Deployment Guide

Table Of Contents
VLT Terminology............................................................................................................................................................ 1015
Important Points to Remember.................................................................................................................................. 1015
Configuration Notes...................................................................................................................................................... 1016
Primary and Secondary VLT Peers............................................................................................................................ 1019
RSTP and VLT................................................................................................................................................................ 1019
VLT Bandwidth Monitoring..........................................................................................................................................1019
VLT and High Availability.............................................................................................................................................1020
VLT and IGMP Snooping............................................................................................................................................. 1020
VLT and Stacking.......................................................................................................................................................... 1020
VLT IPv6..........................................................................................................................................................................1020
VLT Port Delayed Restoration................................................................................................................................... 1020
PIM-Sparse Mode Support on VLT........................................................................................................................... 1021
VLT Routing ...................................................................................................................................................................1022
VLT Unicast Routing...............................................................................................................................................1022
VLT Multicast Routing........................................................................................................................................... 1023
Non-VLT ARP Sync...................................................................................................................................................... 1024
RSTP Configuration......................................................................................................................................................1024
Preventing Forwarding Loops in a VLT Domain...............................................................................................1024
Sample RSTP Configuration................................................................................................................................. 1025
Configuring VLT.............................................................................................................................................................1025
Configuring a VLT Interconnect.......................................................................................................................... 1025
Enabling VLT and Creating a VLT Domain........................................................................................................ 1026
Configuring a VLT Backup Link............................................................................................................................ 1027
Configuring a VLT Port Delay Period..................................................................................................................1027
Reconfiguring the Default VLT Settings (Optional) ...................................................................................... 1027
Connecting a VLT Domain to an Attached Access Device (Switch or Server)....................................... 1028
Configuring a VLT VLAN Peer-Down (Optional).............................................................................................1029
Configuring Enhanced VLT (eVLT) (Optional)................................................................................................ 1029
VLT Sample Configuration..................................................................................................................................... 1031
eVLT Configuration Example...................................................................................................................................... 1034
PIM-Sparse Mode Configuration Example..............................................................................................................1036
Verifying a VLT Configuration....................................................................................................................................1036
Additional VLT Sample Configurations.....................................................................................................................1040
Troubleshooting VLT..................................................................................................................................................... 1041
Reconfiguring Stacked Switches as VLT................................................................................................................ 1043
Specifying VLT Nodes in a PVLAN........................................................................................................................... 1043
Configuring a VLT VLAN or LAG in a PVLAN.........................................................................................................1046
Creating a VLT LAG or a VLT VLAN...................................................................................................................1046
Associating the VLT LAG or VLT VLAN in a PVLAN.......................................................................................1047
Proxy ARP Capability on VLT Peer Nodes.............................................................................................................. 1048
VLT Nodes as Rendezvous Points for Multicast Resiliency............................................................................... 1049
Configuring VLAN-Stack over VLT...........................................................................................................................1049
Chapter 65: Virtual Router Redundancy Protocol (VRRP)........................................................ 1053
VRRP Overview............................................................................................................................................................. 1053
VRRP Benefits............................................................................................................................................................... 1054
VRRP Implementation.................................................................................................................................................. 1054
VRRP Configuration..................................................................................................................................................... 1055
Configuration Task List..........................................................................................................................................1055
Sample Configurations................................................................................................................................................. 1063
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