[vortex] Strange issues with 3COM cards on Linux - DHCP oddities.

[Shawn Starr]

Thank you both for the info. I shall try it out tomorrow when I come into
work :)

Shawn.

Raymond Lillard wrote:

> Shawn,
>
> A related possibility is that the switch might be mishandling
> the auto-negotiation when connected directly to the 3com
> card.  Although we don't use DHCP here, we have experienced
> communication problems due to auto-negotation failures when
> connected directly to a Catalyst 2980G that dissapeared when
> connected through a D-Link 8-port switch (DSS-8+).
>
> Cisco has an app-note on this.  If Joe's advice below doesn't
> help look at the negotiated media and duplex settings with
> vortex-daig.
>
> Best
> Ray
>
> > -----Original Message-----
> > From: vortex-admin@scyld.com [mailto:vortex-admin@scyld.com]On Behalf Of
> > Joe Rouvier
> > Sent: Tuesday, August 28, 2001 5:31 PM
> > To: Shawn Starr; vortex@scyld.com
> > Subject: Re: [vortex] Strange issues with 3COM cards on Linux - DHCP
> > oddities.
> >
> >
> > That sounds like a problem with the switch not starting to
> > forward traffic to
> > your box fast enough after the link gets reset.  Try adding the PortFast
> > option to your cisco config.
> >
> > Also, see this doc:
> > http://www.cisco.com/warp/public/473/12.html
> >
> > On Tuesday 28 August 2001 16:55, Shawn Starr wrote:
> > > Hello, I've been experiencing strange issues with DHCP and 3COM cards on
> > > Linux kernels 2.2, and 2.4 using RedHat 6.1 and 7.1 respectively, here's
> > > the strange part.
> > >
> > > When connecting the 3Com card directly to a Switch (Catyalst 3548)
> > > DHCP times out on the system.
> > > When connecting the card to a Hub which is connected to the Switch (via
> > > the Uplink port), DHCP works fine and the card functions normally.
> > >
> > > What is happening? Is this a driver issue or something else?
> > >
> > > Thank you,
> > >
> > > Shawn.
> >
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