Reference Guide

Configuring Root Guard.............................................................................................................930
Enabling SNMP Traps for Root Elections and Topology Changes..................................................931
Configuring Spanning Trees as Hitless.............................................................................................931
STP Loop Guard................................................................................................................................932
Configuring Loop Guard.............................................................................................................933
Displaying STP Guard Configuration............................................................................................... 934
54 System Time and Date...................................................................................... 935
Network Time Protocol....................................................................................................................935
Protocol Overview......................................................................................................................936
Configure the Network Time Protocol...................................................................................... 937
Enabling NTP...............................................................................................................................937
Setting the Hardware Clock with the Time Derived from NTP.................................................937
Configuring NTP Broadcasts......................................................................................................938
Disabling NTP on an Interface....................................................................................................938
Configuring a Source IP Address for NTP Packets....................................................................938
Configuring NTP Authentication................................................................................................939
Dell Networking OS Time and Date.................................................................................................942
Configuration Task List ..............................................................................................................942
Setting the Time and Date for the Switch Hardware Clock......................................................942
Setting the Time and Date for the Switch Software Clock....................................................... 942
Setting the Timezone................................................................................................................. 943
Set Daylight Saving Time............................................................................................................ 943
Setting Daylight Saving Time Once............................................................................................943
Setting Recurring Daylight Saving Time.....................................................................................944
55 Tunneling ............................................................................................................946
Configuring a Tunnel........................................................................................................................946
Configuring Tunnel Keepalive Settings............................................................................................947
Configuring a Tunnel Interface........................................................................................................948
Configuring Tunnel allow-remote Decapsulation..........................................................................948
Configuring Tunnel source anylocal Decapsulation.......................................................................949
56 Uplink Failure Detection (UFD)...................................................................... 950
Feature Description.......................................................................................................................... 950
How Uplink Failure Detection Works............................................................................................... 951
UFD and NIC Teaming......................................................................................................................952
Important Points to Remember....................................................................................................... 952
Configuring Uplink Failure Detection.............................................................................................. 954
Clearing a UFD-Disabled Interface.................................................................................................. 955
Displaying Uplink Failure Detection................................................................................................. 957
Sample Configuration: Uplink Failure Detection.............................................................................959