Users Guide
Enhanced VLT..........................................................................................................................................................888
VLT Terminology.............................................................................................................................................................889
Congure Virtual Link Trunking.......................................................................................................................................889
Important Points to Remember................................................................................................................................889
Conguration Notes..................................................................................................................................................891
Primary and Secondary VLT Peers...........................................................................................................................894
RSTP and VLT..........................................................................................................................................................894
VLT Bandwidth Monitoring.......................................................................................................................................894
VLT and Stacking..................................................................................................................................................... 894
VLT and IGMP Snooping..........................................................................................................................................895
VLT IPv6.................................................................................................................................................................. 895
VLT Port Delayed Restoration.................................................................................................................................. 895
PIM-Sparse Mode Support on VLT.......................................................................................................................... 895
VLT Routing ............................................................................................................................................................ 897
Non-VLT ARP Sync..................................................................................................................................................899
RSTP Conguration....................................................................................................................................................... 899
Preventing Forwarding Loops in a VLT Domain........................................................................................................ 899
Sample RSTP Conguration.....................................................................................................................................899
Conguring VLT.......................................................................................................................................................900
PVST+ Conguration...................................................................................................................................................... 910
Sample PVST+ Conguration....................................................................................................................................910
eVLT Conguration Example............................................................................................................................................911
eVLT Conguration Step Examples............................................................................................................................911
PIM-Sparse Mode Conguration Example...................................................................................................................... 913
Verifying a VLT Conguration..........................................................................................................................................914
Additional VLT Sample Congurations.............................................................................................................................917
Troubleshooting VLT....................................................................................................................................................... 919
Reconguring Stacked Switches as VLT........................................................................................................................ 920
Specifying VLT Nodes in a PVLAN.................................................................................................................................920
Association of VLTi as a Member of a PVLAN...........................................................................................................921
MAC Synchronization for VLT Nodes in a PVLAN.....................................................................................................921
PVLAN Operations When One VLT Peer is Down.................................................................................................... 922
PVLAN Operations When a VLT Peer is Restarted...................................................................................................922
Interoperation of VLT Nodes in a PVLAN with ARP Requests..................................................................................922
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN.........................................922
Conguring a VLT VLAN or LAG in a PVLAN................................................................................................................. 923
Creating a VLT LAG or a VLT VLAN......................................................................................................................... 924
Associating the VLT LAG or VLT VLAN in a PVLAN................................................................................................. 924
Proxy ARP Capability on VLT Peer Nodes......................................................................................................................925
Working of Proxy ARP for VLT Peer Nodes..............................................................................................................926
VLT Nodes as Rendezvous Points for Multicast Resiliency.............................................................................................927
Conguring VLAN-Stack over VLT.................................................................................................................................927
62 VLT Proxy Gateway....................................................................................................931
Proxy Gateway in VLT Domains.......................................................................................................................................931
Guidelines for Enabling the VLT Proxy Gateway....................................................................................................... 932
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