Users Guide

Managing Overload on Startup........................................................................................................984
Enabling and Disabling a Port using SNMP......................................................................................985
Fetch Dynamic MAC Entries using SNMP........................................................................................985
Deriving Interface Indices.................................................................................................................987
Monitor Port-Channels.................................................................................................................... 988
Troubleshooting SNMP Operation.................................................................................................. 989
53 Storm Control.................................................................................................990
Configure Storm Control................................................................................................................. 990
Configuring Storm Control from INTERFACE Mode.................................................................990
Configuring Storm Control from CONFIGURATION Mode...................................................... 991
54 Spanning Tree Protocol (STP)......................................................................992
Protocol Overview............................................................................................................................992
Configure Spanning Tree................................................................................................................. 992
Related Configuration Tasks...................................................................................................... 992
Important Points to Remember....................................................................................................... 992
Configuring Interfaces for Layer 2 Mode.........................................................................................993
Enabling Spanning Tree Protocol Globally......................................................................................994
Adding an Interface to the Spanning Tree Group...........................................................................996
Modifying Global Parameters...........................................................................................................997
Modifying Interface STP Parameters............................................................................................... 998
Enabling PortFast..............................................................................................................................998
Preventing Network Disruptions with BPDU Guard........................................................................999
Selecting STP Root..........................................................................................................................1001
STP Root Guard.............................................................................................................................. 1002
Root Guard Scenario................................................................................................................ 1002
Configuring Root Guard...........................................................................................................1003
Enabling SNMP Traps for Root Elections and Topology Changes...............................................1004
STP Loop Guard..............................................................................................................................1004
Configuring Loop Guard.......................................................................................................... 1005
Displaying STP Guard Configuration............................................................................................. 1006
55 System Time and Date................................................................................ 1008
Network Time Protocol..................................................................................................................1008
Protocol Overview....................................................................................................................1009
Configure the Network Time Protocol.................................................................................... 1010
Enabling NTP.............................................................................................................................1010
Configuring NTP Broadcasts.................................................................................................... 1010
Disabling NTP on an Interface.................................................................................................. 1011
Configuring a Source IP Address for NTP Packets...................................................................1011
Configuring NTP Authentication...............................................................................................1011
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