Bandwidth aggregation

I have two internet connections from two different ISPs on my machine. Both are through LAN cards - both cards are connected to different networks. Both connections are 256kbps each.

When I run my applications, they are able to get max 256 kbps speed while I have a total of 512kbps available.

Is there a way to aggregate the bandwidth of both the connections without making any hardware investments?

It is a windows XP SP2 machine. Changing IPs is not an option since one ISP uses IP+MAC to authenticate.

Cheers!
sunnycoder
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sunnycoderAsked:
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sunnycoderConnect With a Mentor Author Commented:
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Robert Sutton JrSenior Network ManagerCommented:
Need more info, but by the sounds of it you are asking if you can achieve a throughput of 512 since your service provider is feeding you 2 separate 256's?.... If thats your question, then the answer in probably not.... You can attempt to tweak your RWIN settings but in reality it is what it is.....256
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sunnycoderAuthor Commented:
Yep .. that is what I am essentially asking ...
2 connections from 2 different ISPs ... 256 kbps each ... looking for a way to aggregate both to get an overall 512 kbps ...

I was hoping there would be a load balancer or some software that could provide a single pipe view to applications.
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trinak96Commented:
Not without hardware investment i'm afraid.
Go to your ISP's and ask if they provide a "multilink PPP bonding" solution for multiple connections.
There are ISP's in the UK that do this and a free linux router from http://www.upstreaminter.net/bondedcd.shtml will do the rest, if you have a spare machine to run it on.
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sunnycoderAuthor Commented:
If you manage your routing table well, you can easily get ~450 kbps.
The method listed at the links above actually works very well ...

Thanks for your efforts, I shall be seeking a PAQ/Refund for this question

Cheers!
sunnycoder
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hamisherskineCommented:
If you want to aggregate bandwidth, you want a multi-homing router. Look at www.edimax.com
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