Path: utzoo!utgpu!water!watmath!clyde!ima!necntc!ames!lamaster
From: lamaster@ames.arc.nasa.gov (Hugh LaMaster)
Newsgroups: comp.dcom.lans
Subject: Re: request for DEQNA's in uvaxII
Message-ID: <12735@ames.arc.nasa.gov>
Date: 2 Aug 88 20:13:40 GMT
References: <870@lln-cs.UUCP> <3880005@eecs.nwu.edu>
Reply-To: lamaster@ames.arc.nasa.gov.UUCP (Hugh LaMaster)
Organization: NASA Ames Research Center, Moffett Field, Calif.
Lines: 17

In article <3880005@eecs.nwu.edu> jpd@eecs.nwu.edu (J. Phillip Draughon) writes:
>> with 2 DEQNA's and I have the following problem: when the gateway is
>> active, it runs fine but all other activites (on local disks) are impossible.
>That is exactly the behavior that we noticed.  You can have either

It sounds like it might be a bus priority problem.  I am not sure if DEQNA's
have some kind of "autothrottle" or "adaptive DMA" or whatever, but I know
that sometimes two such controllers can effectively lock out everything else
on the bus.  You might check and see if the DEQNA can be configured in two
modes, and try the other one.  At least with Unibus devices, the solution
is another Unibus.

-- 
  Hugh LaMaster, m/s 233-9,  UUCP ames!lamaster
  NASA Ames Research Center  ARPA lamaster@ames.arc.nasa.gov
  Moffett Field, CA 94035     
  Phone:  (415)694-6117