-priority
To set the port priority performance parameter for the MSTI, use the instance port-priority command in MSTP interface configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Note
An instance ID of 0 represents the CIST for the region.
Task ID
Examples
The following example shows how to set the port priority to 160 for the instance ID 101:
RP/0/RSP0/CPU0:router(config-mstp-if)# instance 101 port-priority 160Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
interface (MSTAG/REPAG)
To enter the MSTAG interface configuration submode, and to enable MSTAG for the specified port, use the interface command in MSTAG configuration submode.
Syntax Description
instance.subinterface Physical interface instance, followed by the subinterface identifier. Naming notation is instance.subinterface, and a period between arguments is required as part of the notation.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
The specified subinterface must be configured to match untagged packets, i.e., it must be configured with encapsulation untagged. Only a single subinterface on any given port may be specified.
A given port may only be enabled with one of MSTP, MSTAG, REPAG, PVSTAG or PVRSTAG.
Task ID
Examples
The following example shows how to enter the MSTAG interface configuration submode:
RP/0/RSP0/CPU0:router(config-mstag)# interface GigabitEthernet0/2/0/30.1 RP/0/RSP0/CPU0:router(config-mstag-if)#Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
interface (MSTP)
To enter the MSTP interface configuration submode, and to enable STP for the specified port, use the interface command in MSTP configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
A given port may only be enabled with one of MSTP, MSTAG, REPAG, PVSTAG or PVRSTAG.
Task ID
Examples
The following example shows how to enter the MSTP interface configuration submode:
RP/0/RSP0/CPU0:router(config-mstp)# interface GigabitEthernet 0/0/0/1 RP/0/RSP0/CPU0:router(config-mstp-if)#interface (PVSTAG/PVRSTAG)
To enter PVST or PVRST Access Gateway Interface configuration submode and to enable either PVSTAG or PVRSTAG for the specified port, use the interface command in PVST and PVRST Access Gateway configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
A given port may only be enabled with one of MSTP, MSTAG, REPAG, PVSTAG or PVRSTAG.
Task ID
Examples
The following example shows how to enter the PVST or PVRST Access Gateway Interface configuration submode:
RP/0/RSP0/CPU0:router(config-pvstag)# interface GigabitEthernet 0/0/0/1 RP/0/RSP0/CPU0:router(config-pvstag-if)#Related Commands
Command
Description
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
join-time
To set the join time for all active ports, use the join-time command in the MVRP configuration mode. To return to the default value, use the no form of this command.
Syntax Description
interval Maximum time for the join timer parameter for all active ports. The range is from 100 to 1000. The default value is 200.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to configure the join time for active ports:
RP/0/RSP0/CPU0:router# configure RP/0/RSP0/CPU0:router(config)# spanning-tree mst AA RP/0/RSP0/CPU0:router(config-mstp)# mvrp static RP/0/RSP0/CPU0:router(config-mvrp)# periodic transmit interval 5 RP/0/RSP0/CPU0:router(config-mvrp)# join-time 200 !Related Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
leave-time
To set the leave time for all active ports, use the leave-time command in the MVRP configuration mode. To return to the default value, use the no form of this command.
Syntax Description
interval Minimum time, in seconds, for the leaveall timer parameter for all active ports. The range is from 1 to 90 seconds .
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to configure the join time for active ports:
RP/0/RSP0/CPU0:router# configure RP/0/RSP0/CPU0:router(config)# spanning-tree mst AA RP/0/RSP0/CPU0:router(config-mstp)# mvrp static RP/0/RSP0/CPU0:router(config-mvrp)# periodic transmit interval 5 RP/0/RSP0/CPU0:router(config-mvrp)# leave-time 30!Related Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
leaveall-time
To set the leave all time for all active ports, use the leaveall-time command in the MVRP configuration mode. To return to the default value, use the no form of this command.
Syntax Description
interval Minimum time, in seconds, for the leaveall timer parameter for all active ports. The range is from 5 to 30 seconds.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to configure the join time for active ports:
RP/0/RSP0/CPU0:router# configure RP/0/RSP0/CPU0:router(config)# spanning-tree mst AA RP/0/RSP0/CPU0:router(config-mstp)# mvrp static RP/0/RSP0/CPU0:router(config-mvrp)# periodic transmit interval 5 RP/0/RSP0/CPU0:router(config-mvrp)# leaveall-time 20Related Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
link-type
To set the link type of the port to point-to-point or multipoint, use the link-type command in MSTP interface configuration submode.
Command Default
The default value is derived from the duplex setting for the link. A full-duplex link is considered point-to-point, and all others are considered multipoint.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the link type of the port to point-to-point:
RP/0/RSP0/CPU0:router# configure RP/0/RSP0/CPU0:router(config)# spanning-tree mst A RP/0/RSP0/CPU0:router(config-mstp)# interface GigabitEthernet 0/3/0/3 RP/0/RSP0/CPU0:router(config-mstp-if)# link-type point-to-pointRelated Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
max age
To set the maximum age for BPDUs sent on this interface, use the max age command in MSTAG interface configuration, REPAG interface configuration, PVSTAG VLAN configuration, or PVRSTAG VLAN configuration submode.
Syntax Description
Command Modes
MSTAG interface configuration, REPAG interface configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG VLAN and PVRSTAG VLAN configuration modes.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Task ID
Operations
ethernet-services (PVSTAG and PVRSTAG only)
read, write
interface (MSTAG and REPAG only)
read, write
Examples
The following example shows how to set the maximum age time for the bridge to 20:
RP/0/RSP0/CPU0:router(config-mstag-if)# max age 20Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
maximum age
To set the maximum age parameter for the bridge, use the maximum age command in MSTP configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
maximum hops (MSTP)
To set the maximum hops parameters for the bridge, use the maximum hops command in MSTP configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the maximum number of hops for the bridge to 30:
RP/0/RSP0/CPU0:router(config-mstp)# max hops 30mvrp static
To enable Multiple VLAN Registration Protocol (MVRP) in static mode and to enter the MVRP configuration submode, use the mvrp static command in the MSTP configuration mode. To return to the default setting, use the no form of this command.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable MVRP static mode:
RP/0/RSP0/CPU0:router# configure RP/0/RSP0/CPU0:router(config)# spanning-tree mst AA RP/0/RSP0/CPU0:router(config-mstp)# mvrp static RP/0/RSP0/CPU0:router(config-mvrp)#Related Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Sets the join time for all active ports.
