Administrator Guide

52 Spanning Tree Protocol (STP)................................................................................................. 838
Protocol Overview............................................................................................................................................................ 838
Configure Spanning Tree................................................................................................................................................. 838
Important Points to Remember.......................................................................................................................................839
Configuring Interfaces for Layer 2 Mode.......................................................................................................................839
Enabling Spanning Tree Protocol Globally..................................................................................................................... 840
Adding an Interface to the Spanning Tree Group.........................................................................................................842
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
53 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
54 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 NTP control key password....................................................................................................................864
Configuring the NTP Step-Threshold.......................................................................................................................864
Configuring a Custom-defined Period for NTP time Synchronization................................................................. 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
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