Deployment Guide

Table Of Contents
Setting Recurring Daylight Saving Time.............................................................................................................. 910
Chapter 55: Tunneling............................................................................................................... 912
Configuring a Tunnel.......................................................................................................................................................912
Configuring Tunnel Keepalive Settings.......................................................................................................................913
Configuring a Tunnel Interface.....................................................................................................................................913
Configuring Tunnel Allow-Remote Decapsulation....................................................................................................914
Configuring Tunnel source anylocal Decapsulation................................................................................................. 914
Guidelines for Configuring Multipoint Receive-Only Tunnels............................................................................... 915
Multipoint Receive-Only Tunnels.................................................................................................................................915
Chapter 56: Uplink Failure Detection (UFD)............................................................................... 916
Feature Description.........................................................................................................................................................916
How Uplink Failure Detection Works...........................................................................................................................917
UFD and NIC Teaming.................................................................................................................................................... 918
Important Points to Remember....................................................................................................................................918
Configuring Uplink Failure Detection.......................................................................................................................... 919
Clearing a UFD-Disabled Interface............................................................................................................................. 920
Displaying Uplink Failure Detection............................................................................................................................. 921
Sample Configuration: Uplink Failure Detection......................................................................................................923
Chapter 57: Upgrade Procedures...............................................................................................924
Chapter 58: Virtual LANs (VLANs).............................................................................................925
Default VLAN................................................................................................................................................................... 925
Port-Based VLANs......................................................................................................................................................... 926
VLANs and Port Tagging.............................................................................................................................................. 926
Configuration Task List..................................................................................................................................................927
Creating a Port-Based VLAN................................................................................................................................. 927
Assigning Interfaces to a VLAN.............................................................................................................................928
Moving Untagged Interfaces..................................................................................................................................929
Assigning an IP Address to a VLAN......................................................................................................................930
Configuring Native VLANs............................................................................................................................................930
Enabling Null VLAN as the Default VLAN.................................................................................................................. 931
Chapter 59: Virtual Link Trunking (VLT).................................................................................... 932
Overview...........................................................................................................................................................................932
VLT Terminology....................................................................................................................................................... 934
Layer-2 Traffic in VLT Domains.............................................................................................................................935
Interspersed VLANs..................................................................................................................................................936
VLT on Core Switches............................................................................................................................................. 936
Enhanced VLT............................................................................................................................................................937
Configure Virtual Link Trunking...................................................................................................................................938
Important Points to Remember............................................................................................................................. 938
Configuration Notes................................................................................................................................................. 939
Primary and Secondary VLT Peers....................................................................................................................... 942
RSTP and VLT........................................................................................................................................................... 942
VLT Bandwidth Monitoring.....................................................................................................................................943
VLT and Stacking...................................................................................................................................................... 943
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