Re: TCP retransmission efficiency


Mike Karels (karels@monet.berkeley.edu)
Sun, 27 Jul 86 19:59:17 PDT


Phil:

I'm not sure you're up to date on TCP either. The Nagle algorithm allows
only one *small* packet in flight (one of less than the maximum
segment size). Essentially all applications other than telnet/remote
terminal use more than one segment per round-trip interval. Very few
applications are satisfied with "stop and wait" mode, nor do they refrain
from sending additional data once a maximum segment sized packet has been
sent.

I don't want to think about ACKing ACKs; new data segments are sufficient
acknowledgement, and retransmitted data segments are good enough NAKs.

                Mike



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