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Extending DC LAN over Transparent ISP circuit

Hello all,

See the attached design.

My ISP says that it deliver me 2 cables in each point completelly transparent.

They sold me 1 Gbps circuit plus a 1Gbps failover circuit in the cloud.

I need to extend the LAN over the cloud.

In each DC i have 2 3750G in stackwize which will connect each other to 2 3750v2 from the ISP (not represented in design).

I was thinking to configure EtherChannel between the DCs, but i realize that maybe will not work cause one of the links will be on failover mode.

Pure trunking between DCs, i guess it wont work much fine for the same reason.

The reason i think it wont work, is because of not getting 2 physical links between both ends.(Somewhere in the middle, it will be only one physical link)

Any ideas for this type of configuration?

Should i ask the ISP to terminate the Etherchannel on the ISP equipment of each site ?

Best Regards,

Bruno Petrónio

  • LAN Switching and Routing
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