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 From:  "sHuKKo Kazandibi" <shukko at gmail dot com>
 To:  "Chris Buechler" <cbuechler at gmail dot com>
 Cc:  m0n0wall at lists dot m0n0 dot ch
 Subject:  Re: [m0n0wall] m0n0wall in colocation environment serious problems.
 Date:  Tue, 23 May 2006 22:45:15 +0300
Hi

I set MTU to 1400 on one of my webservers and left the other one untouched.
But the problem continues just like before.
Randomly I can download or not.

I checked my m0n0wall logs and see below entries:

  May 23 21:34:25 /kernel: xl0: transmission error: 90 May 23 21:34:25 /kernel:
xl0: tx underrun, increasing tx start threshold to 120 bytes May 23
21:34:26 /kernel:
xl0: transmission error: 90 May 23 21:34:26 /kernel: xl0: tx underrun,
increasing tx start threshold to 180 bytes May 23 21:38:06 /kernel: xl0:
transmission error: 90 May 23 21:38:06 /kernel: xl0: tx underrun, increasing
tx start threshold to 240 bytes May 23 21:38:27 /kernel: xl0: transmission
error: 90 May 23 21:38:27 /kernel: xl0: tx underrun, increasing tx start
threshold to 300 bytes May 23 22:06:04 /kernel: arp: 212.170.24.2 is on my0
but got reply from 00:13:d4:a7:a4:6e on xl0 May 23 22:11:04 /kernel: arp:
212.170.24.254 is on my0 but got reply from 00:13:49:17:ab:de on xl0
  May 24 01:22:56 /kernel: arp: 212.170.24.2 is on my0 but got reply from
00:13:d4:a7:a4:6e on xl0 May 24 01:22:58 last message repeated 2 times

I wonder if there is something wrong with my arp configuration? What do you
think ?



2006/5/23, Chris Buechler <cbuechler at gmail dot com>:
>
> On 5/23/06, sHuKKo Kazandibi <shukko at gmail dot com> wrote:
> >
> > The only thing left is my m0n0wall configuration.
> > Did I passed anything on my configuration?
>
> all sounds fine.  You mentioned VLAN, if you're using 802.1Q VLAN's
> you can run into MTU problems sporadically.  Try setting the MTU on
> your servers to 1400 and see if the problems go away.
>
> -Chris
>