[e2e] Question on assumption of congestion control algorithm

Sally Floyd floyd at aciri.org
Mon May 7 08:17:05 PDT 2001

>tweaking TCP algorithms
>to recognise and cope with reordering (e.g. by selectively raising
>the dupack threshold) is an area I haven't seen much written about

Yep.  Hopefully there will be more shortly.
There is some preliminary work in this direction in the DSACK standard:

An Extension to the Selective Acknowledgement (SACK) Option for TCP. 
Floyd, S., Mahdavi, J., Mathis, M., and Podolsky, M.. 
RFC 2883, Proposed Standard, July 2000. 

And some discussion of possible paths for making TCP robust to 
reordering in the following:

A Report on Some Recent Developments in TCP Congestion Control,
Floyd, S. IEEE Communications Magazine, April 2001. 

- Sally

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