Don Stokes wrote:
Checksums don't make a protocol reliable.
No, but they do play an important role in some reliable protocols.
layering one reliable protocol over another makes the windowing/retransmission algorithms conflict in a worst-of-both-worlds kind of way.
This can't be true. While it may hold in some instances, as a general statement it can't be right. TCP/IP behaves poorly in situations where bit error rates are high. If the overall latency is also high, but the high bit error rate link has low latency then the effect of placing a reliable protocol underneath TCP/IP (especially one that does forward error correction) on the link will, without doubt, improve real world performance. -Craig --------- To unsubscribe from nznog, send email to majordomo(a)list.waikato.ac.nz where the body of your message reads: unsubscribe nznog