Service Manual

Important Points to Remember..........................................................................................................................883
Configuring Interfaces for Layer 2 Mode..........................................................................................................884
Enabling Spanning Tree Protocol Globally.......................................................................................................885
Adding an Interface to the Spanning Tree Group...........................................................................................887
Modifying Global Parameters.............................................................................................................................. 887
Modifying Interface STP Parameters................................................................................................................. 888
Enabling PortFast................................................................................................................................................... 889
Prevent Network Disruptions with BPDU Guard.......................................................................................890
Selecting STP Root................................................................................................................................................ 892
STP Root Guard......................................................................................................................................................892
Root Guard Scenario.......................................................................................................................................892
Configuring Root Guard................................................................................................................................. 893
Enabling SNMP Traps for Root Elections and Topology Changes..............................................................894
Configuring Spanning Trees as Hitless..............................................................................................................894
STP Loop Guard..................................................................................................................................................... 894
Configuring Loop Guard.................................................................................................................................895
Displaying STP Guard Configuration................................................................................................................. 896
55 SupportAssist..................................................................................................................................................... 897
Configuring SupportAssist Using a Configuration Wizard............................................................................ 898
Configuring SupportAssist Manually..................................................................................................................898
Configuring SupportAssist Activity.....................................................................................................................900
Configuring SupportAssist Company.................................................................................................................901
Configuring SupportAssist Person......................................................................................................................901
Configuring SupportAssist Server.......................................................................................................................902
Viewing SupportAssist Configuration................................................................................................................ 903
56 System Time and Date..................................................................................................................................... 905
Network Time Protocol........................................................................................................................................905
Protocol Overview...........................................................................................................................................906
Configure the Network Time Protocol........................................................................................................907
Enabling NTP.....................................................................................................................................................907
Configuring NTP Broadcasts.........................................................................................................................908
Disabling NTP on an Interface...................................................................................................................... 908
Configuring a Source IP Address for NTP Packets................................................................................... 908
Configuring NTP Authentication.................................................................................................................. 909
Configuring a Custom-defined Period for NTP time Synchronization.................................................911
Dell Networking OS Time and Date................................................................................................................... 912
Configuration Task List ...................................................................................................................................912
Setting the Time and Date for the Switch Software Clock......................................................................912
Setting the Timezone.......................................................................................................................................912
Set Daylight Saving Time.................................................................................................................................913
Setting Daylight Saving Time Once.............................................................................................................. 913
Setting Recurring Daylight Saving Time.......................................................................................................913
57 Tunneling............................................................................................................................................................916
Configuring a Tunnel.............................................................................................................................................916
9.10(0.0)
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