[Simh] What does "DUP" stand for ?

[Mark Pizzolato - Info Comm]

The recent discussions about KMC11 and DUP11 are about specific devices which existed in the past and were used to provide link layer connectivity for host communicating via DECnet.

This has absolutely nothing to do with the SET HOST /DUP.  From what I recall, the /DUP in this usage stands/stood for "Diagnostic Utility Protocol)".  This is the sum totol of my knowledge on this subject though.  The VMS Help says:

SET

  HOST

    /DUP

         Connects your terminal to a storage controller through the
         appropriate bus for that controller. The /SERVER and /TASK
         qualifiers are required.

         For use only with storage controllers. Requires the DIAGNOSE
         privilege.

         Format

           SET HOST/DUP/SERVER=server-name

           /TASK=task-name node-name




      Additional information available:

      Parameter  Qualifiers
      /LOG       /SERVER    /TASK
      Example

From: simh-bounces at trailing-edge.com [mailto:simh-bounces at trailing-edge.com] On Behalf Of Armistead, Jason
Sent: Thursday, May 30, 2013 11:59 AM
To: simh at trailing-edge.com
Subject: [Simh] What does "DUP" stand for ?

There's been a lot of discussion regarding KMC11 and DUP lately.

Can someone remind me what the acronym DUP stands for ?  I've done a SET HOST /DUP /DSSI before on a VAX4000-300 to set up the DSSI disks, but that was so long ago and I'm a bit rusty.

Cheers
Jason


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