high latency
Ted Mittelstaedt
tedm at toybox.placo.com
Mon Feb 21 11:49:04 GMT 2005
> -----Original Message-----
> From: owner-freebsd-questions at freebsd.org
> [mailto:owner-freebsd-questions at freebsd.org]On Behalf Of Peter Risdon
> Sent: Monday, February 21, 2005 3:31 AM
> To: Chris Knipe
> Cc: freebsd-questions at freebsd.org
> Subject: Re: high latency
>
>
> On Mon, 2005-02-21 at 11:52 +0200, Chris Knipe wrote:
> > Hi,
> >
> > I have 4 FreeBSD Servers connected to a Cisco 2950 all doing
> inter-VLAN
> > routing. Everything is working right, but one server is
> getting absurdly
> > high latency through the VLANs.
>
> [...]
>
> > Now, the problematic box is running a RealTek card,
>
> Ugh. You don't say which one, but I just cured a prob with nfs by
> replacing a brand new Realtek card with an old digital NIC that was
> lying around. Not for the first time, I vow never to use Realtek cards
> again.
>
Realteks seem to have a problem detecting and setting up for the correct
speed/duplex. (The 10/100 versions, that is) If you leave them in AUTO
negotiation mode they only work right if connected to a 10/100 switch.
Otherwise if you have problems they work fine if you hard code the
speed/duplex in the /etc/rc.conf file.
Ted
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