Enabling Mst - Cisco Catalyst 4500 Series Software Configuration Manual

Chapter 23 Configuring STP and MST
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Enabling MST

To enable and configure MST on a switch, 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
Switch(config-mst)# show current
Current MST configuration
Name
Revision
Instance
--------
0
-------------------------------------------------------------------------------
Switch(config-mst)# name cisco
Switch(config-mst)# revision 2
Switch(config-mst)# instance 1 vlan 1
Switch(config-mst)# instance 2 vlan 1-1000
Switch(config-mst)# show pending
Pending MST configuration
Configuring MST Instance Parameters, page 23-30
Configuring MST Instance Port Parameters, page 23-31
Restarting Protocol Migration, page 23-32
Displaying MST Configurations, page 23-32
[]
0
Vlans mapped
---------------------------------------------------------------------
1-4094
Catalyst 4500 Series Switch, Cisco IOS Software Configuration Guide - Cisco IOS XE 3.9.xE and IOS 15.2(5)Ex
Purpose
Enters MST mode.
Enters MST configuration submode.
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, use the no
keyword to unmap all the VLANs that were mapped to an
MST instance.
If you specify the vlan keyword, 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.
Configuring MST
23-29