Let's look at things logically. When we connect two PC's together, we use a
cross-over cable. A cross-over cable logically connects the transmit pair on one
side, with the receive pair on the other side.
Now, if you were to connect those same two PC's together using a hub, the hub would
perform the transmit pair to receive pair connection process - you would use two
straight through cables (one connected to each PC, terminating at the hub). Picture
the hub port as having an "x" on the port, signifying the transmit to cross-over
process.
Now let's throw in something a little different. PC "A" is connected to hub "A". PC
"B" is connected to hub "B". Hub "A" and Hub "B" are connected together. If both
PC's were connected to their respective hubs with straight-through cables (as they
should be), what type of cable should interconnect the two hubs? Draw yourself a
diagram, and show the transmit to receive switching processes at each stage. That
should help you to identify what type of cable to use between hubs, or between a hub
and a switch.
Now earlier I had to picture a hub port as having an "x" on the port - some hubs and
switches do in fact have an "x" marked on one or more ports. After you understand
when you require a cross-over cable, and when you require a straight through, I'll
explain the significance of the "x" on the port.
-- Leigh Anne
> -----Original Message-----
> From: Yee, Jason [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, August 10, 2000 8:57 PM
> To: '[EMAIL PROTECTED]'
> Subject: RE: cross or straight?
>
>
> I know that's the case but I wish to know the details you see
>
> thanks anyway
>
> if you can input more all the best
>
>
> Jason
>
> -----Original Message-----
> From: Leigh Anne Chisholm [mailto:[EMAIL PROTECTED]]
> Sent: Friday, August 11, 2000 10:48 AM
> To: Jason; [EMAIL PROTECTED]
> Subject: RE: cross or straight?
>
>
> Because...
>
> sometimes cross wires work, sometimes they don't. If they don't, then we
> need straight.
>
> And sometimes straight work, sometimes they don't. And then we
> need cross.
>
> But seriously, think about transmit and receive...
>
>
> > -----Original Message-----
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
> > Jason
> > Sent: Thursday, August 10, 2000 8:32 PM
> > To: [EMAIL PROTECTED]
> > Subject: cross or straight?
> >
> >
> > hi Anyone
> >
> > knows why sometimes we need straight and sometimes we use cross wire?
> >
> > sometimes switch to route we use cross and sometimes we use straight?
> >
> >
> > Any input will be greatly appreciated
> >
> > thanks
> >
> > Jason
> >
> >
> > ___________________________________
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> >
>
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