Users Guide

Table Of Contents
Setting Recurring Daylight Saving Time............................................................................................................... 963
55 Tunneling.................................................................................................................................................965
Conguring a Tunnel..................................................................................................................................................... 965
Conguring Tunnel Keepalive Settings........................................................................................................................966
Conguring a Tunnel Interface..................................................................................................................................... 967
Conguring Tunnel Allow-Remote Decapsulation......................................................................................................967
Conguring Tunnel source anylocal Decapsulation....................................................................................................968
Guidelines for Conguring Multipoint Receive-Only Tunnels................................................................................... 968
Multipoint Receive-Only Tunnels................................................................................................................................. 968
56 Uplink Failure Detection (UFD)................................................................................................................ 969
Feature Description....................................................................................................................................................... 969
How Uplink Failure Detection Works........................................................................................................................... 970
UFD and NIC Teaming....................................................................................................................................................971
Important Points to Remember.................................................................................................................................... 971
Conguring Uplink Failure Detection........................................................................................................................... 972
Clearing a UFD-Disabled Interface...............................................................................................................................973
Displaying Uplink Failure Detection.............................................................................................................................. 974
Sample Conguration: Uplink Failure Detection......................................................................................................... 976
57 Upgrade Procedures................................................................................................................................ 978
Get Help with Upgrades................................................................................................................................................978
58 Virtual LANs (VLANs).............................................................................................................................. 979
Default VLAN................................................................................................................................................................. 980
Port-Based VLANs........................................................................................................................................................ 980
VLANs and Port Tagging............................................................................................................................................... 981
Conguration Task List.................................................................................................................................................. 981
Creating a Port-Based VLAN..................................................................................................................................981
Assigning Interfaces to a VLAN............................................................................................................................. 982
Moving Untagged Interfaces..................................................................................................................................983
Assigning an IP Address to a VLAN.......................................................................................................................984
Conguring Native VLANs........................................................................................................................................... 984
Enabling Null VLAN as the Default VLAN.................................................................................................................. 985
59 Virtual Link Trunking (VLT)...................................................................................................................... 986
Overview.........................................................................................................................................................................986
VLT Terminology...................................................................................................................................................... 989
Layer-2 Trac in VLT Domains.............................................................................................................................. 990
Interspersed VLANs................................................................................................................................................. 991
VLT on Core Switches............................................................................................................................................. 991
Enhanced VLT.......................................................................................................................................................... 992
Congure Virtual Link Trunking.................................................................................................................................... 993
Important Points to Remember............................................................................................................................. 993
Conguration Notes................................................................................................................................................ 994
Contents
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