Users Guide

Split a Stack........................................................................................................................... 1035
Managing Redundant Stack Management......................................................................1035
Resetting a Unit on a Stack................................................................................................1036
Verify a Stack Configuration..............................................................................................1036
Using Show Commands...............................................................................................1036
Troubleshooting a Switch Stack....................................................................................... 1039
Failure Scenarios.............................................................................................................1041
Upgrading a Switch Stack............................................................................................ 1044
Upgrading a Single Stack Unit..................................................................................... 1045
57 Storm Control...................................................................................................................1047
Configure Storm Control................................................................................................... 1047
Configuring Storm Control from INTERFACE Mode..............................................1048
Configuring Storm Control from CONFIGURATION Mode..................................1048
58 Spanning Tree Protocol (STP)....................................................................................... 1050
Protocol Overview...............................................................................................................1050
Configure Spanning Tree....................................................................................................1051
Related Configuration Tasks........................................................................................ 1051
Important Points to Remember...................................................................................1051
Configuring Interfaces for Layer 2 Mode........................................................................1052
Enabling Spanning Tree Protocol Globally.....................................................................1053
Adding an Interface to the Spanning Tree Group.........................................................1056
Removing an Interface from the Spanning Tree Group..............................................1056
Modifying Global Parameters............................................................................................1056
Modifying Interface STP Parameters................................................................................1057
Enabling PortFast................................................................................................................. 1058
Prevent Network Disruptions with BPDU Guard...........................................................1059
Global BPDU Filtering..........................................................................................................1061
Interface BPDU Filtering..................................................................................................... 1062
Selecting STP Root.............................................................................................................. 1062
STP Root Guard....................................................................................................................1063
Root Guard Scenario.....................................................................................................1063
Configuring Root Guard...............................................................................................1064
Enabling SNMP Traps for Root Elections and Topology Changes............................1065
Configuring Spanning Trees as Hitless............................................................................1065
STP Loop Guard................................................................................................................... 1066
Configuring Loop Guard...............................................................................................1067
Displaying STP Guard Configuration...............................................................................1068
59 SupportAssist....................................................................................................................1070
Configuring SupportAssist Using a Configuration Wizard...........................................1071
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