kwe@bu-it.bu.edu (Kent England) (07/25/90)
> Deos anyone know how to "null-modem" a pair of machines together using the 15 > conductor standard? I only need to go a couple feet. I think this question deserves the status of true LAN legend, like the urban legends and the net legend about the dying kid who wants postcards. It's a question that just will not die. :-) Well, I suppose it is reasonable on the surface of it. Half-seriously: What I would suggest that you do is get a couple of Cabletron ST-500s with the thintap, a pair of T connectors and barrels and a thin cable patch cord. Plug these together and install in a Bud box with only the AUI connectors sticking out. Put a big label on the Bud box that reads "Ethernet Null Modem". :-) If you ever decide to redo your net, you can open up the Bud box and reuse the ST-500s. Very cost effective, if you already buy lots of ST-500s or have a bunch lying around that you swapped out for 10BaseT. If there is sufficient interest, I would be willing to look up an appropriate sized box, and maybe come up with a template for cutting out the AUI connector holes. A LaserWriter makes dandy big-lettered labels. :-) It is sheer coincidence that one can make an RS-232 null modem work in most cases. If more vendors implemented more RS-232 signals more rigorously, then RS-232 null modems wouldn't work either. A null transceiver cable will not work. It seems silly to me to buy special two-port transceivers. So I really think the Bud box would be a good alternative. Cabletron, you listening? :-) Kent England, Boston University Disclaimer: If in doubt, add your own smiley face.
dd@ariel.unm.edu (Don Doerner) (07/27/90)
In article <61243@bu.edu.bu.edu> kwe@bu-it.bu.edu (Kent England) writes: >> Deos anyone know how to "null-modem" a pair of machines together using the 15 >> conductor standard? I only need to go a couple feet. > > I think this question deserves the status of true LAN legend, like >the urban legends and the net legend about the dying kid who wants postcards. >It's a question that just will not die. :-) Well, I suppose it is reasonable >on the surface of it. Half-seriously: > > What I would suggest that you do is get a couple of Cabletron ST-500s >with the thintap, a pair of T connectors and barrels and a thin cable patch >cord. Or check into the Netcor ANC-10. This is just what you are asking for. Should cost less than $200. Don Doerner, Manager, Communications and Networking University of New Mexico Albuquerque, NM, 87131 505/277-8036 -- -------------------------------------------------------------------- Don Doerner dd@ariel.unm.edu 2701 Campus Blvd. NE (505)277-8036 Albuquerque, NM, 87131