Administrator Guide

Enabling SNMP Traps for Root Elections and Topology Changes.......................................................................... 909
Conguring Spanning Trees as Hitless........................................................................................................................909
STP Loop Guard............................................................................................................................................................ 909
Conguring Loop Guard........................................................................................................................................... 911
Displaying STP Guard Conguration.............................................................................................................................911
54 SupportAssist...........................................................................................................................................913
Conguring SupportAssist Using a Conguration Wizard.........................................................................................914
Conguring SupportAssist Manually............................................................................................................................914
Conguring SupportAssist Activity.............................................................................................................................. 916
Conguring SupportAssist Company...........................................................................................................................917
Conguring SupportAssist Person............................................................................................................................... 918
Conguring SupportAssist Server................................................................................................................................918
Viewing SupportAssist Conguration.......................................................................................................................... 919
55 System Time and Date............................................................................................................................. 921
Network Time Protocol..................................................................................................................................................921
Protocol Overview...................................................................................................................................................922
Congure the Network Time Protocol..................................................................................................................922
Enabling NTP............................................................................................................................................................923
Conguring NTP Broadcasts..................................................................................................................................923
Disabling NTP on an Interface................................................................................................................................924
Conguring a Source IP Address for NTP Packets............................................................................................. 924
Conguring NTP Authentication............................................................................................................................924
Dell Networking OS Time and Date.............................................................................................................................927
Conguration Task List ...........................................................................................................................................927
Setting the Time and Date for the Switch Software Clock................................................................................927
Setting the Timezone.............................................................................................................................................. 927
Set Daylight Saving Time........................................................................................................................................928
Setting Daylight Saving Time Once.......................................................................................................................928
Setting Recurring Daylight Saving Time............................................................................................................... 929
56 Tunneling..................................................................................................................................................931
Conguring a Tunnel...................................................................................................................................................... 931
Conguring Tunnel Keepalive Settings........................................................................................................................932
Conguring a Tunnel Interface..................................................................................................................................... 932
Conguring Tunnel Allow-Remote Decapsulation......................................................................................................933
Conguring the Tunnel Source Anylocal..................................................................................................................... 933
57 Uplink Failure Detection (UFD)................................................................................................................ 935
Feature Description....................................................................................................................................................... 935
How Uplink Failure Detection Works........................................................................................................................... 936
UFD and NIC Teaming................................................................................................................................................... 937
Important Points to Remember....................................................................................................................................937
Conguring Uplink Failure Detection...........................................................................................................................938
Clearing a UFD-Disabled Interface.............................................................................................................................. 939
Contents
29