White Papers

Table Of Contents
Important Points to Remember............................................................................................................................. 898
Configuration Notes................................................................................................................................................. 899
Primary and Secondary VLT Peers.......................................................................................................................902
RSTP and VLT........................................................................................................................................................... 902
VLT Bandwidth Monitoring.....................................................................................................................................903
VLT and Stacking......................................................................................................................................................903
VLT and IGMP Snooping.........................................................................................................................................903
VLT IPv6......................................................................................................................................................................903
VLT Port Delayed Restoration............................................................................................................................... 904
PIM-Sparse Mode Support on VLT...................................................................................................................... 904
VLT Routing .............................................................................................................................................................. 906
Non-VLT ARP Sync..................................................................................................................................................909
RSTP Configuration....................................................................................................................................................... 909
Preventing Forwarding Loops in a VLT Domain................................................................................................ 909
Sample RSTP configuration.................................................................................................................................... 910
Configuring VLT......................................................................................................................................................... 910
PVST+ Configuration......................................................................................................................................................919
Peer Routing Configuration Example.........................................................................................................................920
Dell-1 Switch Configuration.................................................................................................................................... 920
Dell-2 Switch Configuration................................................................................................................................... 924
R1 Configuration........................................................................................................................................................ 927
Access Switch A1 Configurations and Verification........................................................................................... 928
eVLT Configuration Example........................................................................................................................................929
PIM-Sparse Mode Configuration Example................................................................................................................ 931
Verifying a VLT Configuration...................................................................................................................................... 931
Additional VLT Sample Configurations...................................................................................................................... 935
Troubleshooting VLT......................................................................................................................................................936
Reconfiguring Stacked Switches as VLT.................................................................................................................. 937
Specifying VLT Nodes in a PVLAN.............................................................................................................................938
Configuring a VLT VLAN or LAG in a PVLAN........................................................................................................... 941
Creating a VLT LAG or a VLT VLAN..................................................................................................................... 941
Associating the VLT LAG or VLT VLAN in a PVLAN........................................................................................942
Proxy ARP Capability on VLT Peer Nodes................................................................................................................943
VLT Nodes as Rendezvous Points for Multicast Resiliency................................................................................. 944
Configuring VLAN-Stack over VLT............................................................................................................................ 944
IPv6 Peer Routing in VLT Domains Overview..........................................................................................................947
Chapter 59: VLT Proxy Gateway................................................................................................ 952
Proxy Gateway in VLT Domains.................................................................................................................................. 952
LLDP VLT Proxy Gateway in a Square VLT Topology..................................................................................... 955
Configuring a Static VLT Proxy Gateway.................................................................................................................956
Configuring an LLDP VLT Proxy Gateway................................................................................................................956
VLT Proxy Gateway Sample Topology.......................................................................................................................957
VLT Domain Configuration......................................................................................................................................957
Dell-1 VLT Configuration......................................................................................................................................... 957
Dell-2 VLT Configuration.........................................................................................................................................958
Dell-3 VLT Configuration........................................................................................................................................ 959
Dell-4 VLT Configuration........................................................................................................................................ 960
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