Cisco Systems WSC4500X16SFP Configuring MST

15-9
Software Configuration Guide—Release 12.2(25)SG
OL-7659-03
Chapter15 Understanding and Conf iguring Multiple Spanning Trees
Configuring MST
Configuring MST
The following sections describe how to configure MST:
•Enabling MST, page 15-9
•Configuring MST Instance Parameters, page 15-11
•Configuring MST Instance Port Parameters, page 15-12
•Restarting Protocol Migration, page 15-12
•Displaying MST Configurations, page 15-13
Enabling MST
To enable and configure MST on a Catalyst 4006 switch with Supervisor Engine III, perform this task:
This example show how to enable MST:
Switch# configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)# spanning-tree mode mst
Switch(config)# spanning-tree mst configuration
Command Purpose
Step1 Switch(config)# spanning-tree mode mst Enters MST mode.
Step2 Switch(config)# spanning-tree mst configuration Enters MST configuration submode.
You can use the no keyword to clear the MST
configuration.
Step3 Switch(config-mst)# show current Displays the current MST configuration.
Step4 Switch(config-mst)# name
name
Sets the MST region name.
Step5 Switch(config-mst)# revision
revision_number
Sets the MST configuration revision number.
Step6 Switch(config-mst)# instance
instance_number vlan
vlan_range
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.
Step7 Switch(config-mst)# show pending Displays the new MST configuration to be applied.
Step8 Switch(config-mst)# end Applies the configuration and exit MST configuration
submode.
Step9 Switch# show spanning-tree mst configuration Displays the current MST configuration.