Administrator Guide

56 System Time and Date.............................................................................................................................949
Network Time Protocol.................................................................................................................................................949
Protocol Overview...................................................................................................................................................950
Congure the Network Time Protocol..................................................................................................................950
Enabling NTP............................................................................................................................................................ 951
Conguring NTP Broadcasts.................................................................................................................................. 951
Disabling NTP on an Interface................................................................................................................................952
Conguring a Source IP Address for NTP Packets.............................................................................................952
Conguring NTP Authentication........................................................................................................................... 952
Conguring a Custom-dened Period for NTP time Synchronization..............................................................955
Dell Networking OS Time and Date.............................................................................................................................955
Conguration Task List .......................................................................................................................................... 955
Setting the Time and Date for the Switch Software Clock............................................................................... 955
Setting the Timezone..............................................................................................................................................956
Set Daylight Saving Time........................................................................................................................................956
Setting Daylight Saving Time Once.......................................................................................................................956
Setting Recurring Daylight Saving Time............................................................................................................... 957
57 Tunneling................................................................................................................................................. 959
Conguring a Tunnel..................................................................................................................................................... 959
Conguring Tunnel Keepalive Settings....................................................................................................................... 960
Conguring a Tunnel Interface.....................................................................................................................................960
Conguring Tunnel Allow-Remote Decapsulation...................................................................................................... 961
Conguring the Tunnel Source Anylocal......................................................................................................................961
58 Uplink Failure Detection (UFD)................................................................................................................ 963
Feature Description....................................................................................................................................................... 963
How Uplink Failure Detection Works...........................................................................................................................964
UFD and NIC Teaming...................................................................................................................................................965
Important Points to Remember................................................................................................................................... 965
Conguring Uplink Failure Detection...........................................................................................................................966
Clearing a UFD-Disabled Interface...............................................................................................................................967
Displaying Uplink Failure Detection..............................................................................................................................968
Sample Conguration: Uplink Failure Detection.........................................................................................................970
59 Upgrade Procedures................................................................................................................................ 972
Get Help with Upgrades................................................................................................................................................972
60 Virtual LANs (VLANs).............................................................................................................................. 973
Default VLAN..................................................................................................................................................................974
Port-Based VLANs.........................................................................................................................................................974
VLANs and Port Tagging...............................................................................................................................................975
Conguration Task List..................................................................................................................................................975
Creating a Port-Based VLAN................................................................................................................................. 975
Assigning Interfaces to a VLAN............................................................................................................................. 976
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