Concept Guide

Assigning a VLAN Alias........................................................................................................................................... 922
Displaying the Ports in a VLAN.............................................................................................................................. 922
Add Tagged and Untagged Ports to a VLAN....................................................................................................... 923
Managing Overload on Startup....................................................................................................................................923
Enabling and Disabling a Port using SNMP................................................................................................................ 924
Fetch Dynamic MAC Entries using SNMP................................................................................................................. 924
Example of Deriving the Interface Index Number......................................................................................................926
MIB Objects for Viewing the System Image on Flash Partitions....................................................................... 926
Monitoring BGP sessions via SNMP...........................................................................................................................926
Monitor Port-Channels................................................................................................................................................. 928
Troubleshooting SNMP Operation...............................................................................................................................929
Transceiver Monitoring................................................................................................................................................. 929
Conguring SNMP context name............................................................................................................................... 930
49 Stacking.................................................................................................................................................. 932
Stacking Overview.........................................................................................................................................................932
Stack Management Roles.......................................................................................................................................932
Stack Master Election.............................................................................................................................................933
Virtual IP....................................................................................................................................................................934
Failover Roles........................................................................................................................................................... 934
MAC Addressing on Stacks....................................................................................................................................934
Stacking LAG........................................................................................................................................................... 936
Supported Stacking Topologies............................................................................................................................. 936
High Availability on Stacks......................................................................................................................................936
Management Access on Stacks.............................................................................................................................937
Important Points to Remember....................................................................................................................................937
Stacking Installation Tasks............................................................................................................................................ 938
Create a Stack..........................................................................................................................................................938
Add Units to an Existing Stack...............................................................................................................................942
Split a Stack..............................................................................................................................................................944
Stacking Conguration Tasks.......................................................................................................................................945
Assigning Unit Numbers to Units in an Stack...................................................................................................... 945
Creating a Virtual Stack Unit on a Stack.............................................................................................................. 945
Displaying Information about a Stack....................................................................................................................946
Inuencing Management Unit Selection on a Stack........................................................................................... 948
Managing Redundancy on a Stack........................................................................................................................948
Resetting a Unit on a Stack....................................................................................................................................949
Verify a Stack Conguration........................................................................................................................................ 949
Displaying the Status of Stacking Ports............................................................................................................... 949
Remove Units or Front End Ports from a Stack.........................................................................................................951
Removing a Unit from a Stack................................................................................................................................951
Removing Front End Port Stacking.......................................................................................................................952
Troubleshoot a Stack.....................................................................................................................................................952
Recover from Stack Link Flaps.............................................................................................................................. 952
Recover from a Card Problem State on a Stack..................................................................................................953
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