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 ========================= > > _________________________________ > FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > > -- www.tasmail.com _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
