Administrator Guide
Enabling Spanning Tree Protocol Globally...................................................................................................................... 901
Adding an Interface to the Spanning Tree Group.........................................................................................................903
Modifying Global Parameters.......................................................................................................................................... 903
Modifying Interface STP Parameters.............................................................................................................................904
Enabling PortFast..............................................................................................................................................................904
Prevent Network Disruptions with BPDU Guard..........................................................................................................905
Selecting STP Root...........................................................................................................................................................906
STP Root Guard................................................................................................................................................................ 907
Root Guard Scenario...................................................................................................................................................907
Configuring Root Guard............................................................................................................................................. 908
Enabling SNMP Traps for Root Elections and Topology Changes.............................................................................908
STP Loop Guard................................................................................................................................................................908
Configuring Loop Guard............................................................................................................................................. 909
Displaying STP Guard Configuration............................................................................................................................... 910
56 SupportAssist......................................................................................................................... 911
Configuring SupportAssist Using a Configuration Wizard............................................................................................912
Configuring SupportAssist Manually................................................................................................................................912
Configuring SupportAssist Activity..................................................................................................................................914
Configuring SupportAssist Company.............................................................................................................................. 915
Configuring SupportAssist Person...................................................................................................................................915
Configuring SupportAssist Server................................................................................................................................... 916
Viewing SupportAssist Configuration..............................................................................................................................917
57 System Time and Date............................................................................................................. 919
Network Time Protocol.....................................................................................................................................................919
Protocol Overview...................................................................................................................................................... 920
Configure the Network Time Protocol..................................................................................................................... 920
Enabling NTP............................................................................................................................................................... 920
Configuring NTP Broadcasts......................................................................................................................................921
Disabling NTP on an Interface....................................................................................................................................921
Configuring a Source IP Address for NTP Packets................................................................................................. 921
Configuring NTP Authentication............................................................................................................................... 922
Configuring NTP control key password....................................................................................................................924
Configuring the NTP Step-Threshold.......................................................................................................................924
Time and Date....................................................................................................................................................................924
Configuration Task List ..............................................................................................................................................924
Setting the Time and Date for the Switch Software Clock...................................................................................924
Setting the Timezone................................................................................................................................................. 925
Set Daylight Saving Time........................................................................................................................................... 925
Setting Daylight Saving Time Once.......................................................................................................................... 925
Setting Recurring Daylight Saving Time...................................................................................................................926
Configuring a Custom-defined Period for NTP time Synchronization................................................................. 927
58 Tunneling .............................................................................................................................. 928
Configuring a Tunnel.........................................................................................................................................................928
Configuring Tunnel Keepalive Settings...........................................................................................................................929
Configuring a Tunnel Interface........................................................................................................................................929
Configuring Tunnel allow-remote Decapsulation.......................................................................................................... 929
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