Sets the leave time for all active ports.
Sets the leave all time for all active ports.
Sends periodic Multiple VLAN Registration Protocol Data Unit (MVRPDU) on all active ports.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
Enters the MSTP configuration submode
name (MSTAG/REPAG)
To set the name of the MSTP region, use the name command in MSTAG interface configuration or REPAG interface configuration submode.
Syntax Description
name String of a maximum of 32 characters conforming to the definition of SnmpAdminString in RFC 2271.
Command Default
The MAC address of the switch, formatted as a text string using the hexadecimal representation specified in IEEE Std 802.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the name of the MSTP region to leo:
RP/0/RSP0/CPU0:router(config-mstag-if)# name leoRelated Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
name (MSTP)
Syntax Description
name String of a maximum of 32 characters conforming to the definition of SnmpAdminString in RFC 2271.
Command Default
The MAC address of the switch, formatted as a text string using the hexadecimal representation specified in IEEE Std 802.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the name of the MSTP region to m1:
RP/0/RSP0/CPU0:router(config-mstp)# name m1periodic transmit
To send periodic Multiple VLAN Registration Protocol Data Unit (MVRPDU) on all active ports, use the periodic transmit command in the MVRP configuration mode. To return to the default value, use the no form of this command.
Syntax Description
interval interval Sends periodic MVRPDU on all active ports at specified time interval. The range is from 2 to 10 seconds.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Sending periodic messages is not required when the state machines operate correctly. The periodic messages are intended purely to cope with a succession of lost new declaration MVRPDUs. In the absence of periodic messages, declarations are re-sent every 10 to 15 seconds in response to the LeaveAll timer expiring.
Task ID
Examples
The following example shows how to enable MVRP static mode:
RP/0/RSP0/CPU0:router# configure RP/0/RSP0/CPU0:router(config)# spanning-tree mst AA RP/0/RSP0/CPU0:router(config-mstp)# mvrp static RP/0/RSP0/CPU0:router(config-mvrp)# periodic transmit interval 5Related Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
port-id
To set the port ID for the current switch, use the port-id command in MSTAG interface configuration, REPAG interface configuration, PVSTAG VLAN configuration, or PVRSTAG VLAN configuration submode.
Syntax Description
id Interface port ID.
For MSTAG, REPAG and PVRSTAG the allowed range is between 1 to 4095. For PVSTAG the allowed range is between 1 to 255.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-id Sets the startup port ID.
Command Modes
MSTAG interface configuration, REPAG interface configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG VLAN and PVRSTAG VLAN configuration modes.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command is used when configuring Access Gateway, to set the value of the port ID advertised in BPDUs sent on this interface.
Task ID
Task ID
Operations
ethernet-services (PVSTAG and PVRSTAG only)
read, write
interface (MSTAG and REPAG only)
read, write
Examples
The following example shows how to set the port ID:
RP/0/RSP0/CPU0:router(config-mstag-if)# port-id 111Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
port-priority
To set the port priority performance parameter for the MSTI, use the port-priority command in MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration, or PVRSTAG VLAN configuration submode.
Syntax Description
priority Port priority. For MSTAG, REPAG and PVRSTAG, the range is between 0 to 40 in multiples of 16. For PVSTAG, the range is between 0 to 255.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-priority Sets the startup port priority.
Command Modes
MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG VLAN and PVRSTAG VLAN configuration modes.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Task ID
Operations
ethernet-services (PVSTAG and PVRSTAG only)
read, write
interface (MSTAG and REPAG only)
read, write
Examples
The following example shows how to set the port priority to 160:
RP/0/RSP0/CPU0:router(config-mstag-if-inst)# port-priority 160Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
portfast
To enable PortFast on the port, and optionally enable BPDU guard, use the portfast command in MSTP interface configuration submode.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command enables the portfast feature (also known as edge port). When this is enabled, MSTP treats the port as an edge port, i.e., it keeps it in forwarding state and does not generate topology changes if the port goes down or comes up. It is not expected to receive MSTP BPDUs on an edge port. BPDU guard is a Cisco extension that causes the interface to be shut down using error-disable if an MSTP BPDU is received. For more information on portfast feature, refer to the Implementing Multiple Spanning Tree Protocol module in the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide.
Task ID
Examples
The following example shows how to enable PortFast and BPDU guard on the port:
RP/0/RSP0/CPU0:router(config-mstp-if)# portfast RP/0/RSP0/CPU0:router(config-mstp-if)# portfast bpduguardRelated Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
preempt delay
To enable topology control and set the preempt delay on startup, use the preempt delay command in MSTAG, REPAG, PVSTAG or PVRSTAG configuration mode.
Syntax Description
for Specifies length of time to delay preempting for in seconds, minutes or hours.
until Specifies time to delay preempting until the mentioned interval (24-hour hh:mm:ss).
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG and PVRSTAG configuration modes.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command enables startup topology control for Access Gateway. By default, when an interface comes up, Access Gateway starts sending STP BPDUs immediately based on the configured values. This could cause the devices in the access network to immediately start directing traffic to this device. However, the data plane may not yet be ready to forward packets to the core or aggregation network. When a preempt delay is configured, alternative values are sent in the BPDUs for the specified time. These alternative values must be configured using the startup-value option, and can be set so as to cause the access devices not to use this link unless it is the only one available.
For more information on preempt delay, refer to the Implementing Multiple Spanning Tree Protocol module in the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide.
Task ID
Task ID
Operations
ethernet-services (PVSTAG and PVRSTAG only)
read, write
interface (MSTAG and REPAG only)
read, write
Examples
The following example shows how to set the preempt delay for 20 seconds:
RP/0/RSP0/CPU0:router(config-mstag)# preempt delay for 20 secondsRelated Commands
Command
Description
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
priority (Access Gateway)
To set the bridge priority for the current MSTI or VLAN, use the priority command in the MSTAG, REPAG, PVSTAG or PVRSTAG instance configuration submodes.
