[e2e] Re: [Tsvwg] Really End-to-end or CRC vs everything else?

Christopher Forsythe c_forsythe at hotmail.com
Mon Jun 11 16:00:27 PDT 2001

The information that is being stated seems to be all about either hardware,
or software checksumming. The pro of hardware checksumming, as stated in
earlier messages, is to speed up the total time of processes. The con (as
stated earlier) is that once placed into the hardware, it cannot be fixed
easily if broken.

Software checksumming seems to have the exact opposite effect. It doesn't
seem to affect hardware performance. But it can be fixed if the software
doesn't seem to be working properly.

The question is.... why couldn't the two be combined? If hardware can be
accelerated, then it would be an obvious plus (and thus marketing exploits.)
If the software version of the checksum could catch errors in the hardware
checksum without using much more of the processor cycles, then it would be
seen as a much better implimentation of checksumming in combination, than to
have just one checksum working from just one angle.

-Christopher Forsythe

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