Strange network issue in freebsd 8

[Li, Qing]

Just an update on this issue and to letting you know your
report is not ignored.

I have been working with Sherin George offline and we have
Been pulling information off Sherin's server box.

The box becomes unresponsive after about 4 days. The routing
table is fine is properly accessed. The ARP table is properly accessed. 
Through packet capture, the packets seem to flow into the driver but
appear 
to be stuck somewhere after the driver handoff. The device stats do not
show 
any link related errors. The device is "em".

Initially I was suspecting the flow-table module, but after disabling
the flow-table lookup and various experiments, the problem points to L2
(after ether_output).

According to Sherin, the box will regain network connectivity after
some time.

At this point I am thinking about creating a special debug build and 
run it in Sherin's environment.

-- Qing



> -----Original Message-----
> From: owner-freebsd-net at freebsd.org [mailto:owner-freebsd-
> net at freebsd.org] On Behalf Of Kenneth Hilmersson
> Sent: Friday, January 29, 2010 1:46 PM
> To: freebsd-net at freebsd.org
> Subject: Strange network issue in freebsd 8
> 
> > The servers loses network connection once in a few days. I logged
> into
> > console and verified that network is up. I even restarted network
> service
> > using following command.
> >
> > /etc/rc.d/netif restart
> >
> > Still, it didn't fix.
> >
> > I checked /var/log/messages, but I am not getting any clue.
> 
> 
> I see exactly the same thing. My network dies after a couple of days
in
> the same manner.
> 
> My friend have problems with different network cards in 8.0:
> em, msk, age locks up and with sis the network performance drops to
> 0.1kbps after awhile.
> 
> 
> BR
> Kenneth
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