Rick Jones wrote:
One final word about window sizes. If you have a connection whose
bandwidth-delay-product needs an N byte buffer to fill, you actually
have to have an "N * 2" sized buffer available in order for fast
retransmit to work.
Is that as important in the presence of SACK?
With SACK you do need up to N * 2, but no more. With New Reno, you
potentially need ~ N * (number of losses) or it will time out... yuck.
SACK is a good thing. :)
-John
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