Users Guide

Enhanced VLT................................................................................................................................................... 861
VLT Terminology.................................................................................................................................................... 861
Configure Virtual Link Trunking.......................................................................................................................... 862
Important Points to Remember.................................................................................................................... 862
Configuration Notes........................................................................................................................................863
Primary and Secondary VLT Peers............................................................................................................... 866
RSTP and VLT....................................................................................................................................................866
VLT Bandwidth Monitoring............................................................................................................................ 866
VLT and Stacking.............................................................................................................................................. 867
VLT and IGMP Snooping.................................................................................................................................867
VLT IPv6..............................................................................................................................................................867
VLT Port Delayed Restoration........................................................................................................................867
PIM-Sparse Mode Support on VLT...............................................................................................................868
VLT Routing ......................................................................................................................................................869
Non-VLT ARP Sync...........................................................................................................................................871
RSTP Configuration................................................................................................................................................871
Preventing Forwarding Loops in a VLT Domain........................................................................................ 872
Sample RSTP Configuration...........................................................................................................................872
Configuring VLT................................................................................................................................................873
PVST+ Configuration............................................................................................................................................ 883
Sample PVST+ Configuration........................................................................................................................883
eVLT Configuration Example.............................................................................................................................. 884
eVLT Configuration Step Examples..............................................................................................................885
PIM-Sparse Mode Configuration Example....................................................................................................... 887
Verifying a VLT Configuration............................................................................................................................. 887
Additional VLT Sample Configurations............................................................................................................. 890
Troubleshooting VLT.............................................................................................................................................892
Reconfiguring Stacked Switches as VLT........................................................................................................... 893
Specifying VLT Nodes in a PVLAN......................................................................................................................894
Association of VLTi as a Member of a PVLAN............................................................................................894
MAC Synchronization for VLT Nodes in a PVLAN.....................................................................................895
PVLAN Operations When One VLT Peer is Down.....................................................................................895
PVLAN Operations When a VLT Peer is Restarted.................................................................................... 895
Interoperation of VLT Nodes in a PVLAN with ARP Requests................................................................ 896
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN................ 896
Configuring a VLT VLAN or LAG in a PVLAN....................................................................................................897
Creating a VLT LAG or a VLT VLAN.............................................................................................................. 897
Associating the VLT LAG or VLT VLAN in a PVLAN...................................................................................898
Proxy ARP Capability on VLT Peer Nodes........................................................................................................ 899
Working of Proxy ARP for VLT Peer Nodes................................................................................................900
VLT Nodes as Rendezvous Points for Multicast Resiliency.......................................................................... 900
Configuring VLAN-Stack over VLT..................................................................................................................... 901
IPv6 Peer Routing in VLT Domains Overview..................................................................................................904
IPv6 Peer Routing............................................................................................................................................ 904
Synchronization of IPv6 ND Entries in a VLT Domain..............................................................................905
Synchronization of IPv6 ND Entries in a Non-VLT Domain....................................................................905
Tunneling IPv6 ND in a VLT Domain........................................................................................................... 905
9.10(0.1)
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