Users Guide

Monitoring BGP sessions via SNMP...........................................................................................................................862
Monitor Port-Channels................................................................................................................................................. 864
Enabling an SNMP Agent to Notify Syslog Server Failure....................................................................................... 865
Troubleshooting SNMP Operation...............................................................................................................................866
Transceiver Monitoring..................................................................................................................................................867
52 Stacking.................................................................................................................................................. 869
Stacking Overview........................................................................................................................................................ 869
Cross Platform Stacking.........................................................................................................................................869
Stack Management Roles.......................................................................................................................................870
Stack Master Election............................................................................................................................................. 870
Virtual IP....................................................................................................................................................................874
Failover Roles............................................................................................................................................................874
MAC Addressing on Stacks.................................................................................................................................... 874
Stacking LAG............................................................................................................................................................877
Supported Stacking Topologies.............................................................................................................................. 877
High Availability on Stacks...................................................................................................................................... 878
Management Access on Stacks.............................................................................................................................879
Important Points to Remember................................................................................................................................... 880
Stacking Installation Tasks............................................................................................................................................ 880
Create a Stack......................................................................................................................................................... 880
Add Units to an Existing Stack...............................................................................................................................883
Split a Stack............................................................................................................................................................. 886
Stacking Conguration Tasks.......................................................................................................................................886
Assigning Unit Numbers to Units in an Stack...................................................................................................... 886
Creating a Virtual Stack Unit on a Stack.............................................................................................................. 886
Displaying Information about a Stack.................................................................................................................... 887
Inuencing Management Unit Selection on a Stack........................................................................................... 890
Managing Redundancy on a Stack.........................................................................................................................891
Resetting a Unit on a Stack.................................................................................................................................... 891
Verify a Stack Conguration.........................................................................................................................................892
Displaying the Status of Stacking Ports................................................................................................................892
Removing a Unit from a Stack..................................................................................................................................... 893
Troubleshoot a Stack.....................................................................................................................................................895
Recover from Stack Link Flaps..............................................................................................................................895
Recover from a Card Problem State on a Stack................................................................................................. 895
53 Storm Control.......................................................................................................................................... 897
Congure Storm Control...............................................................................................................................................897
Conguring Storm Control from INTERFACE Mode...........................................................................................897
Conguring Storm Control from CONFIGURATION Mode................................................................................898
54 Spanning Tree Protocol (STP)................................................................................................................. 899
Protocol Overview.........................................................................................................................................................899
Congure Spanning Tree.............................................................................................................................................. 900
Related Conguration Tasks...................................................................................................................................900
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