Administrator Guide

Enabling SNMP Traps for Root Elections and Topology Changes........................................................................... 921
Conguring Spanning Trees as Hitless.........................................................................................................................921
STP Loop Guard............................................................................................................................................................. 921
Conguring Loop Guard..........................................................................................................................................923
Displaying STP Guard Conguration........................................................................................................................... 923
54 SupportAssist.......................................................................................................................................... 925
Conguring SupportAssist Using a Conguration Wizard........................................................................................926
Conguring SupportAssist Manually........................................................................................................................... 926
Conguring SupportAssist Activity............................................................................................................................. 928
Conguring SupportAssist Company..........................................................................................................................929
Conguring SupportAssist Person.............................................................................................................................. 930
Conguring SupportAssist Server...............................................................................................................................930
Viewing SupportAssist Conguration.......................................................................................................................... 931
55 System Time and Date.............................................................................................................................933
Network Time Protocol.................................................................................................................................................933
Protocol Overview...................................................................................................................................................934
Congure the Network Time Protocol..................................................................................................................934
Enabling NTP........................................................................................................................................................... 935
Conguring NTP Broadcasts................................................................................................................................. 935
Disabling NTP on an Interface................................................................................................................................936
Conguring a Source IP Address for NTP Packets............................................................................................. 936
Conguring NTP Authentication............................................................................................................................936
Dell Networking OS Time and Date.............................................................................................................................939
Conguration Task List ...........................................................................................................................................939
Setting the Time and Date for the Switch Software Clock................................................................................939
Setting the Timezone..............................................................................................................................................939
Set Daylight Saving Time........................................................................................................................................940
Setting Daylight Saving Time Once.......................................................................................................................940
Setting Recurring Daylight Saving Time................................................................................................................ 941
56 Tunneling................................................................................................................................................. 943
Conguring a Tunnel......................................................................................................................................................943
Conguring Tunnel Keepalive Settings........................................................................................................................944
Conguring a Tunnel Interface.....................................................................................................................................944
Conguring Tunnel Allow-Remote Decapsulation......................................................................................................945
Conguring the Tunnel Source Anylocal.....................................................................................................................945
57 Uplink Failure Detection (UFD).................................................................................................................947
Feature Description....................................................................................................................................................... 947
How Uplink Failure Detection Works........................................................................................................................... 948
UFD and NIC Teaming...................................................................................................................................................949
Important Points to Remember................................................................................................................................... 949
Conguring Uplink Failure Detection...........................................................................................................................950
Clearing a UFD-Disabled Interface............................................................................................................................... 951
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