Administrator Guide

Upgrading a Single Stack Unit......................................................................................................................................776
54 Storm Control.......................................................................................................................................... 777
Congure Storm Control............................................................................................................................................... 777
Conguring Storm Control from INTERFACE Mode........................................................................................... 777
Conguring Storm Control from CONFIGURATION Mode................................................................................ 778
55 Broadcast Storm Control......................................................................................................................... 779
Supported Modes.......................................................................................................................................................... 779
Disabling Broadcast Storm Control..............................................................................................................................779
Displaying Broadcast-Storm Control Status............................................................................................................... 779
Conguring Storm Control............................................................................................................................................779
56 Spanning Tree Protocol (STP)................................................................................................................. 780
Protocol Overview......................................................................................................................................................... 780
Congure Spanning Tree...............................................................................................................................................780
Related Conguration Tasks....................................................................................................................................781
Important Points to Remember.............................................................................................................................. 781
Conguring Interfaces for Layer 2 Mode....................................................................................................................782
Enabling Spanning Tree Protocol Globally...................................................................................................................783
Adding an Interface to the Spanning Tree Group...................................................................................................... 785
Removing an Interface from the Spanning Tree Group............................................................................................ 785
Modifying Global Parameters....................................................................................................................................... 785
Modifying Interface STP Parameters.......................................................................................................................... 786
Enabling Port Fast......................................................................................................................................................... 786
Prevent Network Disruptions with BPDU Guard................................................................................................. 787
Global BPDU Filtering....................................................................................................................................................789
Interface BPDU Filtering......................................................................................................................................... 789
Selecting STP Root....................................................................................................................................................... 790
STP Root Guard..............................................................................................................................................................791
Root Guard Scenario................................................................................................................................................791
Conguring Root Guard.......................................................................................................................................... 792
SNMP Traps for Root Elections and Topology Changes...........................................................................................793
Displaying STP Guard Conguration............................................................................................................................793
57 SupportAssist.......................................................................................................................................... 794
Conguring SupportAssist Using a Conguration Wizard........................................................................................ 795
Conguring SupportAssist Manually........................................................................................................................... 795
Conguring SupportAssist Activity..............................................................................................................................797
Conguring SupportAssist Company.......................................................................................................................... 798
Conguring SupportAssist Person...............................................................................................................................799
Conguring SupportAssist Server...............................................................................................................................799
Viewing SupportAssist Conguration......................................................................................................................... 800
58 System Time and Date.............................................................................................................................802
Supported Modes..........................................................................................................................................................802
26
Contents