----- Original Message ----- From: "Steve Barr" <[EMAIL PROTECTED]> To: "Nick Willson" <[EMAIL PROTECTED]>; <debian-user@lists.debian.org> Sent: Sunday, April 23, 2000 9:27 PM Subject: RE: Trouble with toy network
> > Seeking help persuading a desktop and laptop to talk to each other over a > > private network (192.168.0.0). > > > > The 'link' LEDs at both ends remain dark and no communication > > appears to be > > taking place. Ping from either side results in 100% packet loss, > > and telnet > > from either side results in 'No route to host'. It's just some silly > > misconfiguration, I hope. More details below, all help welcome. > > Hi Nick. Maybe I can help. Are you connecting the laptop and desktop > computers to a hub, or directly to each other? > > If you are connecting them to a hub, standard cables are needed. If you are > connecting them directly to each other you need a cross-over cable. > > I believe the pin out for a cross-over cable is: > > ONE END OTHER END > 1 3 > 2 6 > 3 1 > 4 4 > 5 5 > 6 2 > 7 7 > 8 8 > > I haven't read and digested all of the information that you included in your > post. I am impressed with all of the information. If the cabling doesn't > help, I will read the remaining information and see if anything jumps out. > > Steve Barr > [EMAIL PROTECTED] > > > -- > Unsubscribe? mail -s unsubscribe [EMAIL PROTECTED] < /dev/null > Steve's right, but in a standard 10-BaseT connection pins 4,5,7,8 don't need to be connected at all. The best solution would be to get yourself a hub: they are cheap (especially 10Mb only), they allow you to attach other systems, you use standard cables. Unless you have an RJ-48 crimper, cat 3 (or better) cable, and the crimp-on connectors it can be problematic to make a cable that works... cutting a standard cable and trying to splice it together generally won't work. If you do make the cable, make sure that you are using the right crimp-on connector. Most cat 3-5 cable is solid core wire, and if you try to use a connector intended for braided cable you won't get a good connection. I haven't looked lately for a crossover cable at a computer store like CompUSA or at Best Buy, so I wouldn't count on finding one. The link lites on the adapters have to be on, it tells you that the transmit pair (1,2) is talking to a receive pair (3,6) on the other side. The hubs have ports that have receive on 1&2 and transmit on 3&6 so you can use the standard straight thru cable. Scott Chamberlain (speaking from past experience in large ethernet wire plant installations... not doing that now, thank God!)
