Deployment Guide

Table Of Contents
Recover from Stack Link Flaps..............................................................................................................................888
Recover from a Card Problem State on a Stack...............................................................................................888
Chapter 50: Storm Control........................................................................................................890
Configure Storm Control...............................................................................................................................................890
Configuring Storm Control from INTERFACE Mode........................................................................................890
Configuring Storm Control from CONFIGURATION Mode............................................................................. 891
PFC Storm.........................................................................................................................................................................891
Detect PFC Storm.....................................................................................................................................................891
Restore Queue Drop State..................................................................................................................................... 892
View Details of Storm Control PFC...................................................................................................................... 892
Chapter 51: Spanning Tree Protocol (STP)................................................................................ 894
Protocol Overview..........................................................................................................................................................894
Configure Spanning Tree.............................................................................................................................................. 894
Important Points to Remember...................................................................................................................................895
Configuring Interfaces for Layer 2 Mode..................................................................................................................896
Enabling Spanning Tree Protocol Globally................................................................................................................ 897
Adding an Interface to the Spanning Tree Group...................................................................................................898
Modifying Global Parameters.......................................................................................................................................899
Modifying Interface STP Parameters........................................................................................................................ 900
Enabling PortFast........................................................................................................................................................... 900
Prevent Network Disruptions with BPDU Guard............................................................................................... 901
Selecting STP Root........................................................................................................................................................ 903
STP Root Guard.............................................................................................................................................................. 903
Root Guard Scenario................................................................................................................................................903
Configuring Root Guard.......................................................................................................................................... 904
Enabling SNMP Traps for Root Elections and Topology Changes..................................................................... 905
Configuring Spanning Trees as Hitless......................................................................................................................905
STP Loop Guard..............................................................................................................................................................905
Configuring Loop Guard.......................................................................................................................................... 906
Displaying STP Guard Configuration.......................................................................................................................... 907
Chapter 52: SupportAssist........................................................................................................ 908
Configuring SupportAssist Using a Configuration Wizard.................................................................................... 908
Configuring SupportAssist Manually.......................................................................................................................... 909
Configuring SupportAssist Activity............................................................................................................................. 910
Configuring SupportAssist Company.......................................................................................................................... 912
Configuring SupportAssist Person.............................................................................................................................. 912
Configuring SupportAssist Server............................................................................................................................... 913
Viewing SupportAssist Configuration......................................................................................................................... 914
Chapter 53: System Time and Date............................................................................................ 916
Network Time Protocol.................................................................................................................................................. 916
Protocol Overview..................................................................................................................................................... 917
Configure the Network Time Protocol..................................................................................................................917
Enabling NTP...............................................................................................................................................................917
Configuring NTP Broadcasts.................................................................................................................................. 918
Disabling NTP on an Interface................................................................................................................................ 918
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