Administrator Guide

Chapter 53: Stacking................................................................................................................ 906
Stacking Overview......................................................................................................................................................... 906
Stack Management Roles....................................................................................................................................... 906
Stack Master Election..............................................................................................................................................907
Virtual IP......................................................................................................................................................................909
Failover Roles.............................................................................................................................................................909
MAC Addressing on Stacks....................................................................................................................................909
Stacking LAG.............................................................................................................................................................. 910
Supported Stacking Topologies............................................................................................................................. 910
High Availability on Stacks....................................................................................................................................... 911
Management Access on Stacks.............................................................................................................................. 911
Mixed-mode Stacking............................................................................................................................................... 912
Important Points to Remember....................................................................................................................................913
Stacking Installation Tasks............................................................................................................................................ 913
Create a Stack............................................................................................................................................................914
Add Units to an Existing Stack............................................................................................................................... 917
Split a Stack............................................................................................................................................................... 920
Stacking Configuration Tasks...................................................................................................................................... 920
Assigning Unit Numbers to Units in an Stack.................................................................................................... 920
Creating a Virtual Stack Unit on a Stack.............................................................................................................920
Displaying Information about a Stack................................................................................................................... 921
Influencing Management Unit Selection on a Stack.........................................................................................923
Managing Redundancy on a Stack........................................................................................................................924
Resetting a Unit on a Stack....................................................................................................................................924
Enabling Mixed-mode Stacking............................................................................................................................. 924
Verify a Stack Configuration........................................................................................................................................925
Displaying the Status of Stacking Ports..............................................................................................................925
Remove Units or Front End Ports from a Stack..................................................................................................... 926
Removing a Unit from a Stack...............................................................................................................................926
Removing Front End Port Stacking...................................................................................................................... 927
Troubleshoot a Stack..................................................................................................................................................... 927
Recover from Stack Link Flaps..............................................................................................................................927
Recover from a Card Problem State on a Stack...............................................................................................928
Chapter 54: Storm Control........................................................................................................ 930
Configure Storm Control...............................................................................................................................................930
Configuring Storm Control from INTERFACE Mode........................................................................................930
Configuring Storm Control from CONFIGURATION Mode............................................................................. 931
Chapter 55: Spanning Tree Protocol (STP)............................................................................... 932
Protocol Overview..........................................................................................................................................................932
Configure Spanning Tree.............................................................................................................................................. 932
Important Points to Remember...................................................................................................................................933
Configuring Interfaces for Layer 2 Mode..................................................................................................................934
Enabling Spanning Tree Protocol Globally................................................................................................................ 935
Adding an Interface to the Spanning Tree Group...................................................................................................936
Modifying Global Parameters....................................................................................................................................... 937
Modifying Interface STP Parameters.........................................................................................................................938
26
Contents