Syntax Description
priority Specifies the bridge priority. For MSTAG, REPAG and PVRSTAG, the range is between 0 to 61440 in multiples of 4096. For PVSTAG, the range is between 0 to 65535.
startup-value Sets an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-priority Specifies the startup priority.
Command Default
Default value is 32768. If the startup value is not specified while the standard value is, the startup value defaults to the standard value.
Command Modes
MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG and PVRSTAG configuration mode.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
This command is used when configuring Access Gateway to set the bridge priority that is advertised for this MSTI or VLAN in the BPDUs sent from this interface.
Task ID
Task ID
Operations
ethernet-services (PVSTAG and PVRSTAG only)
read, write
interface (MSTAG and REPAG only)
read, write
Examples
The following example shows how to set the bridge priority for the current MSTI:
RP/0/RSP0/CPU0:router(config-mstag-if-inst)# priority 4096 startup-value 32768priority (MSTP)
To set the bridge priority for the current MSTI, use the priority command in MSTI configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the bridge priority to 8192 for the current MSTI:
RP/0/RSP0/CPU0:router(config-mstp-inst)# priority 8192Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the multiple spanning tree instance (MSTI) configuration submode.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
provider-bridge (MSTAG/REPAG)
To place the current instance of the protocol in 802.1ad mode, use the provider-bridge command in MSTAG or REPAG interface configuration submode.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to use the provider-bridge command:
RP/0/RSP0/CPU0:router(config-mstag-if)# provider-bridgeRelated Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
provider-bridge (MSTP)
To place the current instance of the protocol in 802.1ad mode, use the provider-bridge command in MSTP configuration submode.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
revision (MSTAG/REPAG)
To set the revision level in the BPDUs sent from this interface, use the revision command in MSTAG or REPAG interface configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the revision level of the MSTP region to 1:
RP/0/RSP0/CPU0:router(config-mstag-if)# revision 1Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
revision (MSTP)
To set the revision level of the MSTP region, use the revision command in MSTP configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the revision level of the MSTP region to 10:
RP/0/RSP0/CPU0:router(config-mstp)# revision 10root-cost
To set the root path cost to sent in BPDUs from this interface, use the root-cost command in PVSTAG VLAN configuration or PVRSTAG VLAN configuration mode.
Syntax Description
cost Sets the root path cost for the current port. The cost ranges between 0 to 4294967295.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-cost Sets the startup cost.
Command Default
The default is 0. If a cost is configured but no startup value is configured, the startup value defaults to the configured cost value. If no cost is configured, the startup value defaults to 1.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the root path cost for the current port:
RP/0/RSP0/CPU0:router(config-pvrstag-if-vlan)# root-cost 1000000Related Commands
Command
Description
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
root-id
To set the identifier of the root bridge for BPDUs sent from a port and an optional startup-value, use the root-id command in the MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration and PVRSTAG VLAN configuration modes.
Syntax Description
id Sets the root bridge ID (MAC address) to set in the BPDUs.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-id Sets the startup root ID.
Command Default
The MAC address of the region root switch. If the startup value is not specified while the standard value is, the startup value defaults to the standard value. For MSTAG and REPAG, the default is the bridge ID. For PVSTAG and PVRSTAG, the default is 0000.0000.0000.
Command Modes
MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG VLAN and PVRSTAG VLAN configuration modes.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Task ID
Operations
ethernet-services (PVSTAG and PVRSTAG only)
read, write
interface (MSTAG and REPAG only)
read, write
Examples
The following example shows how to set the identifier of the root bridge for BPDUs:
RP/0/RSP0/CPU0:router(config-pvstag-if-vlan)#root-id 0000.0000.0000 startup-value 0000.0000.0001Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
root-priority
To set the root bridge priority sent in BPDUs for this interface for this MSTI or VLAN, and to set an optional startup value, use the root-priority command in the MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration and PVRSTAG VLAN configuration modes.
Syntax Description
priority Sets the root bridge priority to set in the BPDUs. For MSTAG, REPAG and PVRSTAG, the range is between 0 to 61440 in multiples of 4096. For PVSTAG, the range is between 0 to 65535.
startup-value Specifies an alternate value to use when the interface first comes up, while the preempt delay timer is running.
startup-priority Sets the startup root priority.
Command Default
Default value is 32768. If the startup value is not specified while the standard value is, the startup value defaults to the standard value.
For MSTAG and REPAG, the default is 32768. For PVSTAG and PVRSTAG, the default is 0.
Command Modes
MSTAG instance configuration, REPAG instance configuration, PVSTAG VLAN configuration, PVRSTAG VLAN configuration
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.0.0
This command was supported in the PVSTAG VLAN and PVRSTAG VLAN configuration modes.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Task ID
Operations
ethernet-services (PVSTAG and PVRSTAG only)
read, write
interface (MSTAG and REPAG only)
read, write
Examples
The following example shows how to set the root bridge priority for the current MSTI:
RP/0/RSP0/CPU0:router(config-pvstag-if-vlan)# root-priority 4096 startup-value 8192Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
show ethernet mvrp mad
To display the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port, for each active attribute value (VID), use the show ethernet mvrp mad command in EXEC mode.
Syntax Description
brief (Optional) Displays a brief view.
interface (Optional) Displays the MVRP state for the given subinterface or base interface name.
interface-name (Optional) Displays the interface name.
vlan vlan-id
(Optional) Displays information for a particular VLAN. The range is between 0 to 4094.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following sample output is from the show ethernet mvrp mad command:
RP/0/RSP0/CPU0:router# show ethernet mvrp mad interface GigabitEthernet 0/1/0/1 GigabitEthernet0/1/0/1 Participant Type: Full; Point-to-Point: Yes Admin Control: Applicant Normal; Registrar Normal LeaveAll Passive (next in 5.92s); periodic disabled Leave in 25.70s; Join not running Last peer 0293.6926.9585; failed registrations: 0 VID Applicant Registrar ---- --------------------- --------- 1 Very Anxious Observer Leaving 283 Quiet Passive EmptyRelated Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays packet statistics per port.
