Users Guide

52 System Time and Date..............................................................................................................................781
Network Time Protocol..................................................................................................................................................781
Protocol Overview................................................................................................................................................... 782
Congure the Network Time Protocol.................................................................................................................. 782
Enabling NTP............................................................................................................................................................783
Conguring NTP Broadcasts..................................................................................................................................783
Disabling NTP on an Interface................................................................................................................................784
Conguring a Source IP Address for NTP Packets............................................................................................. 784
Conguring NTP Authentication............................................................................................................................784
Conguring a Custom-dened Period for NTP time Synchronization.............................................................. 787
Dell Networking OS Time and Date............................................................................................................................. 787
Conguration Task List ........................................................................................................................................... 787
Setting the Time and Date for the Switch Software Clock................................................................................787
Setting the Timezone.............................................................................................................................................. 788
Set Daylight Saving Time........................................................................................................................................ 788
Setting Daylight Saving Time Once....................................................................................................................... 788
Setting Recurring Daylight Saving Time................................................................................................................789
53 Tunneling..................................................................................................................................................791
Conguring a Tunnel.......................................................................................................................................................791
Conguring Tunnel Keepalive Settings........................................................................................................................792
Conguring a Tunnel Interface..................................................................................................................................... 792
Conguring Tunnel Allow-Remote Decapsulation......................................................................................................793
Conguring the Tunnel Source Anylocal..................................................................................................................... 793
54 Uplink Failure Detection (UFD)................................................................................................................ 795
Feature Description....................................................................................................................................................... 795
How Uplink Failure Detection Works........................................................................................................................... 796
UFD and NIC Teaming................................................................................................................................................... 797
Important Points to Remember....................................................................................................................................797
Conguring Uplink Failure Detection........................................................................................................................... 798
Clearing a UFD-Disabled Interface.............................................................................................................................. 799
Displaying Uplink Failure Detection..............................................................................................................................800
Sample Conguration: Uplink Failure Detection.........................................................................................................802
55 Upgrade Procedures................................................................................................................................804
Get Help with Upgrades............................................................................................................................................... 804
56 Virtual LANs (VLANs)..............................................................................................................................805
Default VLAN................................................................................................................................................................. 806
Port-Based VLANs........................................................................................................................................................ 806
VLANs and Port Tagging.............................................................................................................................................. 806
Conguration Task List..................................................................................................................................................807
Creating a Port-Based VLAN................................................................................................................................. 807
Assigning Interfaces to a VLAN.............................................................................................................................808
Moving Untagged Interfaces................................................................................................................................. 809
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