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Conguring Storm Control from CONFIGURATION Mode................................................................................904
PFC Storm......................................................................................................................................................................904
Detect PFC Storm...................................................................................................................................................905
Restore Queue Drop State..................................................................................................................................... 905
View Details of Storm Control PFC.......................................................................................................................905
51 Spanning Tree Protocol (STP).................................................................................................................. 907
Protocol Overview......................................................................................................................................................... 907
Congure Spanning Tree.............................................................................................................................................. 908
Related Conguration Tasks...................................................................................................................................908
Important Points to Remember................................................................................................................................... 908
Conguring Interfaces for Layer 2 Mode................................................................................................................... 909
Enabling Spanning Tree Protocol Globally................................................................................................................... 910
Adding an Interface to the Spanning Tree Group.......................................................................................................912
Modifying Global Parameters........................................................................................................................................912
Modifying Interface STP Parameters...........................................................................................................................913
Enabling PortFast........................................................................................................................................................... 914
Prevent Network Disruptions with BPDU Guard..................................................................................................914
Selecting STP Root........................................................................................................................................................916
STP Root Guard............................................................................................................................................................. 916
Root Guard Scenario................................................................................................................................................917
Conguring Root Guard...........................................................................................................................................917
Enabling SNMP Traps for Root Elections and Topology Changes........................................................................... 918
Conguring Spanning Trees as Hitless.........................................................................................................................918
STP Loop Guard............................................................................................................................................................. 919
Conguring Loop Guard..........................................................................................................................................920
Displaying STP Guard Conguration............................................................................................................................ 921
52 SupportAssist.......................................................................................................................................... 922
Conguring SupportAssist Using a Conguration Wizard........................................................................................923
Conguring SupportAssist Manually........................................................................................................................... 923
Conguring SupportAssist Activity............................................................................................................................. 925
Conguring SupportAssist Company..........................................................................................................................926
Conguring SupportAssist Person...............................................................................................................................927
Conguring SupportAssist Server............................................................................................................................... 927
Viewing SupportAssist Conguration..........................................................................................................................928
53 System Time and Date.............................................................................................................................930
Network Time Protocol.................................................................................................................................................930
Protocol Overview....................................................................................................................................................931
Congure the Network Time Protocol...................................................................................................................931
Enabling NTP............................................................................................................................................................932
Conguring NTP Broadcasts..................................................................................................................................932
Disabling NTP on an Interface................................................................................................................................933
Conguring a Source IP Address for NTP Packets............................................................................................. 933
Conguring NTP Authentication............................................................................................................................933
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