Service Manual

Enabling an SNMP Agent to Notify Syslog Server Failure..............................................................................849
Troubleshooting SNMP Operation.....................................................................................................................850
52 Stacking.............................................................................................................................................................. 851
Stacking Overview..................................................................................................................................................851
Stack Management Roles................................................................................................................................851
Stack Master Election...................................................................................................................................... 852
Virtual IP............................................................................................................................................................. 854
Failover Roles.................................................................................................................................................... 854
MAC Addressing on Stacks.............................................................................................................................854
Stacking LAG..................................................................................................................................................... 855
Supported Stacking Topologies....................................................................................................................856
High Availability on Stacks..............................................................................................................................856
Management Access on Stacks.....................................................................................................................857
Enabling Mixed-mode Stacking....................................................................................................................858
Important Points to Remember..........................................................................................................................858
Stacking Installation Tasks................................................................................................................................... 858
Create a Stack...................................................................................................................................................858
Add Units to an Existing Stack....................................................................................................................... 863
Split a Stack........................................................................................................................................................865
Stacking Configuration Tasks..............................................................................................................................865
Assigning Unit Numbers to Units in an Stack.............................................................................................866
Creating a Virtual Stack Unit on a Stack......................................................................................................866
Displaying Information about a Stack..........................................................................................................866
Influencing Management Unit Selection on a Stack................................................................................ 869
Managing Redundancy on a Stack...............................................................................................................869
Resetting a Unit on a Stack............................................................................................................................ 870
Verify a Stack Configuration................................................................................................................................ 870
Displaying the Status of Stacking Ports....................................................................................................... 870
Remove Units or Front End Ports from a Stack...............................................................................................872
Removing a Unit from a Stack.......................................................................................................................872
Removing Front End Port Stacking...............................................................................................................873
Troubleshoot a Stack.............................................................................................................................................873
Recover from Stack Link Flaps.......................................................................................................................873
Recover from a Card Problem State on a Stack........................................................................................874
53 Storm Control....................................................................................................................................................875
Configure Storm Control......................................................................................................................................875
Configuring Storm Control from INTERFACE Mode................................................................................ 875
Configuring Storm Control from CONFIGURATION Mode....................................................................876
54 Spanning Tree Protocol (STP).........................................................................................................................877
Protocol Overview................................................................................................................................................. 877
Configure Spanning Tree......................................................................................................................................877
Related Configuration Tasks..........................................................................................................................878
Important Points to Remember.......................................................................................................................... 878
Configuring Interfaces for Layer 2 Mode..........................................................................................................879
Contents
27