Re: PILC: prioritization

From: Phil Karn (karn@qualcomm.com)
Date: Thu Jan 21 1999 - 19:08:34 EST


>We've looked at this concept from time to time over the years. One issue you
>have to deal with is that if the checksum fails, can you trust the fields in
>the packet you use to identify the sender of the packet. There is risk

I ask a much more basic question: how often do TCP checksums fail?

I rebooted my own Solaris workstation about 3 days ago. It talks a lot
over the exterior Internet. In that time, it has counted two TCP
errors and one UDP error, which are presumably checksum
failures. That's out of about 2 million incoming packets.

Phil



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