Not sure what you're getting at John.
Fast Ethernet (and Ethernet) uses pins 1,2,3 & 6.
The others are not used.
>From what I understand, Gig Ethernet uses twice as many wires (all eight).
Is that what you're after?
Gaz
""Reel, JohnX"" <[EMAIL PROTECTED]> wrote in message
39B5C4829263D411AA93009027AE9EBB01334E49@FMSMSX35">news:39B5C4829263D411AA93009027AE9EBB01334E49@FMSMSX35...
> Teunis,
>
> I wasn't very descriptive in my original email... probably confused
everyone
> reading my question.
>
> I am not looking for the pin outs, what I am trying to determine is why
the
> same CAT cable will function in both Fast Ethernet and Gigabit Ethernet
when
> they are using a different number of paired wire. If someone out there
knows
> that the pin-outs are different between the two, then it will rest that
> there is a difference at the physical layer on the NICs... If they are the
> same, then I will have to continue to investigate.
>
> Maybe a better summary is that I am wondering if the ANSI X3T 11 Fiber
> Channel Specification is the reason for the difference.
>
> It is foolish, but sometime when I run across something that I just don't
> know about, it just begs to be understood.
>
> I appreciate the answer back,
>
> John L. Reel
>
> -----Original Message-----
> From: Tony van Ree [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, February 20, 2001 1:23 PM
> To: Reel. JohnX; [EMAIL PROTECTED]
> Subject: Re: NIC 2-wire pair, 4-wire pair Question
>
>
> Hi,
>
> Why would you want differetn pinouts?
>
> Pins 1 & 2 and 3 & 6 give a Transmit and Receive pair. Pins 5 & 4 are
often
> used by telco type connections (modems, phones, isdn) and token ring.
There
> are some nice things about all of this in that you often can do less
damage
> (by incorect plugging up) using the designs the gurus came up with.
>
> Teunis
> Hobart, Tasmania
> Australia
>
>
>
>
>
> On Tuesday, February 20, 2001 at 12:04:21 PM, Reel. JohnX wrote:
>
>
> > === start ==========================
> > Quick question: The "copper" cable that connects to both the Fast
Ethernet
> > and the Gigabit Ethernet NICs to a switch is the same. It must be the
> > pin-outs on the individual NIC families that are pinned differently...
> Does
> > this sound reasonable?
> >
> > Fast Ethernet Standard:
> > 100BaseTX is CAT 5 set as 2 wire pairs
> >
> > Gigabit Ethernet Standard:
> > 1000BaseT is Cat 5 and 4 wire pairs
> > === finish =========================
> >
> > _________________________________
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>
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