Decnet-tcp/ip gateway.
Andrew Tridgell
tridge at anu.oz.au
Thu May 30 14:48:52 AEST 1991
I installed the decnet internet gateway (comes with the decnet stuff in
Ultrix) and have found it works like a charm. It allows our PC's to
appear as extra displays on our decstation (our PC's have a decnet based
X package - PC DecWindows). We can do the same for vaxes or whatnot.
Basically the gateway makes a decnet node appear like aerodec:N where
you can make N any display number you like.
The source and binaries for this gateway is in
/usr/examples/decnet/gatethru/ on our system (Ultrix 4.0 on a DS3100).
We added these lines to out /etc files
/etc/inetd.conf:
tba4-X11-display0 stream tcp nowait
/usr/examples/decnet/gatethru/gatewayd gatex -dnet tba4 X$X0
/etc/services:
tba4-X11-display0 6002/tcp # X11 server on tba4::0.0
/usr/examples/decnet/gatethru/gatewayd
Note that tba4:: is the decnet node name of the real machine (my PC -
but could be any decnet machine running X). The display becomes
aerodec:2 in this example (from the 6002 entry). Also note that both of
the entries above are ONE line, I added the carriage returns so it could
be read.
Performance is quite reasonable, considering the net load. It means I
can display X clients from SUN's, Sequent's etc. without installing
Decnet on them, which is a great boon. It can also be setup to work in
the other direction, but I haven't tried (read the manual for
instructions)
Thanks to DEC for a great product!
--
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Andrew Tridgell CSLab, Research School of Physical Science
tridge at aerodec.anu.edu.au Australian National University
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