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From: PAP4@AI.AI.MIT.EDU ("Philip A. Prindeville")
Newsgroups: comp.protocols.tcp-ip
Subject: Re: TCP/DECnet interchange router for VMesS
Message-ID: <281424.871107.PAP4@AI.AI.MIT.EDU>
Date: Sat, 7-Nov-87 21:09:15 EST
Article-I.D.: AI.281424.871107.PAP4
Posted: Sat Nov  7 21:09:15 1987
Date-Received: Sat, 14-Nov-87 04:28:14 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The ARPA Internet
Lines: 25


    Date: 2 Nov 87 19:34:27 GMT
    From: unmvax!merlin!mcdermot@ucbvax.Berkeley.EDU  (John McDermott)

    I have a problem which I hope someone has already solved:  I have a
    TCP/IP net and a large DECnet net both served by a common VAX (vms).
    Some hosts on the decnet network also run tcp/ip.  All tcp is CMU/TEK for vms.
    Now the question: are there drivers to encapsulate ip packets, send them
    over the DECnet and then make them available for retransmission at the other
    end?  I need this because my VAX with Decnet is connected to the rest of
    the DECnet network by a 56kb line and that line cannot be used for both
    decnet and tcp/ip (for political reasons at least).  Any help would be really
    appreciated.

Well, you did say `any'.  Mike Parker at McGill University (address
musocs!mcgill-vision!mouse@eddie.mit.edu) wrote an IP over DECnet
device driver for UNIX 4.3BSD.  If you have any 4.3 hosts on your
subnet, you could make it the IP gateway to the other side of that
phone line.  I believe that is what they do at McGill and it seems
to work fairly well.  I heard about someone doing the same for VMS,
but I don't remember who (was it Lou Salkind at NYU?)

Hope this helps,

-Philip