Displays a summary of the VIDs that are declared or registered.
show ethernet mvrp statistics
Syntax Description
interface (Optional) Displays the MVRP state for the given subinterface or base interface name.
type (Optional) Interface type. For more information, use the question mark (?) online help function.
interface-path-id (Optional) Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following sample output is from the show ethernet mvrp statistics command:
RP/0/RSP0/CPU0:router# show ethernet mvrp statistics interface GigabitEthernet 0/1/0/1 GigabitEthernet0/1/0/1 MVRPDUs TX: 1245 MVRPDUs RX: 7 Dropped TX: 0 Dropped RX: 42 Invalid RX: 12Related Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays a summary of the VIDs that are declared or registered.
show ethernet mvrp status
To display a summary of the VIDs that are declared or registered, and to learn the origin of these declarations, use the show ethernet mvrp status command in EXEC mode.
Syntax Description
interface (Optional) Displays the MVRP state for the given subinterface or base interface name.
type (Optional) Interface type. For more information, use the question mark (?) online help function.
interface-path-id (Optional) Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following sample output is from the show ethernet mvrp status command:
RP/0/RSP0/CPU0:router# show ethernet mvrp status interface GigabitEthernet 0/1/0/1 GigabitEthernet0/1/0/1 Statically declared: 1-512,768,980-1034 Dynamically declared: 2048-3084 Registered: 1-512Related Commands
Command
Description
Enables debugging of sent and received MVRP packets.
Enables MVRP protocol debugging on a specific interface, location or vlan.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the current state of the Multiple Registration Protocol (MRP) Attribute Declaration (MAD) component on a port.
Displays packet statistics per port.
show l2vpn mstp port
To display the internal MSTI number and number of ports for each VLAN, use the show l2vpn mstp port command in EXEC mode.
Syntax Description
interface (Optional) Displays the MSTP state for the given interface.
type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
msti value
(Optional) Displays the filter for Multiple Spanning Tree Instance (MSTI). The range is from 0 to 100.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following sample output is from the show l2vpn mstp port command:
RP/0/RSP0/CPU0:router# show l2vpn mstp port interface gigabitethernet 0/1/0/0 msti 5Related Commands
Command
Description
Enters the MSTP configuration submode
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the MSTP configuration submode
Enters the MST Access Gateway configuration submode.
Displays the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface.
show l2vpn mstp vlan
To display the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface, use the show l2vpn mstp vlan command in EXEC mode.
Syntax Description
interface (Optional) Displays the MSTP state for the given subinterface or base interface name.
type (Optional) Interface type. For more information, use the question mark (?) online help function.
interface-path-id (Optional) Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
msti value
(Optional) Displays the filter for Multiple Spanning Tree Instance (MSTI). The range is from 0 to 100.
vlan-id value
(Optional) Displays the filter for the VLAN ID. The range is from 0 to 4294967295.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following sample output is from the show l2vpn mstp vlan command:
RP/0/RSP0/CPU0:router# show l2vpn mstp vlan interface gigabitethernet 0/1/0/0 msti 5 vlan-id 5Related Commands
Command
Description
Enters the MSTP configuration submode
Enters the MST Access Gateway configuration submode.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
Enters the MSTP configuration submode
Enters the MST Access Gateway configuration submode.
Displays the internal MSTI number and number of ports for each VLAN.
show spanning-tree mst
To display the multiple spanning tree protocol status information, use the show spanning-tree mst command in EXEC mode.
show spanning-tree mst protocol instance identifier [ instance instance-id ] [ blocked-ports | brief ]
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
instance instance-id Forward interface in rack/slot/instance/port format.
brief Displays a summary of MST information only.
blocked-ports Displays MST information for blocked ports only.
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 3.9.1
The topology-change keyword was added.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree mst command, which produces an overview of the spanning tree protocol state:
RP/0/RSP0/CPU0:router# show spanning-tree mst a instance 0 Operating in Provider Bridge mode MSTI 0 (CIST): VLANS Mapped: 1-100, 500-1000, 1017 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 Interface Port ID Designated Port ID Name Prio.Nbr Cost Role State Cost Bridge ID Prio.Nbr ---------------------- -------- ------ --------- ------------------------ -------- GigabitEthernet0/1/2/1 128.65 20000 DSGN FWD 0 4097 0004.9b78.0800 128.65 GigabitEthernet0/1/2/2 128.66 20000 DSGN FWD 0 4097 0004.9b78.0800 128.66 ...The following example shows the output from the show spanning-tree mst command when the brief and blocked-ports keywords are used:
RP/0/RSP0/CPU0:router# show spanning-tree mst a brief MSTI 0 (CIST): VLAN IDs: 1-100, 500-1000, 1017 This is the Root Bridge MSTI 1: VLAN IDS: 101-499 Root Port GigabitEthernet0/1/2/2 , Root Bridge ID 0002.9b78.0812 ... RP/0/RSP0/CPU0:router# show spanning-tree mst blocked-ports MSTI 0 (CIST): Interface Port ID Designated Port ID Name Prio.Nbr Cost Role State Cost Bridge ID Prio.Nbr ---------------------- -------- ------ --------- ------------------------ -------- GigabitEthernet0/0/4/4 128.196 200000 ALT BLK 0 4097 0004.9b78.0800 128.195 ...Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Displays the internal MSTI number and number of ports for each VLAN.
Displays the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface.
Displays the contents of MSTP BPDUs being sent and received on a particular interface.
Displays the VLAN ID to MSTI mapping table.
Displays information about misconfiguration affecting MSTP.
Displays detailed information on the interface state.
Displays details of the last topology change that occurred for each pair of port and instance.
