[vortex-bug] transfer errors with 3C905C-TX-M

[Giuseppe Ciaccio]

On Mon, 4 Sep 2000, Bogdan Costescu wrote:

> 
> On Mon, 4 Sep 2000, Sergei Klioner wrote:
> 
> > corruption is always the same: 4 or 40 (octal) is added to the correct
> > value of the byte. No error messages! The probability of error is
> > between 10^(-7) and 10^(-8). The distribution of errorneous bytes and
> 
> How did you get this numbers ?
> 
> > their number is random and differs from transfer to transfer also for
> > the same file. This happens with all drivers available to me: 3Com's
> > 3c90x versions 1.0.0.c (standard for RH6.2) and 1.0.0.i (the latest
> > version from the 3Com's web site), and 3c59x driver V.0.99H. Any ideas?
> 
> If you're using RH 6.2's default kernel (2.2.14-5), the 3c59x driver does
> not support properly the 905C cards.

Sergei was talking about file corruption in FTP transfers!  This cannot
depend upon the device driver: TCP/IP has well known error detection
mechanisms, as it must provide error-free communication.
If the reported problem is real and reproducible, it would imply a flaw in
the protocol...

Giuseppe

Giuseppe Ciaccio               http://www.disi.unige.it/person/CiaccioG/
DISI - Universita' di Genova   via Dodecaneso 35   16146 Genova,   Italy
phone +39 10 353 6638          fax +39 010 3536699 ciaccio@disi.unige.it
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