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Re: MTU Issues

Your MTU may be smaller due to a router somewhere or a tunnel on
one of your links... Ethernet usually always has 1500 - unless
you change it manually yourself.

What sort of traffic is it?

Andrew (a different andrew)

On Mon, Jan 20, 2003 at 03:28:24PM +0100, Andrius Adomaitis wrote:
> > My problem is that the BSD server frags packets out of existance if they
> > are more than about 1400, as far as I can tell the MTU on the incoming and
> > outgoing interfaces are set to 1500, but I have never dealt with a BSD
> > system before, so I'm not too familiar with configurations etc on the
> > machine.
> well, I'am not a *bsd guru, so I cannot talk about these systems, but so far
> default MTU value for ethernet interfaces
> is 1500, and your bsd should have this setting on receiving interface -
> check out with `ifconfig`. Also try to check whether you have ping to bsd
> receiving interface with big icmp. Another thing - check out your
> ipfilter/kernel settings - maybe you are droping fragmented packets?...

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