Setup Guide

Table Of Contents
Interspersed VLANs.................................................................................................................................................... 887
VLT on Core Switches................................................................................................................................................888
Enhanced VLT............................................................................................................................................................. 888
Configure Virtual Link Trunking.......................................................................................................................................889
Important Points to Remember.................................................................................................................................889
Configuration Notes....................................................................................................................................................890
Primary and Secondary VLT Peers........................................................................................................................... 893
RSTP and VLT............................................................................................................................................................. 893
VLT Bandwidth Monitoring........................................................................................................................................894
VLT and Stacking........................................................................................................................................................ 894
VLT and IGMP Snooping............................................................................................................................................894
VLT IPv6.......................................................................................................................................................................894
VLT Port Delayed Restoration...................................................................................................................................894
PIM-Sparse Mode Support on VLT.......................................................................................................................... 895
VLT Routing ................................................................................................................................................................896
Non-VLT ARP Sync.................................................................................................................................................... 899
RSTP Configuration..........................................................................................................................................................899
Preventing Forwarding Loops in a VLT Domain......................................................................................................899
Sample RSTP configuration.......................................................................................................................................900
Configuring VLT.......................................................................................................................................................... 900
PVST+ Configuration....................................................................................................................................................... 908
Peer Routing Configuration Example............................................................................................................................. 909
Dell-1 Switch Configuration........................................................................................................................................ 910
Dell-2 Switch Configuration........................................................................................................................................914
R1 Configuration........................................................................................................................................................... 917
Access Switch A1 Configurations and Verification.................................................................................................. 918
eVLT Configuration Example............................................................................................................................................918
PIM-Sparse Mode Configuration Example..................................................................................................................... 921
Verifying a VLT Configuration.......................................................................................................................................... 921
Additional VLT Sample Configurations........................................................................................................................... 924
Troubleshooting VLT........................................................................................................................................................ 926
Reconfiguring Stacked Switches as VLT....................................................................................................................... 927
Specifying VLT Nodes in a PVLAN................................................................................................................................. 927
Configuring a VLT VLAN or LAG in a PVLAN............................................................................................................... 930
Creating a VLT LAG or a VLT VLAN.........................................................................................................................930
Associating the VLT LAG or VLT VLAN in a PVLAN...............................................................................................931
Proxy ARP Capability on VLT Peer Nodes.....................................................................................................................932
VLT Nodes as Rendezvous Points for Multicast Resiliency........................................................................................ 933
Configuring VLAN-Stack over VLT.................................................................................................................................933
IPv6 Peer Routing in VLT Domains Overview...............................................................................................................936
VXLAN on VLT.................................................................................................................................................................. 940
60 VLT Proxy Gateway.................................................................................................................943
Proxy Gateway in VLT Domains......................................................................................................................................943
LLDP VLT Proxy Gateway in a Square VLT Topology........................................................................................... 946
Configuring a Static VLT Proxy Gateway...................................................................................................................... 947
Configuring an LLDP VLT Proxy Gateway.....................................................................................................................947
VLT Proxy Gateway Sample Topology........................................................................................................................... 947
VLT Domain Configuration.........................................................................................................................................948
Dell-1 VLT Configuration.............................................................................................................................................948
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