Subject: Re: Are framing errors and collision errors normal?
To: Dave Huang <email@example.com>
From: Jason Thorpe <firstname.lastname@example.org>
Date: 12/29/1997 15:25:18
On Fri, 12 Dec 1997 21:15:58 -0600 (CST)
Dave Huang <email@example.com> wrote:
> Are framing errors, FCS errors, and collision errors fairly normal on a
> busy ethernet? I've had some reports of those from people who are using my
> AMD MACE driver on a busy network. I notice that the AMD LANCE doesn't
> print collision errors at all (in am7990_intr(), the check for LE_C0_CERR
> is in an #if 0 block); the framing error (LE_R1_FRAM) and crc mismatch
> (LE_R1_CRC) messages are only printed #ifdef LEDEBUG (see am7990_rint).
The fact that they are somewhat normal is a good reason to not print them
out when they happen.
Framing errors can happen when you have too many repeaters on the
network, for example.
Jason R. Thorpe firstname.lastname@example.org
NASA Ames Research Center Home: +1 408 866 1912
NAS: M/S 258-6 Work: +1 650 604 0935
Moffett Field, CA 94035 Pager: +1 415 428 6939