Administrator Guide

Configuring a Custom-defined Period for NTP time Synchronization..................................................................914
Dell EMC Networking OS Time and Date.......................................................................................................................915
Configuration Task List .............................................................................................................................................. 915
Setting the Time and Date for the Switch Software Clock................................................................................... 915
Setting the Timezone.................................................................................................................................................. 915
Set Daylight Saving Time............................................................................................................................................ 916
Setting Daylight Saving Time Once........................................................................................................................... 916
Setting Recurring Daylight Saving Time....................................................................................................................916
59 Tunneling............................................................................................................................... 918
Configuring a Tunnel..........................................................................................................................................................918
Configuring Tunnel Keepalive Settings........................................................................................................................... 919
Configuring a Tunnel Interface.........................................................................................................................................919
Configuring Tunnel Allow-Remote Decapsulation.........................................................................................................920
Configuring the Tunnel Source Anylocal........................................................................................................................920
60 Uplink Failure Detection (UFD).................................................................................................921
Feature Description........................................................................................................................................................... 921
How Uplink Failure Detection Works.............................................................................................................................. 922
UFD and NIC Teaming......................................................................................................................................................923
Important Points to Remember.......................................................................................................................................923
Configuring Uplink Failure Detection.............................................................................................................................. 924
Clearing a UFD-Disabled Interface..................................................................................................................................925
Displaying Uplink Failure Detection................................................................................................................................. 926
Sample Configuration: Uplink Failure Detection............................................................................................................ 927
61 Upgrade Procedures................................................................................................................929
62 Virtual LANs (VLANs)..............................................................................................................930
Default VLAN.....................................................................................................................................................................930
Port-Based VLANs............................................................................................................................................................ 931
VLANs and Port Tagging.................................................................................................................................................. 931
Configuration Task List.....................................................................................................................................................932
Creating a Port-Based VLAN.....................................................................................................................................932
Assigning Interfaces to a VLAN.................................................................................................................................932
Moving Untagged Interfaces..................................................................................................................................... 933
Assigning an IP Address to a VLAN.......................................................................................................................... 934
Configuring Native VLANs...............................................................................................................................................935
Enabling Null VLAN as the Default VLAN...................................................................................................................... 935
63 Virtual Link Trunking (VLT)..................................................................................................... 936
Overview............................................................................................................................................................................ 936
VLT Terminology......................................................................................................................................................... 938
Layer-2 Traffic in VLT Domains.................................................................................................................................938
Interspersed VLANs.................................................................................................................................................... 939
VLT on Core Switches................................................................................................................................................940
Enhanced VLT............................................................................................................................................................. 940
Configure Virtual Link Trunking........................................................................................................................................941
Important Points to Remember..................................................................................................................................941
28
Contents