User Guide

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Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
78-14099-04
Chapter 15 Configuring STP and IEEE 802.1s MST
Configuring IEEE 802.1s MST
Router(config-mst)# instance 1 vlan 2000-3000
Router(config-mst)# show pending
Pending MST configuration
Name [cisco]
Revision 2
Instance Vlans mapped
-------- ---------------------------------------------------------------------
0 1-1999,2500,3001-4094
1 2000-2499,2501-3000
-------------------------------------------------------------------------------
Router(config)# exit
Router(config)# no spanning-tree mst configuration
Router(config)# do show spanning-tree mst configuration
Name []
Revision 0
Instance Vlans mapped
-------- ---------------------------------------------------------------------
0 1-4094
-------------------------------------------------------------------------------
Displaying MST Configurations
To display MST configurations, perform these tasks in MST mode:
These examples show how to display spanning tree VLAN configurations in MST mode:
Router(config)# spanning-tree mst configuration
Router(config-mst)# instance 1 vlan 1-10
Router(config-mst)# name cisco
Router(config-mst)# revision 1
Router(config-mst)# ^Z
Router# show spanning-tree mst configuration
Name [cisco]
Revision 1
Instance Vlans mapped
-------- ---------------------------------------------------------------------
0 11-4094
1 1-10
-------------------------------------------------------------------------------
Command Purpose
Step 1
Router# show spanning-tree mst configuration
Displays the active configuration.
Step 2
Router# show spanning-tree mst [detail]
Displays information about the MST instances currently
running.
Step 3
Router# show spanning-tree mst instance-id
[detail]
Displays information about a specific MST instance.
Step 4
Router# show spanning-tree mst interface
interface name [detail]
Displays information for a given port.
Step 5
Router# show spanning-tree mst number interface
interface name [detail]
Displays MST information for a given port and a given
instance.
Step 6
Router# show spanning-tree mst [x] [interface Y]
detail
Displays detailed MST information.
Step 7
Router# show spanning-tree vlan vlan_ID
Displays VLAN information in MST mode.