Users Guide

STP Root Guard................................................................................................................................................................ 779
Root Guard Scenario...................................................................................................................................................779
Configuring Root Guard..............................................................................................................................................780
Enabling SNMP Traps for Root Elections and Topology Changes.............................................................................. 781
Configuring Spanning Trees as Hitless............................................................................................................................781
STP Loop Guard.................................................................................................................................................................781
Configuring Loop Guard..............................................................................................................................................782
Displaying STP Guard Configuration...............................................................................................................................783
Chapter 54: SupportAssist........................................................................................................... 784
Configuring SupportAssist Using a Configuration Wizard........................................................................................... 785
Configuring SupportAssist Manually...............................................................................................................................785
Configuring SupportAssist Activity................................................................................................................................. 786
Configuring SupportAssist Company..............................................................................................................................788
Configuring SupportAssist Person.................................................................................................................................. 788
Configuring SupportAssist Server...................................................................................................................................789
Viewing SupportAssist Configuration............................................................................................................................. 790
Chapter 55: System Time and Date...............................................................................................792
Network Time Protocol.................................................................................................................................................... 792
Protocol Overview.......................................................................................................................................................793
Configure the Network Time Protocol..................................................................................................................... 794
Enabling NTP................................................................................................................................................................794
Configuring NTP Broadcasts..................................................................................................................................... 795
Disabling NTP on an Interface................................................................................................................................... 795
Configuring a Source IP Address for NTP Packets................................................................................................ 795
Configuring NTP Authentication............................................................................................................................... 796
Dell Networking OS Time and Date................................................................................................................................ 798
Configuration Task List ..............................................................................................................................................798
Setting the Time and Date for the Switch Software Clock...................................................................................798
Setting the Timezone..................................................................................................................................................798
Set Daylight Saving Time............................................................................................................................................799
Setting Daylight Saving Time Once...........................................................................................................................799
Setting Recurring Daylight Saving Time...................................................................................................................799
Chapter 56: Tunneling..................................................................................................................801
Configuring a Tunnel..........................................................................................................................................................801
Configuring Tunnel Keepalive Settings...........................................................................................................................802
Configuring a Tunnel Interface........................................................................................................................................802
Configuring Tunnel Allow-Remote Decapsulation.........................................................................................................803
Configuring the Tunnel Source Anylocal........................................................................................................................ 803
Chapter 57: Uplink Failure Detection (UFD)...................................................................................804
Feature Description...........................................................................................................................................................804
How Uplink Failure Detection Works..............................................................................................................................805
UFD and NIC Teaming......................................................................................................................................................806
Important Points to Remember.......................................................................................................................................806
Configuring Uplink Failure Detection.............................................................................................................................. 807
Clearing a UFD-Disabled Interface..................................................................................................................................808
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