Date: Tue, 22 Aug 2006 00:35:20 -0700 From: "Ted Mittelstaedt" <tedm@toybox.placo.com> To: "Dave Raven" <dave@raven.za.net>, <freebsd-questions@freebsd.org> Subject: Re: Cisco/BSD auto-negotiation Message-ID: <000d01c6c5bd$863292f0$3c01a8c0@coolf89ea26645> References: <041701c6c523$4bc5cfa0$c802a8c0@lucy>
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Hi Dave, I've run into stuff like this from time to time with various interfaces under FreeBSD. I've also run into it with ethernet connections under Windows. I've also run into it with Cisco-to-Cisco gear. For example if you dig around on Cisco conneciton online, you will find a known bug about connecting Cisco 2800's to Cisco 2950 switches - Cisco had to come out with a firmware update for the 2950 after releasing the 2800 due to ethernet chip incompatabilities. The smart-aleck answer is like the old "Doctor it hurts when I do this" "well don't do that" but it is also the right answer. Don't use a crossover cable in this application. I know it looks weird when you have a $7.95 hub you got from Goodwill that is plugged in between a $3K Catalyst switch and a $5K 2800 but when the customer won't pay for service on the switch to get the latest firmware for it, that's what you have to do to keep things running for them. I did leave the Goodwill price tag prominently on the hub, by the way. Ted ----- Original Message ----- From: "Dave Raven" <dave@raven.za.net> To: <freebsd-questions@freebsd.org> Sent: Monday, August 21, 2006 6:11 AM Subject: Cisco/BSD auto-negotiation > Hi all, > I'm currently looking into a problem with a Cisco 3640 router and a > FreeBSD 4.9 unit, connected via a crossover cable, that are not negotiating > correctly. > > If you force the media setting to full or half duplex it has constant > collisions on the interface, and if you let both autonegotiate the cisco > keeps resetting (every ~20 seconds) its network card. > > Are there known issues with this, or any known fixes? > > Thanks > Dave > > Ps. Please copy me on replies as I am off the list. > > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" >
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