Greg - I think you have hit the nail!! On Onno's advice, I tried connecting the new switch with a short cable on the same desk, with some surprising results.
No matter whether I used a straight through or crossover cable, or which port on either hub I connected to, the two hubs (and a sample of connected printers/laptops, etc) all worked perfectly, at their top respective speeds!!! In other words, I could take either cable type (straight or crossover) and connect between *any* ports (including the "uplink" port, and all combinations worked!! The main cable in the house is probably about 40 metres and was originally salvaged from a previous office installation, so is probably defective. I'll start with replacing the end connectors, then try new cable (laid on the floor until I know it works)... Thanks for your help! Rod --- In [EMAIL PROTECTED], Greg Pennefather <[EMAIL PROTECTED]> wrote: > Rod > > First of all - take cold comfort that what you have done (as described) > should work. So here are some suggestions/ideas > > - how far away from each other are the hubs? If they are more than about > 80m apart (by cable length) then you are on the limits of 100M operation > > - how good is your cable? Did you make the cable and, if so, did you adhere > to the Cat 5 standards for making the cable? ie. Number of twists undone at > each connector, use of cat 5 jacks etc. 10M Ethernet is a lot more > forgiving of these things than 100M. Given that the system works at 10M > this could be your problem - especially on a long cable run. Solution - get > a professionally made cable. > > - do you get a link light on on either the switch or the hub or both? You > will obviously need link lights at both ends. > > - given that both devices auto negotiate speed try setting one (if possible) > to a fixed speed of 100M. Sometimes the speed auto negotiate won't work if > both ends are doing it - although it should. > > - crossovers or straight through shouldn't matter by the sounds of it. Auto > detection of this has been about for a while - the G4 Powerbooks have had > this from day 1. > > Hope this helps > > Cheers > > Greg > > > on 7/1/03 3:23 PM, rkevill <[EMAIL PROTECTED]> at > [EMAIL PROTECTED] wrote: > > > Hi all, > > > > Having a problem connecting a new 10/100 "auto everything" > > Switch to my existing 10/100 hub. > > > > My old 10/100 Hub (at one end of the house) has 8 ports, one of > > which is adjacent to an Uplink port which was used to connect > > between this hub and an older 10mb-only hub at the other end of > > the house. > > > > I replaced the old 10mbs-only hub with the new Switch, and > > used the existing Cat5 cable to connect to the 10/100 hub, but > > the computers at each end could only see "local" > > computers/devices connected to the same "end" hub. > > > > So, although each hub was working fine with the "local" devices, > > the two hubs were not talking to each other. A computer at one > > end could not see devices connected to the hub at the other end > > of the house. > > > > Is that clear? > > > > Anyway, I tried all sorts of combinations, even read the manuals > > for both hubs. As I understand it, the new Switch shouldn't care > > whether the connecting cable is a crossover or not, since it looks > > like it "auto-senses" everything, even crossovers? > > > > I tried a few different ports, with and without crossover, to no > > avail. > > > > So I'm now using the new switch with the old 10mbs-only hub, > > and it works fine, but of course only at 10mbs. The local end of > > the house works OK at 100mbs, but I only have 10mbs between > > each end of the house. > > > > Any suggestions? > > > > Thanks > > Rod > > > > > > -- The WA Macintosh User Group Mailing List -- > > Archives - <http://www.wamug.org.au/mailinglist/archives.html> > > Guidelines - <http://www.wamug.org.au/mailinglist/guidelines.html> > > Unsubscribe - <mailto:[EMAIL PROTECTED]> > > > > Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/ > > > >