Enters the MSTP configuration submode
show spanning-tree mst bpdu interface
To display the contents of MSTP BPDUs being sent and received on a particular interface, use the show spanning-tree mst bpdu interface command in the EXEC mode.
show spanning-tree mst protocol instance identifier bpdu interface type interface-path-id [ direction { receive | transmit } ]
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
bpdu interface Displays multiple spanning tree BPDUs.
type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
direction Displays per-interface MST BPDUs for a specific direction.
receive Displays only the MST BPDUs received on this interface.
transmit Displays only the MST BPDUs being transmitted for this interface.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree mst command, which produces details on the BPDUs being output and received on a given local interface:
Note
Several received packets can be stored in case of MSTP operating on a shared LAN.
RP/0/RSP0/CPU0:router# show spanning-tree mst a bpdu interface GigabitEthernet0/1/2/2 direction transmit MSTI 0 (CIST): Root ID : 0004.9b78.0800 Path Cost : 83 Bridge ID : 0004.9b78.0800 Port ID : 12 Hello Time : 2 ...Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Displays the internal MSTI number and number of ports for each VLAN.
Displays the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface.
Displays the multiple spanning tree protocol status information.
Displays the VLAN ID to MSTI mapping table.
Displays information about misconfiguration affecting MSTP.
Displays detailed information on the interface state.
Displays details of the last topology change that occurred for each pair of port and instance.
Enters the MSTP configuration submode
show spanning-tree mst configuration
To display the VLAN ID to MSTI mapping table, use the show spanning-tree mst configuration command in the EXEC mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
configuration Displays a summary of MST related configuration.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree mst command, which displays the VLAN ID to MSTI mapping table:
RP/0/RSP0/CPU0:router# show spanning-tree mst a configuration Name leo Revision 2702 Config Digest 9D-14-5C-26-7D-BE-9F-B5-D8-93-44-1B-E3-BA-08-CE Instance Vlans mapped -------- ------------------------------- 0 1-9,11-19,21-29,31-39,41-4094 1 10,20,30,40 ------------------------------------------Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Displays the internal MSTI number and number of ports for each VLAN.
Displays the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface.
Displays the multiple spanning tree protocol status information.
Displays the contents of MSTP BPDUs being sent and received on a particular interface.
Displays information about misconfiguration affecting MSTP.
Displays detailed information on the interface state.
Displays details of the last topology change that occurred for each pair of port and instance.
Enters the MSTP configuration submode
show spanning-tree mst errors
To display information about misconfiguration affecting MSTP, use the show spanning-tree mst errors in the EXEC mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
errors Displays configuration errors for MST.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree mst command, which produces information about interfaces that are configured for MSTP but where MSTP is not operational. Primarily this shows information about interfaces which do not exist:
RP/0/RSP0/CPU0:router# show spanning-tree mst a errors Interface Error ------------------------------- GigabitEthernet1/2/3/4 Interface does not exist.Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Displays the internal MSTI number and number of ports for each VLAN.
Displays the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface.
Displays the multiple spanning tree protocol status information.
Displays the contents of MSTP BPDUs being sent and received on a particular interface.
Displays the VLAN ID to MSTI mapping table.
Displays detailed information on the interface state.
Displays details of the last topology change that occurred for each pair of port and instance.
Enters the MSTP configuration submode
show spanning-tree mst interface
To display detailed information on the interface state, use the show spanning-tree mst interface command in EXEC mode.
show spanning-tree mst protocol instance identifier interface type interface-path-id [ instance id ]
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
interface type
Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
instance id Forward interface in rack/slot/instance/port format.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree mst command, which produces more detailed information regarding interface state than the standard command as described above:
RP/0/RSP0/CPU0:router# show spanning-tree mst a interface GigabitEthernet0/1/2/1 instance 3 GigabitEthernet0/1/2/1 Cost: 20000 link-type: point-to-point hello-time 1 Portfast: no BPDU Guard: no Guard root: no Guard topology change: no BPDUs sent 492, received 3 MST 3: Edge port: Boundary : internal Designated forwarding Vlans mapped to MST 3: 1-2,4-2999,4000-4094 Port info port id 128.193 cost 200000 Designated root address 0050.3e66.d000 priority 8193 cost 20004 Designated bridge address 0002.172c.f400 priority 49152 port id 128.193 Timers: message expires in 0 sec, forward delay 0, forward transitions 1 Transitions to reach this state: 12The output includes interface information about the interface which applies to all MSTIs:
- Cost
- link-type
- hello-time
- portfast (including whether BPDU guard is enabled)
- guard root
- guard topology change
- BPDUs sent, received.
It also includes information specific to each MSTI:
- Port ID, priority, cost
- BPDU information from root (bridge ID, cost, and priority)
- BPDU information being sent on this port (Bridge ID, cost, priority)
- State transitions to reach this state.
- Topology changes to reach this state.
Flush containment status for this MSTI.Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Displays the internal MSTI number and number of ports for each VLAN.
Displays the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface.
Displays the multiple spanning tree protocol status information.
Displays the contents of MSTP BPDUs being sent and received on a particular interface.
Displays the VLAN ID to MSTI mapping table.
Displays information about misconfiguration affecting MSTP.
Displays details of the last topology change that occurred for each pair of port and instance.
Enters the MSTP configuration submode
show spanning-tree mst topology-change flushes
To display details of the last topology change that occurred for each pair of port and instance, as well as a count of the number of topology changes at each port, use the show spanning-tree mst topology-change flushes command in the EXEC mode.
show spanning-tree mst protocol instance identifier topology-change flushes [ instance id ] [ interface type interface-path-id | latest ]
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
topology-change Displays topology change information.
flushes Displays latest topology change flushes for each interface.
instance id Instance for which information needs to be displayed.
interface type
Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
latest Displays the most recent topology change for each instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Note
The latest filter displays only the most recent topology change for each instance. The output also displays information of the flush operation that takes place when the flush containment is active on an MSTI for a port.
Task ID
Examples
The following example shows the output from the show spanning-tree mst command, which displays details on the MSTIs :
RP/0/RSP0/CPU0:router# show spanning-tree mst M topology-change flushes instance$ MSTI 1: Interface Last TC Reason Count ------------ -------------------- -------------------------------- ----- Te0/0/0/1 04:16:05 Mar 16 2010 Role change: DSGN to ---- 10 # # RP/0/RSP0/CPU0:router# show spanning-tree mst M topology-change flushes instance$ MSTI 0 (CIST): Interface Last TC Reason Count ------------ -------------------- -------------------------------- ----- Te0/0/0/1 04:16:05 Mar 16 2010 Role change: DSGN to ---- 10 # #Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Displays the internal MSTI number and number of ports for each VLAN.
