Deployment Guide

Setting Daylight Saving Time Once.......................................................................................................................919
Setting Recurring Daylight Saving Time...............................................................................................................919
Chapter 55: Tunneling............................................................................................................... 921
Configuring a Tunnel.......................................................................................................................................................921
Configuring Tunnel Keepalive Settings......................................................................................................................922
Configuring a Tunnel Interface.................................................................................................................................... 922
Configuring Tunnel Allow-Remote Decapsulation...................................................................................................923
Configuring Tunnel source anylocal Decapsulation.................................................................................................923
Guidelines for Configuring Multipoint Receive-Only Tunnels...............................................................................924
Multipoint Receive-Only Tunnels................................................................................................................................ 924
Chapter 56: Uplink Failure Detection (UFD).............................................................................. 925
Feature Description........................................................................................................................................................925
How Uplink Failure Detection Works..........................................................................................................................926
UFD and NIC Teaming................................................................................................................................................... 927
Important Points to Remember................................................................................................................................... 927
Configuring Uplink Failure Detection..........................................................................................................................928
Clearing a UFD-Disabled Interface............................................................................................................................. 929
Displaying Uplink Failure Detection.............................................................................................................................930
Sample Configuration: Uplink Failure Detection......................................................................................................932
Chapter 57: Upgrade Procedures...............................................................................................934
Chapter 58: Virtual LANs (VLANs).............................................................................................935
Default VLAN................................................................................................................................................................... 935
Port-Based VLANs......................................................................................................................................................... 936
VLANs and Port Tagging...............................................................................................................................................936
Configuration Task List..................................................................................................................................................937
Creating a Port-Based VLAN................................................................................................................................. 937
Assigning Interfaces to a VLAN.............................................................................................................................938
Moving Untagged Interfaces..................................................................................................................................939
Assigning an IP Address to a VLAN......................................................................................................................940
Configuring Native VLANs............................................................................................................................................940
Enabling Null VLAN as the Default VLAN.................................................................................................................. 941
Chapter 59: Virtual Link Trunking (VLT).................................................................................... 942
Overview...........................................................................................................................................................................942
VLT Terminology....................................................................................................................................................... 944
Layer-2 Traffic in VLT Domains.............................................................................................................................945
Interspersed VLANs..................................................................................................................................................946
VLT on Core Switches............................................................................................................................................. 946
Enhanced VLT............................................................................................................................................................947
Configure Virtual Link Trunking...................................................................................................................................948
Important Points to Remember............................................................................................................................. 948
Configuration Notes.................................................................................................................................................950
Primary and Secondary VLT Peers.......................................................................................................................952
RSTP and VLT........................................................................................................................................................... 953
VLT Bandwidth Monitoring.....................................................................................................................................953
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