Administrator Guide

Protocol Overview.......................................................................................................................................................... 837
Configure Spanning Tree...............................................................................................................................................837
Important Points to Remember...................................................................................................................................838
Configuring Interfaces for Layer 2 Mode..................................................................................................................839
Enabling Spanning Tree Protocol Globally................................................................................................................ 840
Adding an Interface to the Spanning Tree Group....................................................................................................841
Modifying Global Parameters.......................................................................................................................................842
Modifying Interface STP Parameters.........................................................................................................................843
Enabling PortFast............................................................................................................................................................843
Prevent Network Disruptions with BPDU Guard...............................................................................................844
Selecting STP Root........................................................................................................................................................ 846
STP Root Guard.............................................................................................................................................................. 846
Root Guard Scenario................................................................................................................................................ 846
Configuring Root Guard...........................................................................................................................................847
Enabling SNMP Traps for Root Elections and Topology Changes......................................................................848
Configuring Spanning Trees as Hitless...................................................................................................................... 848
STP Loop Guard..............................................................................................................................................................848
Configuring Loop Guard.......................................................................................................................................... 849
Displaying STP Guard Configuration..........................................................................................................................850
Chapter 52: SupportAssist.........................................................................................................851
Configuring SupportAssist Using a Configuration Wizard.....................................................................................851
Configuring SupportAssist Manually.......................................................................................................................... 852
Configuring SupportAssist Activity............................................................................................................................ 853
Configuring SupportAssist Company......................................................................................................................... 855
Configuring SupportAssist Person..............................................................................................................................855
Configuring SupportAssist Server.............................................................................................................................. 856
Viewing SupportAssist Configuration.........................................................................................................................857
Chapter 53: System Time and Date............................................................................................859
Network Time Protocol................................................................................................................................................. 859
Protocol Overview....................................................................................................................................................860
Configure the Network Time Protocol................................................................................................................ 860
Enabling NTP..............................................................................................................................................................860
Configuring NTP Broadcasts.................................................................................................................................. 861
Disabling NTP on an Interface................................................................................................................................ 861
Configuring a Source IP Address for NTP Packets...........................................................................................861
Configuring NTP Authentication........................................................................................................................... 862
Configuring a Custom-defined Period for NTP time Synchronization.........................................................864
Configuring NTP control key password...............................................................................................................864
Configuring the NTP Step-Threshold.................................................................................................................. 864
Dell EMC Networking OS Time and Date................................................................................................................. 865
Configuration Task List .......................................................................................................................................... 865
Setting the Time and Date for the Switch Software Clock............................................................................865
Setting the Timezone...............................................................................................................................................865
Set Daylight Saving Time........................................................................................................................................ 866
Setting Daylight Saving Time Once......................................................................................................................866
Setting Recurring Daylight Saving Time..............................................................................................................866
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