Cisco Catalyst 4500 Series Command Reference Guide

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Catalyst 4500 Series Switch Cisco IOS Command Reference—Release IOS XE 3.4.0SG and IOS 15.1(2)SG)
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Chapter 2 Cisco IOS Commands for the Catalyst 4500 Series Switches
spanning-tree mst max-age
spanning-tree mst max-age
To set the max-age timer for all the instances, use the spanning-tree mst max-age command. To return to
the default settings, use the no form of this command.
spanning-tree mst max-age seconds
no spanning-tree mst max-age
Syntax Description
Defaults The max-age timer is set for 20 seconds.
Command Modes Global configuration mode
Command History
Examples This example shows how to set the max-age timer:
Switch(config)# spanning-tree mst max-age 40
Switch(config)#
Related Commands
seconds Number of seconds to set the max-age timer for all the instances on the Catalyst 4500
series switch; valid values are from 6 to 40 seconds.
Release Modification
12.1(12c)EW Support for this command was introduced on the Catalyst 4500 series switch.
Command Description
show spanning-tree mst Displays MST protocol information.

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