Displays the Multiple Spanning Tree Protocol (MSTP) state for the virtual local area network (VLAN) on a given interface.
Displays the multiple spanning tree protocol status information.
Displays the contents of MSTP BPDUs being sent and received on a particular interface.
Displays the VLAN ID to MSTI mapping table.
Displays information about misconfiguration affecting MSTP.
Displays detailed information on the interface state.
Enters the MSTP configuration submode
show spanning-tree mstag
To display the values currently used for populating the BPDUs sent by all ports (with the specified feature enabled), use the show spanning-tree mstag in the EXEC mode.
Syntax Description
protocol instance identifier String (a maximum of 25 characters) that identifies the protocol instance.
Command History
Release
Modification
Release 3.7.1
This command was introduced.
Release 4.1.0
The show output of this command was modified to include information on the MSTAG Edge Mode feature.
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
This example shows the output from the show spanning-tree mstag command:
RP/0/RSP0/CPU0:router# show spanning-tree mstag A GigabitEthernet0/0/0/1 Preempt delay is disabled. Name: 6161:6161:6161 Revision: 0 Max Age: 20 Provider Bridge: no Bridge ID: 6161.6161.6161 Port ID: 1 External Cost: 0 Hello Time: 2 Active: no BPDUs sent: 0 MSTI 0 (CIST): VLAN IDs: 1-9,32-39,41-4094 Role: Designated Bridge Priority: 32768 Port Priority: 128 Cost: 0 Root Bridge: 6161.6161.6161 Root Priority: 32768 Topology Changes: 123 MSTI 2 VLAN IDs: 10-31 Role: Designated Bridge Priority: 32768 Port Priority: 128 Cost: 0 Root Bridge: 6161.6161.6161 Root Priority: 32768 Topology Changes: 123 MSTI 10 VLAN IDs: 40 Role: Root (Edge mode) Bridge Priority: 32768 Port Priority: 128 Cost: 200000000 Root Bridge: 6161.6161.6161 Root Priority: 61440 Topology Changes: 0show spanning-tree mstag bpdu interface
To view the content of the BPDUs being sent from this interface, use the show spanning-tree mstag bpdu interface command in the EXEC mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
bpdu interface Displays multiple spanning tree BPDUs.
type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree mstag bpdu interface command:
RP/0/RSP0/CPU0:router#show spanning-tree mstag foo bpdu interface GigabitEthernet 0/0/0/0 Transmitted: MSTI 0 (CIST): ProtocolIdentifier: 0 ProtocolVersionIdentifier: 3 BPDUType: 2 CISTFlags: Top Change Ack 0 Agreement 1 Forwarding 1 Learning 1 Role 3 Proposal 0 Topology Change 0 CISTRootIdentifier: priority 8, MSTI 0, address 6969.6969.6969 CISTExternalPathCost: 0 CISTRegionalRootIdentifier: priority 8, MSTI 0, address 6969.6969.6969 CISTPortIdentifierPriority: 8 CISTPortIdentifierId: 1 MessageAge: 0 MaxAge: 20 HelloTime: 2 ForwardDelay: 15 Version1Length: 0 Version3Length: 80 FormatSelector: 0 Name: 6969:6969:6969 Revision: 0 MD5Digest: ac36177f 50283cd4 b83821d8 ab26de62 CISTInternalRootPathCost: 0 CISTBridgeIdentifier: priority 8, MSTI 0, address 6969.6969.6969 CISTRemainingHops: 20 MSTI 1: MSTIFlags: Master 0 Agreement 1 Forwarding 1 Learning 1 Role 3 Proposal 0 Topology Change 0 MSTIRegionalRootIdentifier: priority 8, MSTI 1, address 6969.6969.6969 MSTIInternalRootPathCost: 0 MSTIBridgePriority: 1 MSTIPortPriority: 8 MSTIRemainingHops: 20show spanning-tree mstag topology-change flushes
To display details of the last topology change that occurred for each pair of port and instance, as well as a count of the number of topology changes at each port, use the show spanning-tree mstag topology-change flushes command in the EXEC mode.
Note
The latest filter displays only the most recent topology change for each instance. The output also displays information of the flush operation that takes place when the flush containment is active on an MSTI for a port.
show spanning-tree mstag protocol instance identifier topology-change flushes [ instance id ] [ interface type interface-path-id | latest ]
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
topology-change Displays topology change information.
flushes Displays latest topology change flushes for each interface.
instanceid Forward interface in rack/slot/instance/port format.
