DTE/DCE probably doesn't fit into ethernet too well, but it does make an
easy way of remembering what needs crosses.
This may be a pie in the sky way of remembering the connections but it works
for me.
PC clearly fits DTE category
Router in most applications used with a DTE cable (admittedly on the serial
but helps to remember it)
Switch/Hub - DCE (
DCE-DTE needs straight
DTE-DTE needs cross
DCE-DCE needs cross
Reading through this I'm wondering whether to even send it, but it's always
been the way I've remembered it.
If it helps, good. If it doesn't forget it.
Horses for courses.
Regards,
Gaz
"John Neiberger" <[EMAIL PROTECTED]> wrote in message
6741840.975736534450.JavaMail.imail@tiptoe">news:6741840.975736534450.JavaMail.imail@tiptoe...
> I wasn't aware that the terms DCE and DTE applied in ethernet; I thought
> they were serial communication terms. How would you apply those terms to
> this situation?
>
> > Hello,
> >
> > Sometimes these things happen because not all equipment have the same
> specs.
> > My suggestion would be to consider DTE to DTE needs at least one roll
in
> the
> > connection, and DTE to DCE needs a straight-through or two rolls in the
> > connection. It all hangs on the constuction of the interface connection
> and
> > which pins it is using for transmit, receive etc.
> > Bottom line is try to determine which interfaces(DTE or DCE) are
involved
> > and then it is easier to choose the correct cable.
> > Hope this helps a little.
> >
> > Winston.
> >
> > -----Original Message-----
> > From: Bradley J. Wilson [mailto:[EMAIL PROTECTED]]
> > Sent: Friday, December 01, 2000 1:31 PM
> > To: cisco
> > 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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> >
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>
>
>
>
>
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