Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!uwmcsd1!marque!uunet!mcvax!unido!taeva!hans
From: hans@taeva.UUCP (Hans von Kleist-Retzow)
Newsgroups: comp.unix.questions
Subject: Re: "ie0: Ethernet jammed" on a Sun 4/110
Keywords: ethernet jam
Message-ID: <347@taeva.UUCP>
Date: 2 Sep 88 08:31:28 GMT
References: <1670@aplcomm.jhuapl.edu> <5720@ihlpf.ATT.COM>
Reply-To: hans@taeva.UUCP (Hans von Kleist-Retzow)
Organization: TA Triumph-Adler AG, West-Germany
Lines: 32

In article <5720@ihlpf.ATT.COM> trdill@ihlpf.ATT.COM (Diller) writes:
>
>I can't say for sure but in the Sun 3/60 there is an internal
>jumper which when set one way will work with "cheaper-net" and
>when set the other way works with ether-net. I can't say for
>sure but the error you are getting sounds like you may have an
>un-terminated network. You may want to check if this jumper
>situation applies to the Sun 4/xxx.

The Sun 4/110 has an automatic Ethernet/Thin-Ethernet selection
feature.

I add some part of the Sun 4100 Board Set Configuration Procedures:

"If your Ethernet cable is hooked up to a multiplexer box with less
than 30 milliamps on a +12V return, the Auto Select function allowing
you to connect either Ethernet or Cheapernet automatically will not
work. You should disable the Auto Select function by forcing
Ethernet. To do this, install jumper J1800."

The location of the jumper is D-3.

---------------------------------------------
Hans von Kleist-Retzow, Dipl.-Inform.
TA Triumph-Adler AG
Hundingstr. 11b
D-8500 Nuernberg
West-Germany
Tel: +49 911 322 6355
E-Mail: hans@taeva.uucp
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