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Table Of Contents
Interspersed VLANs..................................................................................................................................................947
VLT on Core Switches............................................................................................................................................. 947
Enhanced VLT............................................................................................................................................................948
Configure Virtual Link Trunking...................................................................................................................................949
Important Points to Remember............................................................................................................................. 949
Configuration Notes.................................................................................................................................................950
Primary and Secondary VLT Peers.......................................................................................................................953
RSTP and VLT........................................................................................................................................................... 953
VLT Bandwidth Monitoring.....................................................................................................................................954
VLT and Stacking......................................................................................................................................................954
VLT and IGMP Snooping.........................................................................................................................................954
VLT IPv6......................................................................................................................................................................954
VLT Port Delayed Restoration...............................................................................................................................955
PIM-Sparse Mode Support on VLT...................................................................................................................... 955
VLT Routing .............................................................................................................................................................. 957
Non-VLT ARP Sync..................................................................................................................................................960
RSTP Configuration....................................................................................................................................................... 960
Preventing Forwarding Loops in a VLT Domain................................................................................................ 960
Sample RSTP configuration.................................................................................................................................... 961
Configuring VLT......................................................................................................................................................... 961
PVST+ Configuration..................................................................................................................................................... 970
Peer Routing Configuration Example.......................................................................................................................... 971
Dell-1 Switch Configuration.................................................................................................................................... 972
Dell-2 Switch Configuration................................................................................................................................... 975
R1 Configuration........................................................................................................................................................ 978
Access Switch A1 Configurations and Verification........................................................................................... 979
eVLT Configuration Example....................................................................................................................................... 980
PIM-Sparse Mode Configuration Example................................................................................................................982
Verifying a VLT Configuration..................................................................................................................................... 983
Additional VLT Sample Configurations...................................................................................................................... 986
Troubleshooting VLT...................................................................................................................................................... 987
Reconfiguring Stacked Switches as VLT.................................................................................................................. 988
Specifying VLT Nodes in a PVLAN.............................................................................................................................989
Configuring a VLT VLAN or LAG in a PVLAN.......................................................................................................... 992
Creating a VLT LAG or a VLT VLAN.................................................................................................................... 992
Associating the VLT LAG or VLT VLAN in a PVLAN........................................................................................ 993
Proxy ARP Capability on VLT Peer Nodes................................................................................................................993
VLT Nodes as Rendezvous Points for Multicast Resiliency.................................................................................995
Configuring VLAN-Stack over VLT............................................................................................................................ 995
IPv6 Peer Routing in VLT Domains Overview..........................................................................................................998
Configure BFD in VLT Domain................................................................................................................................... 1002
Sample BFD configuration in VLT domain.........................................................................................................1002
VXLAN on VLT...............................................................................................................................................................1006
Chapter 59: VLT Proxy Gateway...............................................................................................1009
Proxy Gateway in VLT Domains................................................................................................................................ 1009
LLDP VLT Proxy Gateway in a Square VLT Topology.................................................................................... 1012
Configuring a Static VLT Proxy Gateway................................................................................................................ 1013
Configuring an LLDP VLT Proxy Gateway...............................................................................................................1013
VLT Proxy Gateway Sample Topology......................................................................................................................1014
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