interface type
Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
latest Displays the most recent topology change for each instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree mstag topology-change flushes command, which displays details on the MSTIs :
RP/0/RSP0/CPU0:router# show spanning-tree mstag b topology-change flushes MSTAG Protocol Instance b Interface Last TC Reason Count ------------ ------------------- -------------------------------- ----- Gi0/0/0/1 18:03:24 2009-07-14 Gi0/0/0/1.10 egress TCN 65535 Gi0/0/0/2 21:05:04 2009-07-15 Gi0/0/0/2.1234567890 ingress TCN 2show spanning-tree pvrstag
To display the values currently used for populating the BPDUs sent by all ports (with the specified feature enabled), use the show spanning-tree pvrstag in the EXEC mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
interface type
Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree pvrstag command:
RP/0/RSP0/CPU0:router# show spanning-tree pvrstag interface GigabitEthernet0/0/0/1 GigabitEthernet0/0/0/1 VLAN 10 Preempt delay is disabled. Sub-interface: GigabitEthernet0/0/0/1.20 (Up) Max Age: 20 Root Priority: 0 Root Bridge: 0000.0000.0000 Cost: 0 Bridge Priority: 32768 Bridge ID: 6161.6161.6161 Port Priority: 128 Port ID: 1 Hello Time: 2 Active: no BPDUs sent: 0 Topology Changes: 123 VLAN 20show spanning-tree pvstag
To display the values currently used for populating the BPDUs sent by all ports (with the specified feature enabled), use the show spanning-tree pvstag in the EXEC mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
interface type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree pvstag command:
RP/0/RSP0/CPU0:router# show spanning-tree pvstag interface GigabitEthernet0/0/0/1 GigabitEthernet0/0/0/1 VLAN 10 Preempt delay is disabled. Sub-interface: GigabitEthernet0/0/0/1.20 (Up) Max Age: 20 Root Priority: 0 Root Bridge: 0000.0000.0000 Cost: 0 Bridge Priority: 32768 Bridge ID: 6161.6161.6161 Port Priority: 128 Port ID: 1 Hello Time: 2 Active: no BPDUs sent: 0 Topology Changes: 123 VLAN 20show spanning-tree repag
To display the values currently used for populating the BPDUs sent by all ports (with the specified feature enabled), use the show spanning-tree repag in the EXEC mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
interface type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree repag command:
RP/0/RSP0/CPU0:router# show spanning-tree repag interface GigabitEthernet0/0/0/1 GigabitEthernet0/0/0/1 VLAN 10 Preempt delay is disabled. Sub-interface: GigabitEthernet0/0/0/1.20 (Up) Max Age: 20 Root Priority: 0 Root Bridge: 0000.0000.0000 Cost: 0 Bridge Priority: 32768 Bridge ID: 6161.6161.6161 Port Priority: 128 Port ID: 1 Hello Time: 2 Active: no BPDUs sent: 0 Topology Changes: 123 VLAN 20Related Commands
Command
Description
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Displays BPDU information from root (bridge ID, cost, and priority) and the BPDU information being sent on the port.
Displays details of the last topology change that occurred for each pair of port and instance.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
show spanning-tree repag bpdu interface
To display BPDU information from root (bridge ID, cost, and priority) and the BPDU information being sent on the port (Bridge ID, cost, priority) specific to an MSTI, use the show spanning-tree repag bpdu interface command in the EXEC mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
bpdu interface Displays multiple spanning tree BPDUs.
type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree repag command, which produces details on the BPDUs being output and received on a given local interface:
RP/0/RSP0/CPU0:router#show spanning-tree mstag foo bpdu interface GigabitEthernet 0/0/0/0 Transmitted: MSTI 0 (CIST): ProtocolIdentifier: 0 ProtocolVersionIdentifier: 3 BPDUType: 2 CISTFlags: Top Change Ack 0 Agreement 1 Forwarding 1 Learning 1 Role 3 Proposal 0 Topology Change 0 CISTRootIdentifier: priority 8, MSTI 0, address 6969.6969.6969 CISTExternalPathCost: 0 CISTRegionalRootIdentifier: priority 8, MSTI 0, address 6969.6969.6969 CISTPortIdentifierPriority: 8 CISTPortIdentifierId: 1 MessageAge: 0 MaxAge: 20 HelloTime: 2 ForwardDelay: 15 Version1Length: 0 Version3Length: 80 FormatSelector: 0 Name: 6969:6969:6969 Revision: 0 MD5Digest: ac36177f 50283cd4 b83821d8 ab26de62 CISTInternalRootPathCost: 0 CISTBridgeIdentifier: priority 8, MSTI 0, address 6969.6969.6969 CISTRemainingHops: 20 MSTI 1: MSTIFlags: Master 0 Agreement 1 Forwarding 1 Learning 1 Role 3 Proposal 0 Topology Change 0 MSTIRegionalRootIdentifier: priority 8, MSTI 1, address 6969.6969.6969 MSTIInternalRootPathCost: 0 MSTIBridgePriority: 1 MSTIPortPriority: 8 MSTIRemainingHops: 20Related Commands
Command
Description
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays details of the last topology change that occurred for each pair of port and instance.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
show spanning-tree repag topology-change flushes
To display details of the last topology change that occurred for each pair of port and instance, as well as a count of the number of topology changes at each port, use the show spanning-tree repag topology-change flushes command in the EXEC mode.
Note
The latest filter displays only the most recent topology change for each instance. The output also displays information of the flush operation that takes place when the flush containment is active on an MSTI for a port.
show spanning-tree repag protocol instance identifier topology-change flushes [ instance id ] [ interface type interface-path-id | latest ]
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
topology-change Displays topology change information.
flushes Displays latest topology change flushes for each interface.
instanceid Forward interface in rack/slot/instance/port format.
interface type Interface type. For more information, use the question mark (?) online help function.
interface-path-id Physical interface or virtual interface.
Note Use the show interfaces command to see a list of all interfaces currently configured on the router.
For more information about the syntax for the router, use the question mark (?) online help function.
latest Displays the most recent topology change for each instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows the output from the show spanning-tree repag topology-change flushes command, which displays details on the MSTIs :
RP/0/RSP0/CPU0:router#show spanning-tree repag b topology-change flushes MSTAG Protocol Instance b Interface Last TC Reason Count ------------ ------------------- -------------------------------- ----- Gi0/0/0/1 18:03:24 2009-07-14 Gi0/0/0/1.10 egress TCN 65535 Gi0/0/0/2 21:05:04 2009-07-15 Gi0/0/0/2.1234567890 ingress TCN 2Related Commands
Command
Description
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays BPDU information from root (bridge ID, cost, and priority) and the BPDU information being sent on the port.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
spanning-tree mst
To enter the MSTP configuration submode, use the spanning-tree mst command in global configuration mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Note
In MSTP configuration, only one protocol instance can be configured at a time.
Task ID
Examples
The following example shows how to enter the MSTP configuration submode:
RP/0/RSP0/CPU0:router(config)# spanning-tree mst a RP/0/RSP0/CPU0:router(config-mstp)#Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the multiple spanning tree instance (MSTI) configuration submode.
Enters the MSTP interface configuration submode, and enables STP for the specified port.
Enables Multiple VLAN Registration Protocol (MVRP) in static mode.
