From owner-freebsd-questions@FreeBSD.ORG Sun Nov 28 11:01:56 2004 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 478A216A4CE for ; Sun, 28 Nov 2004 11:01:56 +0000 (GMT) Received: from smtp.ade.swiftdsl.com.au (smtp.ade.swiftdsl.com.au [218.214.228.98]) by mx1.FreeBSD.org (Postfix) with SMTP id F382243D2F for ; Sun, 28 Nov 2004 11:01:54 +0000 (GMT) (envelope-from imoore@picknowl.com.au) Received: (qmail 27103 invoked from network); 28 Nov 2004 11:01:56 -0000 Received: from unknown (HELO daemon.foo.com) (218.214.176.70) by smtp.ade.swiftdsl.com.au with SMTP; 28 Nov 2004 11:01:56 -0000 From: Ian Moore To: freebsd-questions@freebsd.org Date: Sun, 28 Nov 2004 21:31:43 +1030 User-Agent: KMail/1.7.1 References: <20041128095501.82292.qmail@web25407.mail.ukl.yahoo.com> In-Reply-To: <20041128095501.82292.qmail@web25407.mail.ukl.yahoo.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2195375.juxWvVatio"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200411282131.51002.imoore@picknowl.com.au> cc: johne edw Subject: Re: rj-45 connector X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 28 Nov 2004 11:01:56 -0000 --nextPart2195375.juxWvVatio Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Sun, 28 Nov 2004 20:25, johne edw wrote: > dear sir, > i've 3 computers and i want to connect them togather as a workgroup > network via a hub. i know that the both ends of cable must have the same > sequense of color .please advice me if that the color sequence of wires > connected to rj-45 connector is important or not?..i mean, in another wor= d, > is there a special sequense of color ? or any sequense of color will be > valid when the both ends have the same color sequense ? i wish that > response will come on soon........best regards > This is rather OT, but... Yes, the order is important, the cable will probably work at low speeds ove= r=20 short distances as long as both ends are the same, but will be unreliable a= t=20 high speeds or longer distances unless you follow the correct order. Basically there are 2 standards, EIA/TIA-568A and EIA/TIA-568B. In Australia & probably in Europe I suspect, the preferred standard is the = A=20 standard. I think the US might use the B standard? EIA/TIA-568A standard: 1 Green/White 2 Green 3 Orange/White 4 Blue 5 Blue/White 6 Orange 7 Brown/White 8 Brown (see diagram below for pin numbers) NB, the Blue pair is reversed - that's not a typo! Both ends are wired up the same way, BUT, if you want to connect 2 network= =20 cards directly together without a hub, you would need to use a crossover=20 cable which looks like the above on one end, but the other end is wired lik= e=20 this: 1 Orange/White 2 Orange 3 Green/White 4 Blue 5 Blue/White 6 Green 7 Brown/White 8 Brown Pin numbers are like this (looking at the connector with the tab underneath= =20 and the cable coming from the left) |---------------------------| | ---- | 1 | ---- | 2 =2D------------------| ---- | 3 | ---- | 4 | ---- | 5 =2D------------------| ---- | 6 | ---- | 7 | ---- | 8 |---------------------------| Hope that makes sense. Cheers, =2D-=20 Ian GPG Key: http://homepages.picknowl.com.au/imoore/imoore.asc --nextPart2195375.juxWvVatio Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQBBqbAefITqkXhImmIRAiX2AJ475YtjuyxIf1EqNNf8YPCYopP8pwCbBRrC 2uguZ74hjoVZD/4CfvGewxY= =7Qi0 -----END PGP SIGNATURE----- --nextPart2195375.juxWvVatio--