Users Guide

VLT on Core Switches............................................................................................................................................894
Enhanced VLT......................................................................................................................................................... 895
Configure Virtual Link Trunking................................................................................................................................... 896
Important Points to Remember.............................................................................................................................896
Configuration Notes................................................................................................................................................ 897
Primary and Secondary VLT Peers....................................................................................................................... 900
RSTP and VLT......................................................................................................................................................... 900
VLT Bandwidth Monitoring.....................................................................................................................................901
VLT and Stacking.....................................................................................................................................................901
VLT and IGMP Snooping.........................................................................................................................................901
VLT IPv6....................................................................................................................................................................901
VLT Port Delayed Restoration...............................................................................................................................902
PIM-Sparse Mode Support on VLT...................................................................................................................... 902
VLT Routing ............................................................................................................................................................ 904
Non-VLT ARP Sync.................................................................................................................................................907
RSTP Configuration...................................................................................................................................................... 908
Preventing Forwarding Loops in a VLT Domain..................................................................................................908
Sample RSTP Configuration.................................................................................................................................. 908
Configuring VLT.......................................................................................................................................................909
PVST+ Configuration.....................................................................................................................................................919
Sample PVST+ Configuration.................................................................................................................................919
Peer Routing Configuration Example..........................................................................................................................920
Dell-1 Switch Configuration.....................................................................................................................................921
Dell-2 Switch Configuration...................................................................................................................................925
R1 Configuration...................................................................................................................................................... 928
Access Switch A1 Configurations and Verification..............................................................................................929
eVLT Configuration Example....................................................................................................................................... 930
eVLT Configuration Step Examples...................................................................................................................... 930
PIM-Sparse Mode Configuration Example.................................................................................................................932
Verifying a VLT Configuration......................................................................................................................................933
Additional VLT Sample Configurations....................................................................................................................... 936
Troubleshooting VLT.....................................................................................................................................................938
Reconfiguring Stacked Switches as VLT................................................................................................................... 939
Specifying VLT Nodes in a PVLAN............................................................................................................................. 939
Association of VLTi as a Member of a PVLAN....................................................................................................940
MAC Synchronization for VLT Nodes in a PVLAN............................................................................................. 940
PVLAN Operations When One VLT Peer is Down...............................................................................................941
PVLAN Operations When a VLT Peer is Restarted.............................................................................................941
Interoperation of VLT Nodes in a PVLAN with ARP Requests.......................................................................... 941
Scenarios for VLAN Membership and MAC Synchronization With VLT Nodes in PVLAN............................ 941
Configuring a VLT VLAN or LAG in a PVLAN............................................................................................................943
Creating a VLT LAG or a VLT VLAN.....................................................................................................................943
Associating the VLT LAG or VLT VLAN in a PVLAN.......................................................................................... 944
Proxy ARP Capability on VLT Peer Nodes.................................................................................................................945
Working of Proxy ARP for VLT Peer Nodes........................................................................................................945
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