Setup Guide

52 Spanning Tree Protocol (STP)................................................................................................................. 963
Protocol Overview.........................................................................................................................................................963
Congure Spanning Tree.............................................................................................................................................. 964
Related Conguration Tasks...................................................................................................................................964
Important Points to Remember................................................................................................................................... 964
Conguring Interfaces for Layer 2 Mode................................................................................................................... 965
Enabling Spanning Tree Protocol Globally.................................................................................................................. 966
Adding an Interface to the Spanning Tree Group...................................................................................................... 968
Modifying Global Parameters.......................................................................................................................................968
Modifying Interface STP Parameters..........................................................................................................................969
Enabling PortFast.......................................................................................................................................................... 969
Prevent Network Disruptions with BPDU Guard................................................................................................. 970
Selecting STP Root........................................................................................................................................................972
STP Root Guard.............................................................................................................................................................972
Root Guard Scenario............................................................................................................................................... 972
Conguring Root Guard.......................................................................................................................................... 973
Enabling SNMP Traps for Root Elections and Topology Changes........................................................................... 974
Conguring Spanning Trees as Hitless........................................................................................................................ 974
STP Loop Guard.............................................................................................................................................................974
Conguring Loop Guard.......................................................................................................................................... 976
Displaying STP Guard Conguration............................................................................................................................976
53 SupportAssist.......................................................................................................................................... 978
Conguring SupportAssist Using a Conguration Wizard........................................................................................ 979
Conguring SupportAssist Manually........................................................................................................................... 979
Conguring SupportAssist Activity.............................................................................................................................. 981
Conguring SupportAssist Company..........................................................................................................................982
Conguring SupportAssist Person.............................................................................................................................. 983
Conguring SupportAssist Server...............................................................................................................................983
Viewing SupportAssist Conguration..........................................................................................................................984
54 System Time and Date.............................................................................................................................986
Network Time Protocol.................................................................................................................................................986
Protocol Overview................................................................................................................................................... 987
Congure the Network Time Protocol.................................................................................................................. 987
Enabling NTP........................................................................................................................................................... 988
Conguring NTP Broadcasts................................................................................................................................. 988
Disabling NTP on an Interface............................................................................................................................... 989
Conguring a Source IP Address for NTP Packets.............................................................................................989
Conguring NTP Authentication........................................................................................................................... 989
Conguring NTP control key password................................................................................................................ 992
Conguring a Custom-dened Period for NTP time Synchronization..............................................................992
Dell EMC Networking OS Time and Date...................................................................................................................992
Conguration Task List ...........................................................................................................................................992
Setting the Time and Date for the Switch Software Clock................................................................................992
30
Contents