Reference Guide

Table Of Contents
Converting Four 10 GbE Ports to 40 GbE Ports for Stacking.........................................................920
Removing a Stack Group from Stacking Mode................................................................................921
Remove a Switch from a Stack.........................................................................................................921
Adding a Stack Unit........................................................................................................................... 921
Adding a Standalone Switch to a Stack............................................................................................922
Merging Two Stacks..........................................................................................................................923
Split a Stack....................................................................................................................................... 923
Managing Redundant Stack Management.......................................................................................924
Resetting a Unit on a Stack.............................................................................................................. 924
Verify a Stack Configuration.............................................................................................................925
Using Show Commands............................................................................................................. 925
Troubleshooting a Switch Stack...................................................................................................... 928
Failure Scenarios.........................................................................................................................930
Upgrading a Switch Stack...........................................................................................................932
Upgrading a Single Stack Unit.................................................................................................... 934
57 Storm Control................................................................................................. 935
Configure Storm Control..................................................................................................................935
Configuring Storm Control from INTERFACE Mode.................................................................935
Configuring Storm Control from CONFIGURATION Mode......................................................935
58 Spanning Tree Protocol (STP)......................................................................936
Protocol Overview............................................................................................................................936
Configure Spanning Tree................................................................................................................. 936
Related Configuration Tasks...................................................................................................... 936
Important Points to Remember..................................................................................................937
Configuring Interfaces for Layer 2 Mode.........................................................................................937
Enabling Spanning Tree Protocol Globally......................................................................................938
Adding an Interface to the Spanning Tree Group...........................................................................940
Removing an Interface from the Spanning Tree Group..................................................................941
Modifying Global Parameters........................................................................................................... 941
Modifying Interface STP Parameters................................................................................................942
Enabling PortFast..............................................................................................................................943
Prevent Network Disruptions with BPDU Guard.............................................................................943
Global BPDU Filtering.......................................................................................................................945
Interface BPDU Filtering...................................................................................................................946
Selecting STP Root............................................................................................................................947
STP Root Guard.................................................................................................................................947
Root Guard Scenario...................................................................................................................947
Configuring Root Guard.............................................................................................................948
Enabling SNMP Traps for Root Elections and Topology Changes.................................................949
Configuring Spanning Trees as Hitless............................................................................................949