Users Guide

Primary and Secondary VLT Peers............................................................................................................................ 1088
RSTP and VLT.............................................................................................................................................................. 1088
VLT Bandwidth Monitoring......................................................................................................................................... 1088
VLT and High Availability............................................................................................................................................. 1089
VLT and IGMP Snooping.............................................................................................................................................1089
VLT and Stacking......................................................................................................................................................... 1089
VLT IPv6........................................................................................................................................................................1089
VLT Port Delayed Restoration.................................................................................................................................... 1089
PIM-Sparse Mode Support on VLT........................................................................................................................... 1090
VLT Routing ..................................................................................................................................................................1091
Spanned VLANs......................................................................................................................................................1091
VLT Unicast Routing...............................................................................................................................................1091
VLT Multicast Routing........................................................................................................................................... 1092
Non-VLT ARP Sync......................................................................................................................................................1093
RSTP Conguration..................................................................................................................................................... 1093
Preventing Forwarding Loops in a VLT Domain..................................................................................................1094
Sample RSTP Conguration................................................................................................................................. 1094
Conguring VLT............................................................................................................................................................1095
Conguring a VLT Interconnect........................................................................................................................... 1095
Enabling VLT and Creating a VLT Domain...........................................................................................................1096
Conguring a VLT Backup Link.............................................................................................................................1097
Conguring a VLT Port Delay Period................................................................................................................... 1097
Reconguring the Default VLT Settings (Optional) ..........................................................................................1098
Connecting a VLT Domain to an Attached Access Device (Switch or Server)..............................................1098
Conguring a VLT VLAN Peer-Down (Optional)................................................................................................1099
Conguring Enhanced VLT (eVLT) (Optional).................................................................................................... 1100
VLT Sample Conguration..................................................................................................................................... 1102
eVLT Conguration Example....................................................................................................................................... 1105
eVLT Conguration Step Examples...................................................................................................................... 1105
PIM-Sparse Mode Conguration Example.................................................................................................................1107
Verifying a VLT Conguration......................................................................................................................................1108
Additional VLT Sample Congurations.........................................................................................................................1111
Conguring Virtual Link Trunking (VLT Peer 1)Conguring Virtual Link Trunking (VLT Peer 2)Verifying a
Port-Channel Connection to a VLT Domain (From an Attached Access Switch)............................................1111
Troubleshooting VLT......................................................................................................................................................1113
Reconguring Stacked Switches as VLT.................................................................................................................... 1114
Specifying VLT Nodes in a PVLAN..............................................................................................................................1114
Association of VLTi as a Member of a PVLAN.....................................................................................................1115
MAC Synchronization for VLT Nodes in a PVLAN.............................................................................................. 1115
PVLAN Operations When One VLT Peer is Down...............................................................................................1116
PVLAN Operations When a VLT Peer is Restarted.............................................................................................1116
Interoperation of VLT Nodes in a PVLAN with ARP Requests.......................................................................... 1116
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN............................ 1117
Conguring a VLT VLAN or LAG in a PVLAN............................................................................................................ 1118
Creating a VLT LAG or a VLT VLAN......................................................................................................................1118
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