Users Guide

Setting Recurring Daylight Saving Time............................................................................................................... 895
52 Tunneling................................................................................................................................................. 897
Conguring a Tunnel......................................................................................................................................................897
Conguring Tunnel Keepalive Settings........................................................................................................................898
Conguring a Tunnel Interface.....................................................................................................................................899
Conguring Tunnel Allow-Remote Decapsulation......................................................................................................899
Conguring Tunnel source anylocal Decapsulation................................................................................................... 900
Guidelines for Conguring Multipoint Receive-Only Tunnels...................................................................................900
Multipoint Receive-Only Tunnels.................................................................................................................................900
53 Uplink Failure Detection (UFD).................................................................................................................901
Feature Description........................................................................................................................................................901
How Uplink Failure Detection Works...........................................................................................................................902
UFD and NIC Teaming...................................................................................................................................................903
Important Points to Remember................................................................................................................................... 903
Conguring Uplink Failure Detection...........................................................................................................................904
Clearing a UFD-Disabled Interface.............................................................................................................................. 905
Displaying Uplink Failure Detection..............................................................................................................................906
Sample Conguration: Uplink Failure Detection.........................................................................................................908
54 Upgrade Procedures................................................................................................................................909
Get Help with Upgrades............................................................................................................................................... 909
55 Virtual LANs (VLANs).............................................................................................................................. 910
Default VLAN...................................................................................................................................................................911
Port-Based VLANs..........................................................................................................................................................911
VLANs and Port Tagging............................................................................................................................................... 912
Conguration Task List.................................................................................................................................................. 912
Creating a Port-Based VLAN..................................................................................................................................912
Assigning Interfaces to a VLAN..............................................................................................................................913
Moving Untagged Interfaces.................................................................................................................................. 914
Assigning an IP Address to a VLAN....................................................................................................................... 915
Conguring Native VLANs............................................................................................................................................915
Enabling Null VLAN as the Default VLAN................................................................................................................... 916
56 Virtual Link Trunking (VLT)....................................................................................................................... 917
Overview..........................................................................................................................................................................917
VLT Terminology...................................................................................................................................................... 920
Layer-2 Trac in VLT Domains............................................................................................................................... 921
Interspersed VLANs................................................................................................................................................ 922
VLT on Core Switches.............................................................................................................................................922
Enhanced VLT.......................................................................................................................................................... 923
Congure Virtual Link Trunking.................................................................................................................................... 924
Important Points to Remember..............................................................................................................................924
Conguration Notes................................................................................................................................................ 925
Contents
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