Setup Guide

Table Of Contents
Chapter 55: Uplink Failure Detection (UFD).............................................................................. 850
Feature Description........................................................................................................................................................850
How Uplink Failure Detection Works.......................................................................................................................... 851
UFD and NIC Teaming................................................................................................................................................... 852
Important Points to Remember...................................................................................................................................852
Configuring Uplink Failure Detection..........................................................................................................................853
Clearing a UFD-Disabled Interface............................................................................................................................. 854
Displaying Uplink Failure Detection............................................................................................................................ 855
Sample Configuration: Uplink Failure Detection...................................................................................................... 857
Chapter 56: Upgrade Procedures.............................................................................................. 858
Chapter 57: Virtual LANs (VLANs).............................................................................................859
Default VLAN................................................................................................................................................................... 859
Port-Based VLANs......................................................................................................................................................... 860
VLANs and Port Tagging.............................................................................................................................................. 860
Configuration Task List.................................................................................................................................................. 861
Creating a Port-Based VLAN..................................................................................................................................861
Assigning Interfaces to a VLAN.............................................................................................................................862
Moving Untagged Interfaces..................................................................................................................................863
Assigning an IP Address to a VLAN...................................................................................................................... 864
Configuring Native VLANs............................................................................................................................................864
Enabling Null VLAN as the Default VLAN................................................................................................................. 865
Chapter 58: Virtual Link Trunking (VLT).................................................................................... 866
Overview...........................................................................................................................................................................866
VLT Terminology....................................................................................................................................................... 868
Layer-2 Traffic in VLT Domains.............................................................................................................................869
Interspersed VLANs..................................................................................................................................................870
VLT on Core Switches............................................................................................................................................. 870
Enhanced VLT.............................................................................................................................................................871
Configure Virtual Link Trunking................................................................................................................................... 872
Important Points to Remember............................................................................................................................. 872
Configuration Notes................................................................................................................................................. 873
Primary and Secondary VLT Peers....................................................................................................................... 876
RSTP and VLT............................................................................................................................................................876
VLT Bandwidth Monitoring..................................................................................................................................... 877
VLT and Stacking...................................................................................................................................................... 877
VLT and IGMP Snooping......................................................................................................................................... 877
VLT IPv6...................................................................................................................................................................... 877
VLT Port Delayed Restoration................................................................................................................................877
PIM-Sparse Mode Support on VLT...................................................................................................................... 878
VLT Routing ...............................................................................................................................................................879
Non-VLT ARP Sync.................................................................................................................................................. 882
RSTP Configuration........................................................................................................................................................882
Preventing Forwarding Loops in a VLT Domain................................................................................................ 883
Sample RSTP configuration....................................................................................................................................883
Configuring VLT........................................................................................................................................................ 884
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