Concept Guide

Congure Spanning Tree.............................................................................................................................................. 936
Related Conguration Tasks...................................................................................................................................936
Important Points to Remember................................................................................................................................... 936
Conguring Interfaces for Layer 2 Mode....................................................................................................................937
Enabling Spanning Tree Protocol Globally...................................................................................................................938
Adding an Interface to the Spanning Tree Group...................................................................................................... 940
Modifying Global Parameters.......................................................................................................................................940
Modifying Interface STP Parameters...........................................................................................................................941
Enabling PortFast........................................................................................................................................................... 941
Prevent Network Disruptions with BPDU Guard.................................................................................................942
Selecting STP Root....................................................................................................................................................... 943
STP Root Guard.............................................................................................................................................................944
Root Guard Scenario............................................................................................................................................... 944
Conguring Root Guard..........................................................................................................................................945
Enabling SNMP Traps for Root Elections and Topology Changes...........................................................................946
Conguring Spanning Trees as Hitless........................................................................................................................946
STP Loop Guard............................................................................................................................................................ 946
Conguring Loop Guard..........................................................................................................................................947
Displaying STP Guard Conguration........................................................................................................................... 948
55 SupportAssist..........................................................................................................................................949
Conguring SupportAssist Using a Conguration Wizard........................................................................................950
Conguring SupportAssist Manually...........................................................................................................................950
Conguring SupportAssist Activity............................................................................................................................. 952
Conguring SupportAssist Company..........................................................................................................................953
Conguring SupportAssist Person.............................................................................................................................. 954
Conguring SupportAssist Server...............................................................................................................................954
Viewing SupportAssist Conguration......................................................................................................................... 955
56 System Time and Date.............................................................................................................................957
Network Time Protocol.................................................................................................................................................957
Protocol Overview...................................................................................................................................................958
Congure the Network Time Protocol..................................................................................................................958
Enabling NTP........................................................................................................................................................... 959
Conguring NTP Broadcasts................................................................................................................................. 959
Disabling NTP on an Interface............................................................................................................................... 960
Conguring a Source IP Address for NTP Packets.............................................................................................960
Conguring NTP Authentication........................................................................................................................... 960
Conguring NTP control key password................................................................................................................ 963
Dell EMC Networking OS Time and Date...................................................................................................................963
Conguration Task List ...........................................................................................................................................963
Setting the Time and Date for the Switch Software Clock............................................................................... 963
Setting the Timezone..............................................................................................................................................964
Set Daylight Saving Time........................................................................................................................................964
Setting Daylight Saving Time Once.......................................................................................................................964
Setting Recurring Daylight Saving Time............................................................................................................... 965
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