Install Guide

Table Of Contents
UFD and NIC Teaming................................................................................................................................................... 960
Important Points to Remember...................................................................................................................................960
Configuring Uplink Failure Detection.......................................................................................................................... 961
Clearing a UFD-Disabled Interface............................................................................................................................. 962
Displaying Uplink Failure Detection.............................................................................................................................963
Sample Configuration: Uplink Failure Detection......................................................................................................965
Chapter 60: Upgrade Procedures.............................................................................................. 966
Chapter 61: Virtual LANs (VLANs)............................................................................................. 967
Default VLAN................................................................................................................................................................... 967
Port-Based VLANs......................................................................................................................................................... 968
VLANs and Port Tagging.............................................................................................................................................. 968
Configuration Task List................................................................................................................................................. 969
Creating a Port-Based VLAN.................................................................................................................................969
Assigning Interfaces to a VLAN.............................................................................................................................970
Moving Untagged Interfaces...................................................................................................................................971
Assigning an IP Address to a VLAN...................................................................................................................... 972
Configuring Native VLANs............................................................................................................................................972
Enabling Null VLAN as the Default VLAN..................................................................................................................973
Chapter 62: Virtual Link Trunking (VLT).................................................................................... 974
Overview........................................................................................................................................................................... 974
VLT Terminology....................................................................................................................................................... 976
Layer-2 Traffic in VLT Domains............................................................................................................................. 977
Interspersed VLANs..................................................................................................................................................978
VLT on Core Switches............................................................................................................................................. 978
Enhanced VLT............................................................................................................................................................979
Configure Virtual Link Trunking...................................................................................................................................980
Important Points to Remember.............................................................................................................................980
Configuration Notes..................................................................................................................................................981
Primary and Secondary VLT Peers....................................................................................................................... 984
RSTP and VLT........................................................................................................................................................... 984
VLT Bandwidth Monitoring.....................................................................................................................................985
VLT and Stacking......................................................................................................................................................985
VLT and IGMP Snooping.........................................................................................................................................985
VLT IPv6..................................................................................................................................................................... 985
VLT Port Delayed Restoration............................................................................................................................... 986
PIM-Sparse Mode Support on VLT...................................................................................................................... 986
VLT Routing .............................................................................................................................................................. 988
Non-VLT ARP Sync...................................................................................................................................................991
RSTP Configuration........................................................................................................................................................ 991
Preventing Forwarding Loops in a VLT Domain................................................................................................. 991
Sample RSTP configuration....................................................................................................................................992
Configuring VLT........................................................................................................................................................ 992
PVST+ Configuration.................................................................................................................................................... 1001
Peer Routing Configuration Example....................................................................................................................... 1002
Dell-1 Switch Configuration.................................................................................................................................. 1003
Dell-2 Switch Configuration..................................................................................................................................1007
28
Contents