Re: TCP and Loss (inherently lossy nets)


CERF@A.ISI.EDU
10 Oct 1987 11:28-EDT


Mike,

On a lossy link, it is better to retransmit on the link to cinfine the
amount of retransmission to the link rather than pay the price throughout
the network. One uses end/end retransmission to recover from more cataclysmic
failures (loss of underlying X.25 VC, network partitioning, crash of a
packet switch, etc.).l

On really noisy links, it is better to use forward error correction
because checksums will fail almost every time and retransmission then
is not a good recovery tool.

Vint



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