Deployment Guide

Resetting a Unit on a Stack....................................................................................................................................775
Removing an Aggregator from a Stack................................................................................................................. 775
Merging Two Operational Stacks........................................................................................................................... 775
Verifying a Stack Conguration....................................................................................................................................776
Using Show Commands..........................................................................................................................................776
Troubleshooting a Switch Stack...................................................................................................................................776
Failure Scenarios.......................................................................................................................................................777
Upgrading a Switch Stack.............................................................................................................................................779
Upgrading a Single Stack Unit......................................................................................................................................780
54 Storm Control...........................................................................................................................................781
Congure Storm Control................................................................................................................................................781
Conguring Storm Control from INTERFACE Mode............................................................................................781
Conguring Storm Control from CONFIGURATION Mode................................................................................ 782
55 Broadcast Storm Control......................................................................................................................... 783
Supported Modes.......................................................................................................................................................... 783
Disabling Broadcast Storm Control..............................................................................................................................783
Displaying Broadcast-Storm Control Status............................................................................................................... 783
Conguring Storm Control............................................................................................................................................783
56 Spanning Tree Protocol (STP)................................................................................................................. 784
Protocol Overview......................................................................................................................................................... 784
Congure Spanning Tree...............................................................................................................................................784
Related Conguration Tasks................................................................................................................................... 785
Important Points to Remember..............................................................................................................................785
Conguring Interfaces for Layer 2 Mode....................................................................................................................786
Enabling Spanning Tree Protocol Globally................................................................................................................... 787
Adding an Interface to the Spanning Tree Group...................................................................................................... 789
Removing an Interface from the Spanning Tree Group.............................................................................................789
Modifying Global Parameters....................................................................................................................................... 789
Modifying Interface STP Parameters..........................................................................................................................790
Enabling Port Fast......................................................................................................................................................... 790
Prevent Network Disruptions with BPDU Guard..................................................................................................791
Global BPDU Filtering....................................................................................................................................................793
Interface BPDU Filtering......................................................................................................................................... 793
Selecting STP Root....................................................................................................................................................... 794
STP Root Guard.............................................................................................................................................................795
Root Guard Scenario............................................................................................................................................... 795
Conguring Root Guard..........................................................................................................................................796
SNMP Traps for Root Elections and Topology Changes...........................................................................................797
Displaying STP Guard Conguration............................................................................................................................797
57 SupportAssist.......................................................................................................................................... 798
Conguring SupportAssist Using a Conguration Wizard........................................................................................ 799
Conguring SupportAssist Manually........................................................................................................................... 799
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