Users Guide

Conguring Spanning Trees as Hitless.........................................................................................................................917
STP Loop Guard............................................................................................................................................................. 917
Conguring Loop Guard.......................................................................................................................................... 919
Displaying STP Guard Conguration............................................................................................................................919
54 SupportAssist...........................................................................................................................................921
Conguring SupportAssist Using a Conguration Wizard........................................................................................922
Conguring SupportAssist Manually........................................................................................................................... 922
Conguring SupportAssist Activity..............................................................................................................................924
Conguring SupportAssist Company..........................................................................................................................925
Conguring SupportAssist Person.............................................................................................................................. 926
Conguring SupportAssist Server...............................................................................................................................926
Viewing SupportAssist Conguration..........................................................................................................................927
55 System Time and Date.............................................................................................................................929
Network Time Protocol.................................................................................................................................................929
Protocol Overview...................................................................................................................................................930
Congure the Network Time Protocol..................................................................................................................930
Enabling NTP............................................................................................................................................................ 931
Conguring NTP Broadcasts.................................................................................................................................. 931
Disabling NTP on an Interface................................................................................................................................932
Conguring a Source IP Address for NTP Packets............................................................................................. 932
Conguring NTP Authentication............................................................................................................................932
Dell Networking OS Time and Date.............................................................................................................................935
Conguration Task List ...........................................................................................................................................935
Setting the Time and Date for the Switch Software Clock............................................................................... 935
Setting the Timezone..............................................................................................................................................935
Set Daylight Saving Time........................................................................................................................................936
Setting Daylight Saving Time Once.......................................................................................................................936
Setting Recurring Daylight Saving Time................................................................................................................937
56 Tunneling................................................................................................................................................. 939
Conguring a Tunnel......................................................................................................................................................939
Conguring Tunnel Keepalive Settings........................................................................................................................940
Conguring a Tunnel Interface.....................................................................................................................................940
Conguring Tunnel Allow-Remote Decapsulation.......................................................................................................941
Conguring the Tunnel Source Anylocal......................................................................................................................941
57 Uplink Failure Detection (UFD)................................................................................................................ 943
Feature Description....................................................................................................................................................... 943
How Uplink Failure Detection Works........................................................................................................................... 944
UFD and NIC Teaming...................................................................................................................................................945
Important Points to Remember................................................................................................................................... 945
Conguring Uplink Failure Detection...........................................................................................................................946
Clearing a UFD-Disabled Interface...............................................................................................................................947
Displaying Uplink Failure Detection..............................................................................................................................948
Contents
29