[e2e] 10% packet loss stops TCP flow

Noel Chiappa jnc at mercury.lcs.mit.edu
Fri Feb 25 12:40:22 PST 2005


    > From: Roy Xu <kx2 at njit.edu>

    > it seems to be a common understanding that if a TCP flow experiences
    > 10% or more packet loss, the flow stops (i.e., attains 0 or meaningless
    > throughput)
    > ...
    > my questions is what is the theoretical or analytical explanation for
    > this observation?

Exercise for the reader: If a TCP connection will time out and abort the
connection if it receives no ACK to T retransmissions of a segment X, given
that it has N total segments to transmit, derive the equation f which gives
Pc = f(Pp, T, N), where Pc is the probability of the successful completion of
the tranmssion, and Pp is the probability of the loss of any individual
packet.

	Noel


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