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From: EC0N@TE.CC.CMU.EDU (Eric R. Crane)
Newsgroups: mod.computers.vax
Subject: VMS <--> Tops-20 DECnet
Message-ID: <12228256657.25.EC0N@TE.CC.CMU.EDU>
Date: Mon, 4-Aug-86 22:20:01 EDT
Article-I.D.: TE.12228256657.25.EC0N
Posted: Mon Aug  4 22:20:01 1986
Date-Received: Tue, 5-Aug-86 23:06:01 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
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Approved: info-vax@sri-kl.arpa

First a quick description of our situation...

We have 2 DECnet links from V4.2 VMS systems to V5.4 Tops-20 systems.
The first link it a pair of 1Mb DMC-11's, and the other is a pair of
DMR-11's at 1Mb in DMC compatability mode.  What we see on our these
systems when we start DECnet is the DN20 says the circuit is
"starting" and the Vax says "Syncronizing".  The DMC link has been in
use for 5 months and just stopped working last week. That is the
problem. 

What we have tried doing to isolate or fix these problems is check out
all of the DMR's and DMC's involed by connecting them to other
systems, looping back at the local system, and looping back at the
remote system.  All of these seem to work just fine when we are
talking 20 to 20 or Vax to Vax.

Has anyone else had this type of problem?  We have not changed any
software on any of the systems involved for over 2 months.

- Eric Crnae
  Carnegie Mellon
  Computation Center
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