[e2e] TCP flow count estimation

[David P. Reed]

Jon - A cute estimator, but besides doubling the header overhead and 
routing overhead network wide ...

  Has the IP layer's function been redefined so that it guarantees that all 
datagrams must be sent along the same physical path and through 
order-preserving queues?

We know that IP does not have order preserving queues in general - fast 
path processing and service-types violate order.  We also know that in some 
cases, path stability is violated even in the short term.


At 06:24 AM 11/29/2001 +0000, Jon Crowcroft wrote:


>here's a daft idea for xmas:
>
>if tcp is sending instead of MSS, alternate packets of size
>MSS-1, and size 1
>(well payload size)
>and every packet elicits an ack,
>it can use path char style estimation of the bottleneck line rate
>
>it can use equation basedestimation of the bottlenck avaialble
>capacity
>
>between these two, it can deriv an estimate of the number of other
>tcps (wel module notknowing their RTTs)
>
>this might be useful for somethig....
>
>j.
>oh, if every other packet elicits an ack, then you need to intersperse
>the small/large alternation over  3 packets - simple tho
>
>think of it like running 2 seperate tcp flows tho, one with MSS 1
>bute, one with mtu-41 and estimators for both