Administrator Guide

Configuring Route Leaking with Filtering..................................................................................................................961
Configuring Route Leaking without Filtering Criteria..............................................................................................962
64 Virtual Link Trunking (VLT)..................................................................................................... 964
Overview............................................................................................................................................................................ 964
VLT on Core Switches................................................................................................................................................966
VLT Terminology............................................................................................................................................................... 966
Important Points to Remember.......................................................................................................................................966
Configuration Notes..........................................................................................................................................................967
Primary and Secondary VLT Peers.................................................................................................................................969
RSTP and VLT................................................................................................................................................................... 970
VLT Bandwidth Monitoring..............................................................................................................................................970
VLT and High Availability..................................................................................................................................................970
VLT and IGMP Snooping..................................................................................................................................................970
VLT and Stacking...............................................................................................................................................................971
VLT IPv6..............................................................................................................................................................................971
VLT Port Delayed Restoration..........................................................................................................................................971
PIM-Sparse Mode Support on VLT................................................................................................................................. 971
VLT Routing ...................................................................................................................................................................... 973
VLT Unicast Routing................................................................................................................................................... 973
VLT Multicast Routing................................................................................................................................................ 974
Non-VLT ARP Sync.......................................................................................................................................................... 975
RSTP Configuration.......................................................................................................................................................... 975
Preventing Forwarding Loops in a VLT Domain...................................................................................................... 975
Sample RSTP Configuration...................................................................................................................................... 975
Configuring VLT.................................................................................................................................................................976
Configuring a VLT Interconnect................................................................................................................................ 976
Enabling VLT and Creating a VLT Domain............................................................................................................... 977
Configuring a VLT Backup Link..................................................................................................................................977
Configuring a VLT Port Delay Period........................................................................................................................978
Reconfiguring the Default VLT Settings (Optional) ...............................................................................................978
Connecting a VLT Domain to an Attached Access Device (Switch or Server).................................................. 979
Configuring a VLT VLAN Peer-Down (Optional).................................................................................................... 979
Configuring Enhanced VLT (eVLT) (Optional)........................................................................................................980
VLT Sample Configuration..........................................................................................................................................981
eVLT Configuration Example........................................................................................................................................... 984
PIM-Sparse Mode Configuration Example.................................................................................................................... 986
Verifying a VLT Configuration..........................................................................................................................................987
Additional VLT Sample Configurations...........................................................................................................................990
Troubleshooting VLT........................................................................................................................................................ 992
Reconfiguring Stacked Switches as VLT.......................................................................................................................993
Specifying VLT Nodes in a PVLAN................................................................................................................................. 993
Configuring a VLT VLAN or LAG in a PVLAN............................................................................................................... 996
Creating a VLT LAG or a VLT VLAN.........................................................................................................................996
Associating the VLT LAG or VLT VLAN in a PVLAN.............................................................................................. 997
Proxy ARP Capability on VLT Peer Nodes.....................................................................................................................997
VLT Nodes as Rendezvous Points for Multicast Resiliency........................................................................................ 998
Configuring VLAN-Stack over VLT................................................................................................................................ 999
Configure BFD in VLT Domain........................................................................................................................................1001
Sample BFD configuration in VLT domain...............................................................................................................1001
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