Displays the multiple spanning tree protocol status information.
spanning-tree mstag
To enter the MST Access Gateway configuration submode, use the spanning-tree mstag command in global configuration mode.
Syntax Description
protocol instance identifier String of a maximum of 25 characters that identifies the protocol instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Refer to the Implementing Multiple Spanning Tree Protocol module of the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide for more information.
Note
Unlike MSTP configuration, multiple MSTAG instances can be configured concurrently.
Task ID
Examples
The following example shows how to enter the MSTAG configuration submode:
RP/0/RSP0/CPU0:router(config)# spanning-tree mstag a RP/0/RSP0/CPU0:router(config-mstag)#Related Commands
Command
Description
Enables MSTAG packet debugging.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Displays the values currently used for populating the BPDUs sent by all ports.
spanning-tree pvrstag
To enter the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode, use the spanning-tree pvrstag command in global configuration mode.
Syntax Description
protocol instance identifier String of a maximum of 255 characters that identifies the protocol instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Refer to the Implementing Multiple Spanning Tree Protocol module of the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide for more information.
Task ID
Examples
The following example shows how to enter the PVRSTAG configuration submode:
RP/0/RSP0/CPU0:router(config)# spanning-tree pvrstag a RP/0/RSP0/CPU0:router(config-pvrstag)#Related Commands
Command
Description
Enables packet debugging for sent and received PVRSTAG packets.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
spanning-tree pvstag
To enter the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode, use the spanning-tree pvstag command in global configuration mode.
Syntax Description
protocol instance identifier String of a maximum of 255 characters that identifies the protocol instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Refer to the Implementing Multiple Spanning Tree Protocol module of the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide for more information.
Task ID
Examples
The following example shows how to enter the PVSTAG configuration mode:
RP/0/RSP0/CPU0:router(config)# spanning-tree pvstag a RP/0/RSP0/CPU0:router(config-pvstag)#Related Commands
Command
Description
Enables packet debugging for sent and received PVSTAG packets.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Displays the values currently used for populating the BPDUs sent by all ports.
Enables a PVST or PVRST VLAN instance on the interface and enters PVSTAG or PVRSTAG VLAN configuration mode.
spanning-tree repag
To enter the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode, use the spanning-tree repag command in global configuration mode.
Syntax Description
protocol instance identifier String of a maximum of 255 characters that identifies the protocol instance.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Refer to the Implementing Multiple Spanning Tree Protocol module of the Cisco ASR 9000 Series Aggregation Services Router L2VPN and Ethernet Services Configuration Guide for more information.
Task ID
Examples
The following example shows how to enter the REPAG configuration mode:
RP/0/RSP0/CPU0:router(config)# spanning-tree repag a RP/0/RSP0/CPU0:router(config-repag)#Related Commands
Command
Description
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Displays the values currently used for populating the BPDUs sent by all ports.
transmit hold-count
To set the transmit hold count performance parameter, use the transmit hold-count command in MSTP configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to set the bridge transmit hold-count parameter to 8:
RP/0/RSP0/CPU0:router(config)# spanning-tree mst A RP/0/RSP0/CPU0:router(config-mstp)# transmit hold-count 8vlan
To enable a PVST or PVRST VLAN instance on the interface and enter PVSTAG or PVRSTAG VLAN configuration mode, use the vlan command in PVSTAG or PVRSTAG configuration submode.
Syntax Description
vlan-id Specifies the VLAN identifier. The range of the VLAN ID is between 1 to 4094.
Note There is a limit of 200 VLANs per physical interface and 16000 VLANs across the system.
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to enable a VLAN in the PVSTAG configuration mode:
RP/0/RSP0/CPU0:router(config)# spanning-tree pvstag A RP/0/RSP0/CPU0:router(config-pvstag)# interface GigabitEthernet 0/3/03 RP/0/RSP0/CPU0:router(config-pvstag-if)# vlan 100 RP/0/RSP0/CPU0:router(config-pvstag-if-vlan)#Related Commands
Command
Description
Enables packet debugging for sent and received PVRSTAG packets.
Enables packet debugging for sent and received PVSTAG packets.
Enters PVST or PVRST Access Gateway Interface configuration submode and enables either PVSTAG or PVRSTAG for the specified port.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
Enters the Per VLAN Rapid Spanning Tree Access Gateway (PVRSTAG) configuration submode.
Enters the Per VLAN Spanning Tree Access Gateway (PVSTAG) configuration submode.
vlan-ids (MSTAG/REPAG)
To associate a set of VLAN IDs with the current MSTI, use the vlan-id command in MSTAG or REPAG instance configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to use the vlan-id command:
RP/0/RSP0/CPU0:router(config-mstag-inst)# vlan-id 2-1005Related Commands
Command
Description
Enables MSTAG packet debugging.
Enables Resilient Ethernet Protocol (REP) Access Gateway debugging commands.
Enter the MSTAG interface configuration submode, and enables MSTAG for the specified port.
Enters MSTAG Instance configuration mode or REPAG Instance configuration mode.
Enters the MST Access Gateway configuration submode.
Enters the Resilient Ethernet Protocol Access Gateway (REPAG) configuration submode.
Displays the values currently used for populating the BPDUs sent by all ports.
Displays the values currently used for populating the BPDUs sent by all ports.
vlan-id (MSTP)
To associate a set of VLAN IDs with the current MSTI, use the vlan-id command in MSTI configuration submode.
Syntax Description
Command History
Usage Guidelines
To use this command, you must be in a user group associated with a task group that includes appropriate task IDs. If the user group assignment is preventing you from using a command, contact your AAA administrator for assistance.
Task ID
Examples
The following example shows how to use the vlan-id command:
RP/0/RSP0/CPU0:router(config-mstp-inst)# vlan-id 2-1005Related Commands
Command
Description
Enables debugging for sent and received MSTP packets.
Enables debugging protocol-state changes such as port role or state changes, topology change notification.
Enters the multiple spanning tree instance (MSTI) configuration submode.
Enters the MSTP configuration submode
Displays the multiple spanning tree protocol status information.
