Administrator Guide

Protocol Overview............................................................................................................................................................ 792
Configure Spanning Tree..................................................................................................................................................792
Important Points to Remember.......................................................................................................................................793
Configuring Interfaces for Layer 2 Mode.......................................................................................................................793
Enabling Spanning Tree Protocol Globally......................................................................................................................794
Adding an Interface to the Spanning Tree Group......................................................................................................... 796
Modifying Global Parameters...........................................................................................................................................796
Modifying Interface STP Parameters............................................................................................................................. 797
Enabling PortFast.............................................................................................................................................................. 797
Prevent Network Disruptions with BPDU Guard.................................................................................................... 798
Selecting STP Root...........................................................................................................................................................800
STP Root Guard................................................................................................................................................................800
Root Guard Scenario.................................................................................................................................................. 800
Configuring Root Guard.............................................................................................................................................. 801
Enabling SNMP Traps for Root Elections and Topology Changes.............................................................................802
Configuring Spanning Trees as Hitless...........................................................................................................................802
STP Loop Guard................................................................................................................................................................802
Configuring Loop Guard............................................................................................................................................. 803
Displaying STP Guard Configuration.............................................................................................................................. 804
52 SupportAssist........................................................................................................................ 805
Configuring SupportAssist Using a Configuration Wizard........................................................................................... 805
Configuring SupportAssist Manually...............................................................................................................................806
Configuring SupportAssist Activity................................................................................................................................. 807
Configuring SupportAssist Company............................................................................................................................. 809
Configuring SupportAssist Person..................................................................................................................................809
Configuring SupportAssist Server................................................................................................................................... 810
Viewing SupportAssist Configuration...............................................................................................................................811
53 System Time and Date............................................................................................................. 813
Network Time Protocol.....................................................................................................................................................813
Protocol Overview....................................................................................................................................................... 814
Configure the Network Time Protocol......................................................................................................................814
Enabling NTP................................................................................................................................................................ 814
Configuring NTP Broadcasts......................................................................................................................................815
Disabling NTP on an Interface....................................................................................................................................815
Configuring a Source IP Address for NTP Packets.................................................................................................815
Configuring NTP Authentication................................................................................................................................816
Configuring a Custom-defined Period for NTP time Synchronization..................................................................818
Configuring NTP control key password.................................................................................................................... 818
Configuring the NTP Step-Threshold....................................................................................................................... 818
Dell EMC Networking OS Time and Date.......................................................................................................................819
Configuration Task List .............................................................................................................................................. 819
Setting the Time and Date for the Switch Software Clock................................................................................... 819
Setting the Timezone.................................................................................................................................................. 819
Set Daylight Saving Time........................................................................................................................................... 820
Setting Daylight Saving Time Once.......................................................................................................................... 820
Setting Recurring Daylight Saving Time...................................................................................................................820
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