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Re: node types etc.



TCP checksums have a number of known problems.

Make sure you understand these problems before blindly choosing.

In short, if IP were being designed today, they wouldn't choose the
current algorithm.
				- Jim

> Sender: owner-jffs-dev@xxxxxxx.com
> From: Philipp Rumpf <prumpf@xxxxxxx.uk>
> Date: Tue, 16 Jan 2001 08:57:13 +0000
> To: Nicolas Pitre <nico@xxxxxxx.org>
> Cc: David Woodhouse <dwmw2@xxxxxxx.com
> Subject: Re: node types etc.
> -----
> On Mon, Jan 15, 2001 at 02:35:37PM -0500, Nicolas Pitre wrote:
> > While at it, what about replacing checksums with a CRC?  Simple checksums
> > are proven to be bad at detecting sticky bits or such due to the high
> > correlation between bits of the same order... while a CRC offers way better
> > error checking.
> 
> TCP checksums avoid that [the problems, not the error checking], reuse code,
> and are heavily optimized on most architectures.  I'd vote for them.
> 
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--
Jim Gettys
Technology and Corporate Development
Compaq Computer Corporation
jg@xxxxxxx.com


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