Yikes! Before you go CAPS LOCKING people with wrong
advice, you might want to check your answer.
Hubs do not work at L2. Crossover is definitely the
right cable to use, but not for your reason.
Rule should go roughly like this:
1. Hub/Switch to anything but another Hub/Switch is
straight-through.
2. Everything else is crossover.
--- Elias Aggelidis <[EMAIL PROTECTED]> wrote:
> You are making a BIG MISTAKE !
>
> Switches are working on L2 as and HUBs.
>
> So when you are connecting a Hub to a switch you
> must
> use a crossover cable !
>
> Regards
> Elias Aggelidis
> ----- Original Message -----
> From: "Bradley J. Wilson"
> <[EMAIL PROTECTED]>
> To: "cisco" <[EMAIL PROTECTED]>
> Sent: Friday, December 01, 2000 2:30 PM
> Subject: Hub-to-Switch connection problem
>
>
> > Okay gang, I had an interesting and annoying
> situation yesterday morning,
> > and I'd like to see if anyone else has had an
> experience like this:
> >
> > My client was installing an older BayStack 301
> switch into their existing
> > network, which consisted of a Bay Access Node
> router, as well as four
> > stacked SynOptics LattisHubs. The router was
> experiencing excessive
> > collisions, hence the installation of the switch.
> So we installed the
> > switch and cabled the router to it, moved all the
> "power users" directly
> > onto the switch, and left the other users attached
> to the hub. We attached
> > the hub to the switch via a straight-through
> cable.
> >
> > The users who were directly connected to the
> switch had no problem accessing
> > the network and Internet. The users on the hub
> were dead in the water. We
> > tried swapping out the cable between the hub and
> switch, tried plugging
> > either end into different ports, tried flipping
> the MDI/MDI-X switch, and
> > nothing worked. The only thing that *did* work
> was using a *crossover*
> > cable between the hub and the switch.
> >
> > Now, the rule (which I gleaned from this
> newsgroup, btw) is that when you're
> > connecting devices at different OSI layers, you
> use a straight-through -
> > e.g. PC to hub, PC to switch, switch to router,
> hub to switch - that's all
> > straight-through. You use a crossover when you're
> connecting devices at the
> > same OSI layer - router to router, switch to
> switch, hub to hub, PC to PC.
> > In the situation yesterday, a straight-through
> seemed logical, as we were
> > trying to connect a hub to a switch. Am I wrong
> here? Why did the
> > crossover work?
> >
> > Thanks,
> >
> > BJ
> >
> > P.S. sorry for the Bay-centric example...I'm
> trying to get them to change
> > that. ;-)
> >
> >
> >
> >
> > _________________________________
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> > Report misconduct and Nondisclosure violations to
> [EMAIL PROTECTED]
> >
>
> _________________________________
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