Users Guide
LLDP Organizational TLV for Proxy Gateway........................................................................................................... 884
Conguring an LLDP VLT Proxy Gateway...................................................................................................................... 886
Conguring a Static VLT Proxy Gateway........................................................................................................................886
62 Virtual Link Trunking (VLT)........................................................................................888
Overview....................................................................................................................................................................... 888
VLT on Core Switches..............................................................................................................................................889
Enhanced VLT..........................................................................................................................................................889
VLT Terminology............................................................................................................................................................ 890
Congure Virtual Link Trunking...................................................................................................................................... 890
Important Points to Remember................................................................................................................................890
Conguration Notes.................................................................................................................................................892
Primary and Secondary VLT Peers...........................................................................................................................895
RSTP and VLT......................................................................................................................................................... 895
VLT Bandwidth Monitoring...................................................................................................................................... 895
VLT and Stacking.....................................................................................................................................................895
VLT and IGMP Snooping..........................................................................................................................................896
VLT IPv6.................................................................................................................................................................. 896
VLT Port Delayed Restoration.................................................................................................................................. 896
PIM-Sparse Mode Support on VLT.......................................................................................................................... 896
VLT Routing ............................................................................................................................................................ 898
Non-VLT ARP Sync..................................................................................................................................................900
RSTP Conguration....................................................................................................................................................... 900
Preventing Forwarding Loops in a VLT Domain........................................................................................................ 900
Sample RSTP Conguration.....................................................................................................................................900
Conguring VLT........................................................................................................................................................901
PVST+ Conguration.......................................................................................................................................................911
Sample PVST+ Conguration.................................................................................................................................... 911
eVLT Conguration Example...........................................................................................................................................912
eVLT Conguration Step Examples...........................................................................................................................912
PIM-Sparse Mode Conguration Example...................................................................................................................... 914
Verifying a VLT Conguration..........................................................................................................................................914
Additional VLT Sample Congurations.............................................................................................................................918
Troubleshooting VLT....................................................................................................................................................... 919
Reconguring Stacked Switches as VLT......................................................................................................................... 921
Specifying VLT Nodes in a PVLAN..................................................................................................................................921
Association of VLTi as a Member of a PVLAN..........................................................................................................922
MAC Synchronization for VLT Nodes in a PVLAN....................................................................................................922
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.................................................................................. 923
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN.........................................923
Conguring a VLT VLAN or LAG in a PVLAN................................................................................................................. 924
Creating a VLT LAG or a VLT VLAN......................................................................................................................... 924
Associating the VLT LAG or VLT VLAN in a PVLAN.................................................................................................925
Proxy ARP Capability on VLT Peer Nodes......................................................................................................................926
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