Owners Manual

Failover Roles..............................................................................................................................890
MAC Addressing on S-Series Stacks.......................................................................................... 890
Stacking LAG............................................................................................................................... 892
Supported Stacking Topologies................................................................................................. 892
High Availability on S-Series Stacks........................................................................................... 893
Management Access on S-Series Stacks................................................................................... 894
Important Points to Remember—S4820T Stacking........................................................................894
S-Series Stacking Installation Tasks................................................................................................. 895
Create an S-Series Stack.............................................................................................................895
Add Units to an Existing S-Series Stack..................................................................................... 900
Split an S-Series Stack................................................................................................................ 903
S-Series Stacking Configuration Tasks............................................................................................ 903
Assigning Unit Numbers to Units in an S-Series Stack..............................................................903
Creating a Virtual Stack Unit on an S-Series Stack....................................................................903
Displaying Information about an S-Series Stack....................................................................... 904
Influencing Management Unit Selection on an S-Series Stack................................................ 906
Managing Redundancy on an S-Series Stack............................................................................906
Resetting a Unit on an S-Series Stack........................................................................................ 907
Verify a Stack Configuration.............................................................................................................907
Displaying the Status of Stacking Ports......................................................................................907
Remove Units or Front End Ports from a Stack.............................................................................. 909
Removing a Unit from an S-Series Stack...................................................................................909
Removing Front End Port Stacking............................................................................................ 910
Troubleshoot an S-Series Stack....................................................................................................... 910
Recover from Stack Link Flaps.................................................................................................... 911
Recover from a Card Problem State on an S-Series Stack........................................................ 911
Recover from a Card Mismatch State on an S-Series Stack......................................................912
52 Storm Control................................................................................................. 914
Configure Storm Control..................................................................................................................914
Configuring Storm Control from INTERFACE Mode................................................................. 914
Configuring Storm Control from CONFIGURATION Mode...................................................... 914
53 Spanning Tree Protocol (STP)...................................................................... 915
Protocol Overview............................................................................................................................ 915
Configure Spanning Tree..................................................................................................................915
Related Configuration Tasks.......................................................................................................915
Important Points to Remember........................................................................................................916
Configuring Interfaces for Layer 2 Mode.........................................................................................916
Enabling Spanning Tree Protocol Globally...................................................................................... 917
Adding an Interface to the Spanning Tree Group............................................................................919
Modifying Global Parameters...........................................................................................................920