Combine VPN bandwith over two or more WAN connections? Load balancing?

Posted by mistrfu on Server Fault See other posts from Server Fault or by mistrfu
Published on 2012-10-27T00:47:15Z Indexed on 2012/10/27 5:04 UTC
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Imagine you only have DSL with 5mbps Down and 2mbps Up.

Is it possible to have 10 of these for example and combine them in a way that would increase the upstrean bandwidth to one server?

In my head it works like this:

  • intranet with one gateway/router
  • router connected to multi wan load ballancer
  • on each ballancer wan port router with vpn clinet set up, tunneling to a server
  • ?some? software on the server in cloud joining all these connection into one interface again

Sketch of multiwan connection

I would need this mostly for big uploads to a server, downlink to the office is not that important at all.
Does it even make sense? I drew an image to clarify.

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