Cisco Catalyst 4500 Series Administration Guide

Contents
20
Software Configuration Guide—Release IOS XE 3.6.0E and IOS 15.2(2)E
OL-30933-01
STP Timers 21-4
Creating the STP Topology 21-5
STP Port States 21-5
MAC Address Allocation 21-6
STP and IEEE 802.1Q Trunks 21-6
Per-VLAN Rapid Spanning Tree 21-6
Default STP Configuration 21-7
Configuring STP 21-7
Enabling STP 21-8
Enabling the Extended System ID 21-9
Configuring the Root Bridge 21-9
Configuring a Secondary Root Switch 21-12
Configuring STP Port Priority 21-13
Configuring STP Port Cost 21-15
Configuring the Bridge Priority of a VLAN 21-17
Configuring the Hello Time 21-17
Configuring the Maximum Aging Time for a VLAN 21-18
Configuring the Forward-Delay Time for a VLAN 21-19
Disabling Spanning Tree Protocol 21-20
Enabling Per-VLAN Rapid Spanning Tree 21-20
Specifying the Link Type 21-21
Restarting Protocol Migration 21-21
About MST 21-22
IEEE 802.1s MST 21-22
IEEE 802.1w RSTP 21-23
RSTP Port Roles 21-24
RSTP Port States 21-24
MST-to-SST Interoperability 21-24
Common Spanning Tree 21-25
MST Instances 21-26
MST Configuration Parameters 21-26
MST Regions 21-26
MST Region Overview 21-26
Boundary Ports 21-27
IST Master 21-27
Edge Ports 21-27
Link Type 21-28
Message Age and Hop Count 21-28
MST-to-PVST+ Interoperability 21-28

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