Re: dc still reporting collisions

On Sat, Nov 15, 2003 at 03:09:27PM -0800, Doug White wrote:
> On Sat, 15 Nov 2003, Jos Backus wrote:
> 
> > On Sat, Nov 15, 2003 at 05:23:08PM +1000, Andy Farkas wrote:
> > > Jos Backus wrote:
> > >
> > > > Fwiw, I'm seeing the same with tx(4):
> > >
> > > Looks like a different problem.
> >
> > Probably. I was commenting on the (relatively) high collision count I'm
> > seeing. This is a hub (DSL router) with 2 PC's on it. I have never seen this
> > many collisions happening before. Plus I can no longer transfer files from the
> > Windows system to the FreeBSD system (even using FTP), something that worked
> > flawlessly at least until October 17th. So something is broken. You think it
> > could be hardware?
> 
> If its a real hub, hubs aren't full duplex.
 
Yeah, I know (believe it or not, but my job description says "Network
Engineer" :-).

> If its a switch, the switch and PC might not have negoatiated full duplex
> properly. Try unplug/replug the cable, or switch to autoselect.
 
Thanks for the advice, but this setup has been working unchanged for years
now. All that's really changed is FreeBSD on this machine. It could be broken
hardware though. I'm going to try booting 4.9-RELEASE and see if I can get FTP
to work (5.1-RELEASE just hangs during root mount).

Cheers,
Jos

> > Thanks,
> > Jos
> >
> > > > lizzy:~% ifconfig tx0
> > > > tx0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
> > > >         inet 10.0.0.2 netmask 0xffffff00 broadcast 10.0.0.255
> > > >         inet 10.0.0.10 netmask 0xffffffff broadcast 10.0.0.10
> > > >         ether 00:e0:29:09:e4:1a
> > > >         media: Ethernet autoselect (10baseT/UTP)
> > > >         status: active
> > > > lizzy:~% netstat -i
> > > > Name    Mtu Network       Address              Ipkts Ierrs    Opkts Oerrs  Coll
> > > > tx0    1500 <Link#1>      00:e0:29:09:e4:1a   154423     1   118093     0   253
> > > > tx0    1500 10/24         lizzy               159162     -   122841     -     -
> > > > tx0    1500 10.0.0.10/32  lizzy-proxy             28     -       28     -     -
> > > > lo0   16384 <Link#2>                            5347     0     5347     0     0
> > > > lo0   16384 your-net      localhost              442     -      442     -     -
> > > > lizzy:~%
> > >
> > > The dc(4) driver currently has an almost 1:1 ratio of packets:collisions.
> > > Your tx0 is quite low.
> > >
> > > Seishi Hiragushi <s-hrgsh_at_lapis.plala.or.jp> reported this 1.5 months ago:
> > >
> > > Message-Id: <20030902071657.1e94e2b4.s-hrgsh_at_lapis.plala.or.jp>
> > >
> > >
> > > --
> > >
> > >  :{ andyf_at_speednet.com.au
> > >
> > >         Andy Farkas
> > >     System Administrator
> > >    Speednet Communications
> > >  http://www.speednet.com.au/
> > >
> > >
> > >
> > >
> > > 
> > >
> > >
> >
> >
> 
> -- 
> Doug White                    |  FreeBSD: The Power to Serve
> dwhite_at_gumbysoft.com          |  www.FreeBSD.org
> 
> 

-- 
Jos Backus                       _/  _/_/_/      Sunnyvale, CA
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jos at catnook.com        _/_/   _/_/_/          require 'std/disclaimer'