Users Guide
PIM-Sparse Mode Support on VLT.......................................................................................................................... 883
VLT Routing ............................................................................................................................................................ 885
Non-VLT ARP Sync.................................................................................................................................................. 887
RSTP Conguration........................................................................................................................................................887
Preventing Forwarding Loops in a VLT Domain.........................................................................................................887
Sample RSTP Conguration..................................................................................................................................... 887
Conguring VLT....................................................................................................................................................... 888
PVST+ Conguration..................................................................................................................................................... 898
Sample PVST+ Conguration...................................................................................................................................898
eVLT Conguration Example.......................................................................................................................................... 899
eVLT Conguration Step Examples..........................................................................................................................899
PIM-Sparse Mode Conguration Example...................................................................................................................... 901
Verifying a VLT Conguration.........................................................................................................................................902
Additional VLT Sample Congurations............................................................................................................................905
Conguring Virtual Link Trunking (VLT Peer 1)Conguring Virtual Link Trunking (VLT Peer 2)Verifying a Port-
Channel Connection to a VLT Domain (From an Attached Access Switch)..............................................................905
Troubleshooting VLT.......................................................................................................................................................907
Reconguring Stacked Switches as VLT........................................................................................................................ 908
Specifying VLT Nodes in a PVLAN.................................................................................................................................908
Association of VLTi as a Member of a PVLAN..........................................................................................................909
MAC Synchronization for VLT Nodes in a PVLAN....................................................................................................909
PVLAN Operations When One VLT Peer is Down.....................................................................................................910
PVLAN Operations When a VLT Peer is Restarted................................................................................................... 910
Interoperation of VLT Nodes in a PVLAN with ARP Requests...................................................................................910
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN......................................... 910
Conguring a VLT VLAN or LAG in a PVLAN..................................................................................................................912
Creating a VLT LAG or a VLT VLAN..........................................................................................................................912
Associating the VLT LAG or VLT VLAN in a PVLAN..................................................................................................913
Proxy ARP Capability on VLT Peer Nodes.......................................................................................................................914
Working of Proxy ARP for VLT Peer Nodes.............................................................................................................. 914
VLT Nodes as Rendezvous Points for Multicast Resiliency............................................................................................. 915
Conguring VLAN-Stack over VLT................................................................................................................................. 916
61 VLT Proxy Gateway....................................................................................................920
Proxy Gateway in VLT Domains......................................................................................................................................920
Guidelines for Enabling the VLT Proxy Gateway........................................................................................................921
Enabling the VLT Proxy Gateway............................................................................................................................. 922
LLDP Organizational TLV for Proxy Gateway........................................................................................................... 922
Sample Conguration for a VLT Proxy Gateway.......................................................................................................923
Conguring an LLDP VLT Proxy Gateway...................................................................................................................... 924
62 Virtual Routing and Forwarding (VRF).......................................................................925
VRF Overview................................................................................................................................................................925
VRF Conguration Notes............................................................................................................................................... 926
DHCP.......................................................................................................................................................................928
VRF Conguration..........................................................................................................................................................928
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