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Article #3089

Re: SUN - LX and TPE port

#3089
From: Craig Dewick
Date: Tue, 17 Mar 1998 00:00
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In <6ek8f9$1ke$1@mulga.cs.mu.OZ.AU> labman@ecr.mu.oz.au (Bruce Robertson) writes:

> I have a couple of old SUN  LX  workstation..

> I wish to use the TPE port of the monsters...

I'm using an LX here (this machine) and it defaults to using TPE over AUI
when I power it up *unless* I don't plug anything into the TPE port. If I
leave the ethernet unconnected it defaults to AUI (coming out via the ISDN
audio connector) instead of TPE. You'll need a TPE hub (or a transceiver)
connected before turning the machines on.

> I plug into an adaptor to configure down to 10Base2
> and the adaptor says there is no link pulse.

From what I remember when fiddling with my LX, this should make it default
to TPE because the transceiver will be like a single-port 'hub' to the
ethernet hardware in the LX.

> I go into the EEprom of the LX and set the tpe-link-pulse? false
> (or true) and I get no net traffic..

You shouldn't need to change from the default settings.

> My problem is I would like to run off the TPE interface
> and I need the LX to originate the link pulse..

> Almost all the other SUNs do this, but the LX does not
> appear to do this..

It does, because when it's running, and I disconnect the TPE lead, the link
light goes out on the hub, and when I plug the TPE lead back in, the LED
lights again to say the link is working again.

> I will NOT be buying a hub to get this feature going
> as in a few months time we'll be putting in a Layer-2 or Layer-3
> switch to wire up a lab and my office..

It should work with a transceiver connected. hmmm. Anyone else able to shed
some light?

Regards,

Craig.
-- 
            Craig Dewick. Send email to 'cdewick@lios.apana.org.au'
  Point a web browser at 'http://lios.apana.org.au/~cdewick/sun_shack.html' to
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      about Sun Ripened Kernels, go to 'http://www.zeta.org.au/~craig/srk'
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From: cdewick@lios.apana.org.au (Craig Dewick)
Subject: Re: SUN - LX and TPE port
Date: 1998/03/17
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