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Conference 7.286::fddi

Title:FDDI - The Next Generation
Moderator:NETCAD::STEFANI
Created:Thu Apr 27 1989
Last Modified:Thu Jun 05 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2259
Total number of notes:8590

1146.0. "Loopbacks in unused DEFCN ports." by SIOG::PKIRK (I wonder if I'm on the right planet......?) Fri Nov 12 1993 05:49



	Hello All

	Should loopback connectors (12-32005-01) or the dust covers be 
	installed in unused Multomode ports in a DECconcentrator 500.

	The installation documentation is not specific on this.

	Paul Kirk
	Dublin MCS

	
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1146.1Use dustcovers!HOO78C::RIETKERKBart Rietkerk-Hoogeveen-HollandFri Nov 12 1993 07:5312
    
    Hello Paul,
    
    To my knowledge you can use the loopback-connectors for test-purposes
    (you can see the led's change state; if not you have a problem).
    You should use the (black) dust-covers to prevent the FO-connectors
    on the concentrator from being contaminated. That could otherwise give you
    unwanted attenuation if you decide to use those ports later on.
    
    Cheers,
    
    Bart Rietkerk.
1146.2KONING::KONINGPaul Koning, B-16504Fri Nov 12 1993 09:463
Right.  Loopback connectors are not necessary or useful in normal use.
But dustcovers should be installed on any unused connector...
	paul