Administrator Guide

Disabling NTP on an Interface................................................................................................................................947
Configuring a Source IP Address for NTP Packets.............................................................................................947
Configuring NTP Authentication............................................................................................................................947
Configuring a Custom-defined Period for NTP time Synchronization............................................................. 950
Dell Networking OS Time and Date............................................................................................................................ 950
Configuration Task List ..........................................................................................................................................950
Setting the Time and Date for the Switch Software Clock...............................................................................950
Setting the Timezone.............................................................................................................................................. 951
Set Daylight Saving Time........................................................................................................................................ 951
Setting Daylight Saving Time Once....................................................................................................................... 951
Setting Recurring Daylight Saving Time...............................................................................................................952
57 Tunneling.................................................................................................................................................954
Configuring a Tunnel.....................................................................................................................................................954
Configuring Tunnel Keepalive Settings.......................................................................................................................955
Configuring a Tunnel Interface.................................................................................................................................... 955
Configuring Tunnel Allow-Remote Decapsulation.....................................................................................................956
Configuring the Tunnel Source Anylocal.................................................................................................................... 956
58 Uplink Failure Detection (UFD)................................................................................................................958
Feature Description.......................................................................................................................................................958
How Uplink Failure Detection Works.......................................................................................................................... 959
UFD and NIC Teaming..................................................................................................................................................960
Important Points to Remember...................................................................................................................................960
Configuring Uplink Failure Detection........................................................................................................................... 961
Clearing a UFD-Disabled Interface..............................................................................................................................962
Displaying Uplink Failure Detection............................................................................................................................. 963
Sample Configuration: Uplink Failure Detection........................................................................................................ 965
59 Upgrade Procedures................................................................................................................................967
Get Help with Upgrades............................................................................................................................................... 967
60 Virtual LANs (VLANs)..............................................................................................................................968
Default VLAN................................................................................................................................................................. 969
Port-Based VLANs........................................................................................................................................................969
VLANs and Port Tagging..............................................................................................................................................970
Configuration Task List.................................................................................................................................................970
Creating a Port-Based VLAN.................................................................................................................................970
Assigning Interfaces to a VLAN..............................................................................................................................971
Moving Untagged Interfaces................................................................................................................................. 972
Assigning an IP Address to a VLAN.......................................................................................................................973
Configuring Native VLANs............................................................................................................................................973
Enabling Null VLAN as the Default VLAN...................................................................................................................974
61 Virtual Link Trunking (VLT)...................................................................................................................... 975
Overview.........................................................................................................................................................................975
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