henry@utzoo.uucp (Henry Spencer) (04/16/89)
Apologies if this has come up before, but until quite recently I didn't have reason to care... For involved reasons, we've got a 3Com 3c501 PC Ethernet interface on our hands. It checks out fine using the built-in transceiver for hookup to thin Ethernet. When we try to hook it up to an external transceiver, however, no go: the diagnostic program complains of being unable to transmit due to collisions. This happens with two different transceiver types. With an LED-equipped transceiver, as soon as the PC is powered up the "receive" and "collision" lights go on solid. Anybody seen this before? Suggestions? -- Welcome to Mars! Your | Henry Spencer at U of Toronto Zoology passport and visa, comrade? | uunet!attcan!utzoo!henry henry@zoo.toronto.edu
henry@utzoo.uucp (Henry Spencer) (04/16/89)
In article <1989Apr15.211504.25886@utzoo.uucp> henry@utzoo.uucp (Henry Spencer) writes: >... When we try to hook it up to an external transceiver, however, no go... Oops, I should have elaborated on this: there is a DIP plug inside which has to be shifted from one position to another when changing from internal to external transceiver. We *have* done that. -- Welcome to Mars! Your | Henry Spencer at U of Toronto Zoology passport and visa, comrade? | uunet!attcan!utzoo!henry henry@zoo.toronto.edu
ram@tslanpar.UUCP (ram) (04/17/89)
In article <1989Apr15.211504.25886@utzoo.uucp>, henry@utzoo.uucp (Henry Spencer) writes: > Apologies if this has come up before, but until quite recently I didn't > have reason to care... For involved reasons, we've got a 3Com 3c501 PC > Ethernet interface on our hands. It checks out fine using the built-in > transceiver for hookup to thin Ethernet. When we try to hook it up to > an external transceiver, however, no go: the diagnostic program complains > of being unable to transmit due to collisions. This happens with two > different transceiver types. With an LED-equipped transceiver, as soon > as the PC is powered up the "receive" and "collision" lights go on solid. > Anybody seen this before? Suggestions? I have seen this problem with ethernet cards I have set up before, although I don't think I have ever used this card in particular. With the cards I have used, there is a jumper or switch to specify which connection you want to make (either direct into thinnet or using a drop cable and tranceiver). Check your card's manual to see if it has such a switch/jumper and then check the jumper setting on the board. Regards, Richard Meesters "I disclaim, really I do!" Lanpar Technologies Inc.