Users Guide
Enhanced VLT........................................................................................................................................................ 1049
Congure Virtual Link Trunking.................................................................................................................................. 1050
Important Points to Remember............................................................................................................................1050
Conguration Notes................................................................................................................................................1051
Primary and Secondary VLT Peers...................................................................................................................... 1054
RSTP and VLT........................................................................................................................................................ 1055
VLT Bandwidth Monitoring...................................................................................................................................1055
VLT and Stacking................................................................................................................................................... 1055
VLT and IGMP Snooping.......................................................................................................................................1055
VLT IPv6..................................................................................................................................................................1056
VLT Port Delayed Restoration.............................................................................................................................. 1056
PIM-Sparse Mode Support on VLT..................................................................................................................... 1056
VLT Routing ........................................................................................................................................................... 1058
Non-VLT ARP Sync................................................................................................................................................ 1061
RSTP Conguration.....................................................................................................................................................1062
Preventing Forwarding Loops in a VLT Domain..................................................................................................1062
Sample RSTP conguration..................................................................................................................................1062
Conguring VLT......................................................................................................................................................1063
PVST+ Conguration................................................................................................................................................... 1073
Sample PVST+ Conguration................................................................................................................................1074
Peer Routing Conguration Example......................................................................................................................... 1074
Dell-1 Switch Conguration................................................................................................................................... 1075
Dell-2 Switch Conguration.................................................................................................................................. 1079
R1 Conguration..................................................................................................................................................... 1082
Access Switch A1 Congurations and Verication.............................................................................................1083
eVLT Conguration Example...................................................................................................................................... 1084
eVLT Conguration Step Examples..................................................................................................................... 1084
PIM-Sparse Mode Conguration Example............................................................................................................... 1086
Verifying a VLT Conguration..................................................................................................................................... 1087
Additional VLT Sample Congurations...................................................................................................................... 1090
Troubleshooting VLT.................................................................................................................................................... 1092
Reconguring Stacked Switches as VLT...................................................................................................................1093
Specifying VLT Nodes in a PVLAN............................................................................................................................ 1093
Association of VLTi as a Member of a PVLAN...................................................................................................1094
MAC Synchronization for VLT Nodes in a PVLAN.............................................................................................1094
PVLAN Operations When One VLT Peer is Down.............................................................................................1095
PVLAN Operations When a VLT Peer is Restarted........................................................................................... 1095
Interoperation of VLT Nodes in a PVLAN with ARP Requests.........................................................................1095
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN.......................... 1095
Conguring a VLT VLAN or LAG in a PVLAN...........................................................................................................1097
Creating a VLT LAG or a VLT VLAN.................................................................................................................... 1097
Associating the VLT LAG or VLT VLAN in a PVLAN......................................................................................... 1098
Proxy ARP Capability on VLT Peer Nodes................................................................................................................1099
Working of Proxy ARP for VLT Peer Nodes....................................................................................................... 1099
VLT Nodes as Rendezvous Points for Multicast Resiliency.....................................................................................1100
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