Concept Guide

Add Tagged and Untagged Ports to a VLAN....................................................................................................... 938
Managing Overload on Startup....................................................................................................................................938
Enabling and Disabling a Port using SNMP................................................................................................................939
Fetch Dynamic MAC Entries using SNMP................................................................................................................. 939
Example of Deriving the Interface Index Number...................................................................................................... 941
MIB Objects for Viewing the System Image on Flash Partitions........................................................................941
Monitoring BGP sessions via SNMP............................................................................................................................941
Monitor Port-Channels................................................................................................................................................. 943
Troubleshooting SNMP Operation...............................................................................................................................944
Transceiver Monitoring..................................................................................................................................................944
Conguring SNMP context name............................................................................................................................... 945
51 Storm Control...........................................................................................................................................947
Congure Storm Control...............................................................................................................................................947
Conguring Storm Control from INTERFACE Mode...........................................................................................947
Conguring Storm Control from CONFIGURATION Mode................................................................................948
PFC Storm......................................................................................................................................................................948
Detect PFC Storm...................................................................................................................................................949
Restore Queue Drop State..................................................................................................................................... 949
View Details of Storm Control PFC.......................................................................................................................949
52 Spanning Tree Protocol (STP)..................................................................................................................951
Protocol Overview..........................................................................................................................................................951
Congure Spanning Tree.............................................................................................................................................. 952
Related Conguration Tasks...................................................................................................................................952
Important Points to Remember................................................................................................................................... 952
Conguring Interfaces for Layer 2 Mode....................................................................................................................953
Enabling Spanning Tree Protocol Globally.................................................................................................................. 954
Adding an Interface to the Spanning Tree Group......................................................................................................956
Modifying Global Parameters.......................................................................................................................................956
Modifying Interface STP Parameters.......................................................................................................................... 957
Enabling PortFast.......................................................................................................................................................... 958
Prevent Network Disruptions with BPDU Guard.................................................................................................958
Selecting STP Root.......................................................................................................................................................960
STP Root Guard.............................................................................................................................................................960
Root Guard Scenario................................................................................................................................................961
Conguring Root Guard...........................................................................................................................................961
Enabling SNMP Traps for Root Elections and Topology Changes...........................................................................962
Conguring Spanning Trees as Hitless........................................................................................................................962
STP Loop Guard............................................................................................................................................................ 963
Conguring Loop Guard..........................................................................................................................................964
Displaying STP Guard Conguration........................................................................................................................... 965
53 SupportAssist..........................................................................................................................................966
Conguring SupportAssist Using a Conguration Wizard........................................................................................ 967
Conguring SupportAssist Manually........................................................................................................................... 967
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