[rescue] DECconcentrator 900MX FDDI setup

Dave McGuire mcguire at neurotica.com
Mon Apr 7 13:32:15 CDT 2003

On Monday, April 7, 2003, at 05:03 AM, Paul Weissmann wrote:
> 	I just got an used FDDI concentrator from DEC, a 900MX
> that is installed in a DEChub one. This DEChub has a RJ45-connector
> for a serial setup port at the back.
> Since I wanted to review the 900MX's configuration I hooked it up
> via the setup port to the next UNIX box. I used a serial cable
> normally used for Cisco routers.
> But I don't get any output from the serial port when running e.g.
> cu(1). Serial cfg was 9600-8n1. Trying a Windows computer runnning
> TeraTerm yielded also no results.
>> From what I can tell the concentrator boots up fine, looking in the
> manual and watching the LEDs.
> Has someone a clue what may went wrong or what I may did wrong?
> Or is there some way to hard-reset the concentrator/hub?

   I'm not sure as I don't have the info on-hand, but I'd be surprised 
if it used the same pinout as a Cisco console connector.  There's no 
universal standard for RS232 signaling on an RJ45.


Dave McGuire             "I've grown hair again, just
St. Petersburg, FL           for the occasion."       -Doc Shipley

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