Concept Guide

Conguring a VLT VLAN Peer-Down (Optional)................................................................................................. 1116
Conguring Enhanced VLT (eVLT) (Optional)..................................................................................................... 1117
VLT Sample Conguration...................................................................................................................................... 1119
eVLT Conguration Example....................................................................................................................................... 1122
eVLT Conguration Step Examples...................................................................................................................... 1122
PIM-Sparse Mode Conguration Example................................................................................................................ 1124
Verifying a VLT Conguration......................................................................................................................................1125
Additional VLT Sample Congurations....................................................................................................................... 1128
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).......................................... 1128
Troubleshooting VLT..................................................................................................................................................... 1130
Reconguring Stacked Switches as VLT.................................................................................................................... 1131
Specifying VLT Nodes in a PVLAN..............................................................................................................................1131
Association of VLTi as a Member of a PVLAN....................................................................................................1132
MAC Synchronization for VLT Nodes in a PVLAN..............................................................................................1132
PVLAN Operations When One VLT Peer is Down.............................................................................................. 1133
PVLAN Operations When a VLT Peer is Restarted............................................................................................ 1133
Interoperation of VLT Nodes in a PVLAN with ARP Requests..........................................................................1133
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN............................1134
Conguring a VLT VLAN or LAG in a PVLAN........................................................................................................... 1135
Creating a VLT LAG or a VLT VLAN..................................................................................................................... 1135
Associating the VLT LAG or VLT VLAN in a PVLAN.......................................................................................... 1136
Proxy ARP Capability on VLT Peer Nodes................................................................................................................. 1137
Working of Proxy ARP for VLT Peer Nodes.........................................................................................................1137
VLT Nodes as Rendezvous Points for Multicast Resiliency.....................................................................................1138
Conguring VLAN-Stack over VLT.............................................................................................................................1139
Congure BFD in VLT Domain......................................................................................................................................1141
Sample BFD conguration in VLT domain.............................................................................................................1141
65 Virtual Router Redundancy Protocol (VRRP)..........................................................................................1145
VRRP Overview............................................................................................................................................................ 1145
VRRP Benets...............................................................................................................................................................1146
VRRP Implementation.................................................................................................................................................. 1146
VRRP Conguration......................................................................................................................................................1147
Conguration Task List........................................................................................................................................... 1147
Sample Congurations..................................................................................................................................................1157
VRRP for an IPv4 Conguration........................................................................................................................... 1157
VRRP in a VRF Conguration................................................................................................................................1159
Proxy Gateway with VRRP..........................................................................................................................................1163
66 Standards Compliance............................................................................................................................ 1169
IEEE Compliance...........................................................................................................................................................1169
RFC and I-D Compliance..............................................................................................................................................1170
General Internet Protocols..................................................................................................................................... 1170
Border Gateway Protocol (BGP)...........................................................................................................................1170
General IPv4 Protocols............................................................................................................................................1171
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