Concept Guide

Table Of Contents
VLT Port Delayed Restoration...............................................................................................................................1007
PIM-Sparse Mode Support on VLT..................................................................................................................... 1008
VLT Routing ............................................................................................................................................................1010
Non-VLT ARP Sync................................................................................................................................................ 1012
RSTP Conguration......................................................................................................................................................1012
Preventing Forwarding Loops in a VLT Domain.................................................................................................. 1013
Sample RSTP conguration...................................................................................................................................1013
Conguring VLT...................................................................................................................................................... 1014
PVST+ Conguration................................................................................................................................................... 1024
Sample PVST+ Conguration............................................................................................................................... 1024
eVLT Conguration Example...................................................................................................................................... 1025
eVLT Conguration Step Examples..................................................................................................................... 1026
PIM-Sparse Mode Conguration Example................................................................................................................1027
Verifying a VLT Conguration..................................................................................................................................... 1028
Additional VLT Sample Congurations....................................................................................................................... 1031
Troubleshooting VLT.................................................................................................................................................... 1033
Reconguring Stacked Switches as VLT...................................................................................................................1034
Specifying VLT Nodes in a PVLAN............................................................................................................................ 1034
Association of VLTi as a Member of a PVLAN...................................................................................................1035
MAC Synchronization for VLT Nodes in a PVLAN.............................................................................................1035
PVLAN Operations When One VLT Peer is Down............................................................................................. 1036
PVLAN Operations When a VLT Peer is Restarted........................................................................................... 1036
Interoperation of VLT Nodes in a PVLAN with ARP Requests.........................................................................1036
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN...........................1037
Conguring a VLT VLAN or LAG in a PVLAN...........................................................................................................1038
Creating a VLT LAG or a VLT VLAN.................................................................................................................... 1038
Associating the VLT LAG or VLT VLAN in a PVLAN......................................................................................... 1039
Proxy ARP Capability on VLT Peer Nodes................................................................................................................1040
Working of Proxy ARP for VLT Peer Nodes....................................................................................................... 1040
VLT Nodes as Rendezvous Points for Multicast Resiliency.....................................................................................1041
Conguring VLAN-Stack over VLT............................................................................................................................1042
IPv6 Peer Routing in VLT Domains Overview.......................................................................................................... 1045
IPv6 Peer Routing..................................................................................................................................................1045
Synchronization of IPv6 ND Entries in a VLT Domain.......................................................................................1045
Synchronization of IPv6 ND Entries in a Non-VLT Domain.............................................................................. 1046
Tunneling IPv6 ND in a VLT Domain.................................................................................................................... 1046
Sample Conguration of IPv6 Peer Routing in a VLT Domain..........................................................................1047
62 Virtual Routing and Forwarding (VRF).................................................................................................... 1051
VRF Overview............................................................................................................................................................... 1051
VRF Conguration Notes............................................................................................................................................ 1052
DHCP.......................................................................................................................................................................1054
VRF Conguration....................................................................................................................................................... 1054
Loading VRF CAM................................................................................................................................................. 1054
Creating a Non-Default VRF Instance.................................................................................................................1054
Assigning an Interface to a VRF...........................................................................................................................1055
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