Configuration manual

Modifying Interface STP Parameters................................................................................................872
Enabling PortFast.............................................................................................................................. 873
Prevent Network Disruptions with BPDU Guard....................................................................... 873
Global BPDU Filtering....................................................................................................................... 876
Interface BPDU Filtering............................................................................................................. 876
Selecting STP Root............................................................................................................................877
STP Root Guard................................................................................................................................ 878
Root Guard Scenario.................................................................................................................. 878
Configuring Root Guard............................................................................................................. 879
SNMP Traps for Root Elections and Topology Changes................................................................880
Displaying STP Guard Configuration...............................................................................................880
52 System Time and Date...................................................................................881
Network Time Protocol.................................................................................................................... 881
Protocol Overview......................................................................................................................882
Configure the Network Time Protocol......................................................................................883
Enabling NTP...............................................................................................................................883
Setting the Hardware Clock with the Time Derived from NTP.................................................883
Configuring NTP Broadcasts......................................................................................................884
Disabling NTP on an Interface................................................................................................... 884
Configuring a Source IP Address for NTP Packets....................................................................884
Configuring NTP Authentication................................................................................................885
Dell Networking OS Time and Date.................................................................................................887
Configuration Task List .............................................................................................................. 887
Set Daylight Saving Time............................................................................................................889
53 Tunneling ........................................................................................................892
Configuring a Tunnel........................................................................................................................892
Configuring Tunnel keepalive.......................................................................................................... 893
Configuring the ip and ipv6 unnumbered.......................................................................................894
Configuring the Tunnel allow-remote............................................................................................ 894
Configuring the tunnel source anylocal..........................................................................................895
54 Uplink Failure Detection (UFD)................................................................... 896
Feature Description.......................................................................................................................... 896
How Uplink Failure Detection Works...............................................................................................897
UFD and NIC Teaming..................................................................................................................... 898
Important Points to Remember.......................................................................................................898
Configuring Uplink Failure Detection.............................................................................................. 899
Clearing a UFD-Disabled Interface.................................................................................................. 901
Displaying Uplink Failure Detection.................................................................................................902
Sample Configuration: Uplink Failure Detection............................................................................ 904