North American Network Operators Group|
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Re: Best utilizing fat long pipes and large file transfer
At 06:37 PM 6/12/2008, you wrote:
I'm looking for input on the best practices for sending large files over a long fat pipe between facilities (gigabit private circuit, ~20ms RTT).
In our experience, you can't get to line speed with over 20-30ms of latency using TCP regardless of how much you tweak it. We transfer files across the US with 60-70ms at line speeds with UDP based file transfer programs. There are a number of open source projects out there designed for this purpose.
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