User Guide

Contents
9
Catalyst 6500 Series Switch Cisco IOS Software Configuration Guide—Release 12.1 E
78-14099-04
Configuring the Hello Time 32
Configuring the Forward-Delay Time for a VLAN 32
Configuring the Maximum Aging Time for a VLAN 33
Enabling Rapid-PVST 33
Configuring IEEE 802.1s MST 34
Enabling MST 34
Displaying MST Configurations 36
Configuring MST Instance Parameters 39
Configuring MST Instance Port Parameters 40
Restarting Protocol Migration 40
CHAPTER 16 Configuring Optional STP Features 1
Understanding How PortFast Works 2
Understanding How BPDU Guard Works 2
Understanding How PortFast BPDU Filtering Works 2
Understanding How UplinkFast Works 3
Understanding How BackboneFast Works 4
Understanding How EtherChannel Guard Works 6
Understanding How Root Guard Works 6
Understanding How Loop Guard Works 6
Enabling PortFast 8
Enabling PortFast BPDU Filtering 10
Enabling BPDU Guard 11
Enabling UplinkFast 12
Enabling BackboneFast 13
Enabling EtherChannel Guard 14
Enabling Root Guard 14
Enabling Loop Guard 15
CHAPTER 17 Configuring IP Unicast Layer 3 Switching on Supervisor Engine 2 1
Understanding How Layer 3 Switching Works 1
Understanding Hardware Layer 3 Switching on PFC2 and DFCs 2
Understanding Layer 3-Switched Packet Rewrite 2
Default Hardware Layer 3 Switching Configuration 4
Layer 3 Switching Configuration Guidelines and Restrictions 4
Configuring Hardware Layer 3 Switching 5
Displaying Hardware Layer 3 Switching Statistics 6