oversized frame warnings
Tue Aug 18 17:33:20 1998
I should have been a more clear, I have gotten these errors from machines
when the Cisco was directly connected to the 3Com Auto hub but also when the
Cisco was directly connected to a Baynetworks 100BaseT only hub (The Cisco
4500 has a 100BaseT interface). When the Cisco is connected to the switch I
see collsion lights sometimes on the Cisco side and the only thing there is
the Cisco directly to the switch and nothing else.
I don't think its just a case of Cisco not doing autonegotiation correctly I
personally think there is something broken with the Cisco 100BaseT
implementations. Thanks for the info about Cisco's autonegotiation ability
though, I'll keep that in mind.
Quoting Donald Becker (email@example.com):
> > Quoting Liem Bahneman (firstname.lastname@example.org):
> > > I'm using quite an old tulip.c (0.77) with 2.0.30 (for the sake of SMP
> > > stability). I've noticed that when I plug the system into a 100baseT hub,
> > > I always get:
> > >
> > > eth1: Oversized Ethernet frame spanned multiple buffers, status 7fffceff!
> > > eth1: Oversized Ethernet frame spanned multiple buffers, status 063d81a2!
> This is usually related to a duplex mismatch.
> The newer drivers repeatedly check the negotiated duplex instead of just
> once at start-up, avoiding some problems with slow negotiation and
> powered-down switches.
> On Tue, 18 Aug 1998, David Mandala wrote:
> > Oddly enough I've seen this too, but it seemed to be coming from my Cisco
> > router. I put a 2 port switch in between my Cisco router and the 10/100
> > BaseT hub and the probme went way.
> I've gotten many reports about Cisco routers: most Cisco equipment doesn't
> do autonegotiation, or does it incorrectly. That's why Cisco manuals
> recommend disabling autonegotiation on both ends.
> Donald Becker email@example.com
> USRA-CESDIS, Center of Excellence in Space Data and Information Sciences.
> Code 930.5, Goddard Space Flight Center, Greenbelt, MD. 20771
> 301-286-0882 http://cesdis.gsfc.nasa.gov/people/becker/whoiam.html