Cisco 4500M Command Reference Manual page 470

Chapter2 Cisco IOS Commands for the Catalyst 4500 Series Switches
spanning-tree mst root
This example shows how to set the priority and timer values for the bridge:
Switch(config)# spanning-tree mst 0 root primary diameter 7 hello-time 2
Switch(config)# spanning-tree mst 5 root primary
Switch(config)#
Related Commands
show spanning-tree mst
Catalyst4500 Series SwitchCiscoIOS Command Reference—Release 12.2(18)EW
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