Connectivity Guide

Table Of Contents
Set Daylight Saving Time........................................................................................................................................ 953
Setting Daylight Saving Time Once......................................................................................................................953
Setting Recurring Daylight Saving Time..............................................................................................................954
Chapter 59: Tunneling...............................................................................................................956
Configuring a Tunnel......................................................................................................................................................956
Configuring Tunnel Keepalive Settings......................................................................................................................957
Configuring a Tunnel Interface.................................................................................................................................... 957
Configuring Tunnel Allow-Remote Decapsulation...................................................................................................958
Configuring the Tunnel Source Anylocal................................................................................................................... 958
Chapter 60: Uplink Failure Detection (UFD).............................................................................. 960
Feature Description........................................................................................................................................................960
How Uplink Failure Detection Works.......................................................................................................................... 961
UFD and NIC Teaming................................................................................................................................................... 962
Important Points to Remember................................................................................................................................... 962
Configuring Uplink Failure Detection..........................................................................................................................963
Clearing a UFD-Disabled Interface............................................................................................................................. 964
Displaying Uplink Failure Detection............................................................................................................................ 965
Sample Configuration: Uplink Failure Detection...................................................................................................... 967
Chapter 61: Upgrade Procedures............................................................................................... 968
Chapter 62: Virtual LANs (VLANs).............................................................................................969
Default VLAN................................................................................................................................................................... 969
Port-Based VLANs..........................................................................................................................................................970
VLANs and Port Tagging...............................................................................................................................................970
Configuration Task List.................................................................................................................................................. 971
Creating a Port-Based VLAN.................................................................................................................................. 971
Assigning Interfaces to a VLAN.............................................................................................................................972
Moving Untagged Interfaces..................................................................................................................................973
Assigning an IP Address to a VLAN...................................................................................................................... 974
Configuring Native VLANs............................................................................................................................................974
Enabling Null VLAN as the Default VLAN................................................................................................................. 975
Chapter 63: Virtual Link Trunking (VLT).................................................................................... 976
Overview........................................................................................................................................................................... 976
VLT Terminology....................................................................................................................................................... 978
Layer-2 Traffic in VLT Domains.............................................................................................................................979
Interspersed VLANs................................................................................................................................................. 980
VLT on Core Switches.............................................................................................................................................980
Enhanced VLT............................................................................................................................................................ 981
Configure Virtual Link Trunking...................................................................................................................................982
Important Points to Remember............................................................................................................................. 982
Configuration Notes................................................................................................................................................. 983
Primary and Secondary VLT Peers.......................................................................................................................986
RSTP and VLT........................................................................................................................................................... 986
VLT Bandwidth Monitoring.....................................................................................................................................987
VLT and Stacking...................................................................................................................................................... 987
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Contents