I'm at the end of all my knowledge and I can't find any explaination for the following issue. So I hope anyone of you Network Guru's can give me an idea why this would happen. I have this scenario in a Network: A couple of PC's are connected to a 3300 Switch made by 3COM which are connected using 3 metres long TP (normal CAT5) cables. The stations have diffrent OS'es like Linux and Novell Netware. However the problem seems to be the cable not the operating systems. I use diffrent protocols over this network to establish a communication, like IPX and of course TCP/IP. Now the weird thing is if I use one cable, IPX data comes through, but no TCP/IP traffic. If I exchange the cables again, both TCP/IP and IPX work. I tried with tcpdump (filtering UDP and diffrent ethernet protocols), but I only get IPX through with this cable! I used diffrent stuff to test this cable, like fluke 2000 dsp pro and fluke 1000 dsp and a lot of diffrent volt/ohm testers. The cable seems to function ok. I tried other switches such as 3COM 3300, HP pro curve 4000, DLink 10/100, but I only get IPX through with that cable. This cable doesn't have a chip and ethernet is ethernet, no? I would really like to know what makes this cable diffrent. Its not the operating systems since I tried some Windows and other Netware 4.x server too. Both only get IPX through it. How can a cable filter specific ethernet protocols? Best Regards, Thomas Kuiper Thomas Kuiper | [EMAIL PROTECTED] | www.tobit.com __ Core Development | TK3680-RIPE | /__/\ Tobit Software | ICQ #8345483 | ask your server. \__\/
