Users Guide

Adding an Interface to the Spanning Tree Group....................................................................................................... 818
Modifying Global Parameters........................................................................................................................................818
Modifying Interface STP Parameters...........................................................................................................................819
Enabling PortFast.......................................................................................................................................................... 820
Prevent Network Disruptions with BPDU Guard.................................................................................................820
Selecting STP Root....................................................................................................................................................... 822
STP Root Guard.............................................................................................................................................................822
Root Guard Scenario............................................................................................................................................... 823
Conguring Root Guard.......................................................................................................................................... 823
Enabling SNMP Traps for Root Elections and Topology Changes...........................................................................824
Conguring Spanning Trees as Hitless........................................................................................................................ 824
STP Loop Guard.............................................................................................................................................................825
Conguring Loop Guard..........................................................................................................................................826
Displaying STP Guard Conguration............................................................................................................................827
50 SupportAssist.......................................................................................................................................... 828
Conguring SupportAssist Using a Conguration Wizard........................................................................................829
Conguring SupportAssist Manually........................................................................................................................... 829
Conguring SupportAssist Activity.............................................................................................................................. 831
Conguring SupportAssist Company..........................................................................................................................832
Conguring SupportAssist Person.............................................................................................................................. 833
Conguring SupportAssist Server...............................................................................................................................833
Viewing SupportAssist Conguration..........................................................................................................................834
51 System Time and Date..............................................................................................................................836
Network Time Protocol.................................................................................................................................................836
Protocol Overview................................................................................................................................................... 837
Congure the Network Time Protocol.................................................................................................................. 837
Enabling NTP............................................................................................................................................................838
Conguring NTP Broadcasts..................................................................................................................................838
Disabling NTP on an Interface................................................................................................................................839
Conguring a Source IP Address for NTP Packets.............................................................................................839
Conguring NTP Authentication............................................................................................................................839
Conguring a Custom-dened Period for NTP time Synchronization..............................................................842
Dell Networking OS Time and Date.............................................................................................................................842
Conguration Task List ...........................................................................................................................................842
Setting the Time and Date for the Switch Software Clock................................................................................842
Setting the Timezone..............................................................................................................................................843
Set Daylight Saving Time........................................................................................................................................843
Setting Daylight Saving Time Once.......................................................................................................................843
Setting Recurring Daylight Saving Time............................................................................................................... 844
52 Uplink Failure Detection (UFD)................................................................................................................ 846
Feature Description....................................................................................................................................................... 846
How Uplink Failure Detection Works........................................................................................................................... 847
UFD and NIC Teaming...................................................................................................................................................848
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