Cisco Catalyst 4500 Series Administration Guide

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Software Configuration Guide—Release IOS XE 3.5.0SG and IOS 15.2(2)SG
OL-27597-01
Chapter 22 Configuring STP and MST
Configuring MST
Switch(config-mst)# instance 1 vlan 2000-3000
Switch(config-mst)# no instance 1 vlan 1500
Switch(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
-------------------------------------------------------------------------------
Switch(config-mst)# end
Switch(config)# no spanning-tree mst configuration
Switch(config)# end
Switch# show spanning-tree mst configuration
Name []
Revision 0
Instance Vlans mapped
-------- ---------------------------------------------------------------------
0 1-4094
-------------------------------------------------------------------------------
Configuring MST Instance Parameters
To configure MST instance parameters, perform this task:
This example shows how to configure MST instance parameters:
Switch(config)# spanning-tree mst 1 priority ?
<0-61440> bridge priority in increments of 4096
Switch(config)# spanning-tree mst 1 priority 1
% Bridge Priority must be in increments of 4096.
% Allowed values are:
0 4096 8192 12288 16384 20480 24576 28672
32768 36864 40960 45056 49152 53248 57344 61440
Switch(config)# spanning-tree mst 1 priority 49152
Switch(config)#
Switch(config)# spanning-tree mst 0 root primary
mst 0 bridge priority set to 24576
mst bridge max aging time unchanged at 20
mst bridge hello time unchanged at 2
mst bridge forward delay unchanged at 15
Switch(config)# ^Z
Switch#
Command Purpose
Step 1
Switch(config)# spanning-tree mst X priority Y
Configures the priority for an MST instance.
Step 2
Switch(config)# spanning-tree mst X root [primary |
secondary]
Configures the bridge as root for an MST instance.
Step 3
Switch(config)# Ctrl-Z
Exits configuration mode.
Step 4
Switch# show spanning-tree mst
Verifies the configuration.

Cisco Catalyst 4500 Series Specifications

General

Series	Catalyst 4500 Series
Category	Switch
Layer Support	Layer 2, Layer 3
Form Factor	Modular chassis
Stackable	No
Chassis Slots	3, 6, 7, 10
Power Supply Options	AC, DC
Redundancy	Power supply, Supervisor engine
Network Management	Cisco IOS Software CLI, SNMP, Cisco Prime Infrastructure
Features	Security, QoS
Port Density	Up to 384 ports per chassis
Security Features	802.1X, ACLs, DHCP Snooping, Dynamic ARP Inspection, IP Source Guard
Supervisor Engine	8-E