Service Manual

Monitor Port-Channels................................................................................................................................................. 790
Troubleshooting SNMP Operation................................................................................................................................791
48 Storm Control.......................................................................................................................................... 792
Congure Storm Control...............................................................................................................................................792
Conguring Storm Control from INTERFACE Mode...........................................................................................792
Conguring Storm Control from CONFIGURATION Mode................................................................................ 793
PFC Storm...................................................................................................................................................................... 793
Detect PFC Storm................................................................................................................................................... 794
Restore Queue Drop State......................................................................................................................................794
View Details of Storm Control PFC....................................................................................................................... 794
49 Spanning Tree Protocol (STP)................................................................................................................. 796
Protocol Overview......................................................................................................................................................... 796
Congure Spanning Tree...............................................................................................................................................796
Related Conguration Tasks................................................................................................................................... 797
Important Points to Remember....................................................................................................................................797
Conguring Interfaces for Layer 2 Mode....................................................................................................................798
Enabling Spanning Tree Protocol Globally...................................................................................................................799
Adding an Interface to the Spanning Tree Group.......................................................................................................801
Modifying Global Parameters........................................................................................................................................801
Modifying Interface STP Parameters..........................................................................................................................802
Enabling PortFast.......................................................................................................................................................... 803
Prevent Network Disruptions with BPDU Guard.................................................................................................804
Selecting STP Root....................................................................................................................................................... 806
STP Root Guard.............................................................................................................................................................806
Root Guard Scenario...............................................................................................................................................806
Conguring Root Guard.......................................................................................................................................... 807
Enabling SNMP Traps for Root Elections and Topology Changes...........................................................................808
Conguring Spanning Trees as Hitless........................................................................................................................808
STP Loop Guard............................................................................................................................................................ 808
Conguring Loop Guard..........................................................................................................................................809
Displaying STP Guard Conguration............................................................................................................................810
50 SupportAssist........................................................................................................................................... 811
Conguring SupportAssist Using a Conguration Wizard.........................................................................................812
Conguring SupportAssist Manually............................................................................................................................812
Conguring SupportAssist Activity.............................................................................................................................. 814
Conguring SupportAssist Company...........................................................................................................................815
Conguring SupportAssist Person............................................................................................................................... 815
Conguring SupportAssist Server................................................................................................................................816
Viewing SupportAssist Conguration...........................................................................................................................817
51 System Time and Date.............................................................................................................................. 819
Network Time Protocol..................................................................................................................................................819
Protocol Overview...................................................................................................................................................820
Congure the Network Time Protocol...................................................................................................................821
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