Even that is incorrect. The pins that ethernet uses with RJ45 is 1/2 and 3/6, not 3/5 or 4/6.
Straight Through: One End: Other End: 1 -> 1 2 -> 2 3 -> 3 6 -> 6 Null Cable One End: Other End: 1 -> 2 2 -> 1 3 -> 6 6 -> 3 And if you really want to be thorough then on the straight through 4 -> 4, 5 -> 5, 7 -> 7, 8 -> 8 and on the null cable 4 -> 5, 5 -> 4, 7 -> 8, 8 -> 7 vec ----- Original Message ----- From: "Mike Dresser" <[EMAIL PROTECTED]> To: "Elizabeth Barham" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Cc: "list debaun" <debian-user@lists.debian.org> Sent: Wednesday, March 27, 2002 9:44 AM Subject: Re: OT Any web site that teaches how to make LAN cable connection > > There's straight-thru and crossover - for crossover, they should be > > reversed. If the original is BLUE-RED-GOLD then the matching one > > should be GOLD-RED-BLUE (example is for explanatory purposes only). > > Straight-thru is literally that ; the wire on both ends should look the > > *exact* same through the RJ-45. > > > > Straight-Thru: > > > > 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 > > (bottom) (bottom) > > > > Cross Over: > > 1 2 3 4 5 6 7 8 8 7 6 5 4 3 2 1 > > (bottom) (bottom) > > > > Elizabeth > > Please don't follow either of these wiring diagrams. > > It's very important that pin 3/5(or 4/6, depending on how you look at it) > are swapped on both ends. > > You want: (T-568A) > > White/green, green, white/orange, blue, white/blue, orange, white/brown, > brown > > Sometimes you'll see (T-568B, preferrred for new installations) > > White/Orange, Orange, White/Green, Blue, White/Blue, Green, White/Brown, > Brown. > > Both will work the same. > > For crossover: > > Do above, one side the orange/blue/green/brown setup, and the other side > the green/blue/orange/brown setup. > > If you don't swap the 3/5(4/6) pins, your cable will might work, but > you'll get massive crosstalk, especially over distance or in an > electrically noisy environment. > > Please see: > > http://www.escape.ca/~droopy/ethernetcables.html > http://www.incentre.net/incentre/frame/ethernet.html > > Also, see: > > http://catalog.belkin.com/IWCatSectionView.processs?IWAction=Load&Merc hant_ID=&Section_Id=522 > http://www.startech.com/cable/networking.htm > > Because that's a LOT easier and more reliable way to do it! If you > are making your own cables, proper cable testers cost far too much money. > I make do with an old Fluke 620, but it isn't rated for 100mbit or > gigabit. > > Hope this helps, > Mike Dresser > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]