Concept Guide

MIB Objects for Viewing the System Image on Flash Partitions....................................................................... 898
Monitoring BGP sessions via SNMP...........................................................................................................................898
Monitor Port-Channels.................................................................................................................................................900
Enabling an SNMP Agent to Notify Syslog Server Failure........................................................................................901
Troubleshooting SNMP Operation...............................................................................................................................902
Transceiver Monitoring................................................................................................................................................. 903
Conguring SNMP context name............................................................................................................................... 904
52 Stacking.................................................................................................................................................. 905
Stacking Overview........................................................................................................................................................ 905
Cross Platform Stacking.........................................................................................................................................905
Stack Management Roles...................................................................................................................................... 906
Stack Master Election.............................................................................................................................................906
Virtual IP.................................................................................................................................................................... 910
Failover Roles............................................................................................................................................................910
MAC Addressing on Stacks.....................................................................................................................................910
Stacking LAG............................................................................................................................................................ 913
Supported Stacking Topologies.............................................................................................................................. 913
High Availability on Stacks.......................................................................................................................................914
Management Access on Stacks............................................................................................................................. 915
Important Points to Remember....................................................................................................................................916
Stacking Installation Tasks.............................................................................................................................................916
Create a Stack.......................................................................................................................................................... 916
Add Units to an Existing Stack............................................................................................................................... 919
Split a Stack..............................................................................................................................................................922
Stacking Conguration Tasks....................................................................................................................................... 922
Assigning Unit Numbers to Units in an Stack.......................................................................................................922
Creating a Virtual Stack Unit on a Stack.............................................................................................................. 922
Displaying Information about a Stack....................................................................................................................923
Inuencing Management Unit Selection on a Stack........................................................................................... 926
Managing Redundancy on a Stack........................................................................................................................ 927
Resetting a Unit on a Stack....................................................................................................................................927
Verify a Stack Conguration.........................................................................................................................................928
Displaying the Status of Stacking Ports................................................................................................................928
Removing a Unit from a Stack..................................................................................................................................... 929
Troubleshoot a Stack......................................................................................................................................................931
Recover from Stack Link Flaps...............................................................................................................................931
Recover from a Card Problem State on a Stack.................................................................................................. 931
53 Storm Control..........................................................................................................................................933
Congure Storm Control...............................................................................................................................................933
Conguring Storm Control from INTERFACE Mode...........................................................................................933
Conguring Storm Control from CONFIGURATION Mode................................................................................934
54 Spanning Tree Protocol (STP)................................................................................................................. 935
Protocol Overview.........................................................................................................................................................935
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