FTP difficulties 4.8R

matthew matthew at netway.com
Sun Feb 15 23:36:09 PST 2004

On Sun, 15 Feb 2004, Graham North wrote:

> Hi Rob:
> Thank you for this help.  Thanks also to all others who replied this
> evening.
> I just came home and it is late so I will pursue all suggestions tomorrow
> evening.
> My gut sense is that it is the nic setup - at first I thought it might be my
> router (and maybe it is part of the problem but I have operated 3 different
> machines through it and networked them in the past so am starting to get
> pretty comfortable with it).  But tomorrow I will start by checking my
> cabling carefully - though the same machine if booted into Win98 works
> flawlessly so I doubt that the problem is cabling or flaky nic.  The nic is
> a 3com 3509

I thought so. it is a 10mb/s card only, full and half duplex.
I will never use one of those ISA cards again.
I now throw them out.

See if your router can set its interface to 10BaseT/UTP full duplex.
do a download test.
Change router to half duplex...
download test.

If router cannot change its settings, do this on the freebsd machine.
I am quite sure, you are using ep0. You cannot use the
the mediaopt option with ifconfig. no one bothered to code it
into the driver. unlike xl0...

if you cannot resove the issue, i would seriously look for a pci
card you can slap in it.



> which seems to be well supported.
> Auto negotiation - that sounds plausible - esp. since sometimes files do get
> through but painfully slowly.  Lowering the MTU setting shouldn't hurt...?
> To all - thanks again, I will respond further after playing tomorrow.
> Cheers,  Graham/
> ----- Original Message -----
> From: "Rob" <robert at irrelevant.com>
> To: "Graham North" <graham.north at telus.net>; <freebsd-questions at freebsd.org>
> Sent: Sunday, February 15, 2004 6:15 PM
> Subject: Re: FTP difficulties 4.8R
> > At 13:32 15/02/2004 -0800, Graham North wrote:
> > >[snip]
> > >My FreeBSD box on the other hand is a different story.   It is a PII 166
> > >[snip]
> > >It does go outside and connect, sometimes I can ftp download some small
> > >files, most times the process stalls.   I generally need to open a new
> > >terminal to kill the process.
> >
> > It may be nothing to do with this, but I get similar problems on my DSL
> > link with the default MTU setting, 1500, and I can get decidedly better
> > performance by reducing it.  Windows has some sort of dynamic adjustment,
> > but I've found it's more reliable to set FreeBSD specifically.   Try:
> >
> > #ifconfig <network_interface> mtu 1438
> >
> > and see if that makes a difference.
> >
> > There are optimum values for the mtu, depending on your link parameters,
> > and various formulae, but try that first before fiddling more.
> >
> >
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