Configuring Mst; Enabling Mst - Cisco 4500M Software Manual

Chapter 16 Understanding and Configuring Multiple Spanning Trees

Configuring MST

The following sections describe how to configure MST:
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Enabling MST

To enable and configure MST on a Catalyst 4006 switch with Supervisor Engine III, perform this task:
Command
Step 1
Switch(config)# spanning-tree mode mst
Step 2
Switch(config)# spanning-tree mst configuration
Step 3
Switch(config-mst)# show current
Step 4
Switch(config-mst)# name name
Step 5
Switch(config-mst)# revision revision_number
Step 6
Switch(config-mst)# instance instance_number vlan
vlan_range
Step 7
Switch(config-mst)# show pending
Step 8
Switch(config-mst)# end
Step 9
Switch# show spanning-tree mst configuration
This example show how to enable MST:
Switch# configure terminal
Enter configuration commands, one per line.
Switch(config)# spanning-tree mode mst
Switch(config)# spanning-tree mst configuration
OL-6696-01
Enabling MST, page 16-9
Configuring MST Instance Parameters, page 16-11
Configuring MST Instance Port Parameters, page 16-12
Restarting Protocol Migration, page 16-12
Displaying MST Configurations, page 16-13
Purpose
Enters MST mode.
Enters MST configuration submode.
You can use the no keyword to clear the MST
configuration.
Displays the current MST configuration.
Sets the MST region name.
Sets the MST configuration revision number.
Maps the VLANs to an MST instance.
If you do not specify the vlan keyword, you can use the
no keyword to unmap all the VLANs that were mapped
to an MST instance.
If you specify the vlan keyword, you can use the no
keyword to unmap a specified VLAN from an MST
instance.
Displays the new MST configuration to be applied.
Applies the configuration and exit MST configuration
submode.
Displays the current MST configuration.
End with CNTL/Z.
Software Configuration Guide—Release 12.2(25)EW
Configuring MST
16-9