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Date: Sat, 14 Nov 1998 08:46:47 +1100
From: Eddie Irvine <eirvine@tpgi.com.au>
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To: Dave Bodenstab <imdave@mcs.net>
CC: questions@FreeBSD.ORG
Subject: Re: Are collisions normal on a local net
References: <199811130354.VAA11666@base486.home.org>
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Hi Dave,

Dave Bodenstab wrote:
> 
> Dear Network Wizards,
> 
> I've got 3 PC's networked:
> 
>    CPU          OS                      Board                           Driver
> ----------      ---------------------   --------------------------      -----
>    486          FreeBSD 2.0.5           ne2000 clone                     ed
>   586/mmx       FreeBSD 2.2.5           ne2000 clone                     ed
> 2 x 686/pro     FreeBSD 3.0 (8/4 snap)  Intel Etherexpress Pro/100B      fxp
>                                         (integrated on a PR440FX MB)
> 
> When I do a ``netstat -i'' on either of the machines with the ne2000
> cards, I see no collisions, but I do see a few IERRS, ie:
> 
>   Name  Mtu   Network     Address            Ipkts Ierrs    Opkts Oerrs  Coll
>   ed0   1500  <Link>00.40.05.52.8d.ad      8352016    15  5678032     0     0
>   ed0   1500  10          base486          8352016    15  5678032     0     0
> 
> However, from the 3.0 box, I see:
> 
>   Name  Mtu   Network       Address            Ipkts Ierrs    Opkts Oerrs  Coll
>   fxp0  1500  <Link>      00.a0.c9.49.6f.9e   199825     0   363568     0 30635
>   fxp0  1500  10/24         base686           199825     0   363568     0 30635
> 

Seems a tad excessive for a small network.

> ed0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
                                       ^^^^^^^

Use the MS-DOS setup disk that came with the ed0 card to make certain
it really is in SIMPLEX mode and not DUPLEX.

This seems to be a problem with the ISA NE2000 cards (not just for
FreeBSD but
W95 as well). PCI NE2000 cards seem to be OK.

Eddie.

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