Administrator Guide

Enabling PortFast..............................................................................................................................................................884
Prevent Network Disruptions with BPDU Guard....................................................................................................885
Selecting STP Root...........................................................................................................................................................887
STP Root Guard................................................................................................................................................................ 887
Root Guard Scenario...................................................................................................................................................887
Configuring Root Guard..............................................................................................................................................888
Enabling SNMP Traps for Root Elections and Topology Changes.............................................................................889
Configuring Spanning Trees as Hitless...........................................................................................................................889
STP Loop Guard................................................................................................................................................................889
Configuring Loop Guard............................................................................................................................................. 890
Displaying STP Guard Configuration............................................................................................................................... 891
56 SupportAssist........................................................................................................................ 892
Configuring SupportAssist Using a Configuration Wizard........................................................................................... 892
Configuring SupportAssist Manually...............................................................................................................................893
Configuring SupportAssist Activity.................................................................................................................................894
Configuring SupportAssist Company............................................................................................................................. 896
Configuring SupportAssist Person..................................................................................................................................896
Configuring SupportAssist Server...................................................................................................................................897
Viewing SupportAssist Configuration.............................................................................................................................898
57 System Time and Date............................................................................................................ 900
Network Time Protocol....................................................................................................................................................900
Protocol Overview....................................................................................................................................................... 901
Configure the Network Time Protocol......................................................................................................................901
Enabling NTP................................................................................................................................................................901
Configuring NTP Broadcasts.....................................................................................................................................902
Disabling NTP on an Interface................................................................................................................................... 902
Configuring a Source IP Address for NTP Packets................................................................................................ 902
Configuring NTP Authentication............................................................................................................................... 903
Configuring NTP control key password................................................................................................................... 905
Configuring the NTP Step-Threshold...................................................................................................................... 905
Dell EMC Networking OS Time and Date...................................................................................................................... 905
Configuration Task List ............................................................................................................................................. 905
Setting the Time and Date for the Switch Software Clock...................................................................................905
Setting the Timezone................................................................................................................................................. 906
Set Daylight Saving Time........................................................................................................................................... 906
Setting Daylight Saving Time Once.......................................................................................................................... 906
Setting Recurring Daylight Saving Time...................................................................................................................907
58 Tunneling...............................................................................................................................909
Configuring a Tunnel.........................................................................................................................................................909
Configuring Tunnel Keepalive Settings........................................................................................................................... 910
Configuring a Tunnel Interface.........................................................................................................................................910
Configuring Tunnel Allow-Remote Decapsulation.......................................................................................................... 911
Configuring the Tunnel Source Anylocal..........................................................................................................................911
59 Uplink Failure Detection (UFD).................................................................................................912
Feature Description........................................................................................................................................................... 912
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