Date: Thu, 01 Sep 2005 12:52:09 -0500 From: Greg Barniskis <nalists@scls.lib.wi.us> To: Bryan Albright <bryana@darth-vader.org> Cc: freebsd-questions@freebsd.org Subject: Re: How can I stop "discard oversize frame" errors? Message-ID: <43173FC9.5050707@scls.lib.wi.us> In-Reply-To: <20050901153458.GA39443@darth-vader.org> References: <20050901124405.GA6432@darth-vader.org> <43171963.80502@mac.com> <20050901153458.GA39443@darth-vader.org>
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Bryan Albright wrote: > On 09/01/05 at 11:08AM, Chuck Swiger wrote: > >>Bryan Albright wrote: >>[ ... ] >> >>>fxp0: discard oversize frame (ether type 800 flags 3 len 1573 > max 1514) >>>fxp0: discard oversize frame (ether type 800 flags 3 len 1533 > max 1514) >>>fxp0: discard oversize frame (ether type 5555 flags 3 len 1520 > max 1514) >>>fxp0: discard oversize frame (ether type 800 flags 3 len 1564 > max 1514) >>> >>>I have 2 NICs in my machine, both intel etherexpress pro: >> >>Try setting an mtu of 1450 or so. You can add that to the ifconfig lines >>in /etc/rc.conf, or run "ifconfig fxp0 mtu 1400" directly. >> > > > I've tried to do that, but the fxp cards do not seem to allow > modifying the mtu settings. It does have the capability of modifying > the vlanmtu, but I don't know if this will affect/help this issue. > Isn't this message being generated when the router sends a packet that exceeds fxp0's MTU, so... the solution is to tune the router's MTU, rather than fxp0? I am admittedly just guessing, but intuitively that seems right. -- Greg Barniskis, Computer Systems Integrator South Central Library System (SCLS) Library Interchange Network (LINK) <gregb at scls.lib.wi.us>, (608) 266-6348
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