[Info-vax] Phase IV over IP

[Johnny Billquist]

On 2023-06-23 04:03, Andy Green wrote:
> Holy cow, I'm so happy to see such an active community here after all these years :)

There are still crazy people around. ;-)

> So I have a question for the experts;  I have two VMS 5.5-2 systems that I'd like to have talk to each other.  The problem is they're in different locations, but they are connected over the Internet.  They are both Phase IV end nodes and they're both running UCX.
> 
> Is there some way I can get the two of them to talk DECnet Phase IV to each other over the Internet?  I have the option of putting OpenVMS 7.3 full routing nodes (running Phase IV, preferably) in between them to act as "translators", if that would work?

Several ways. As mentioned, if you have Multinet installed instead of 
UCX, then you can setup DECnet circuits that runs over IP. So you can 
connect any nodes that can just talk IP to each other.

Another option mentioned is PyDECnet. This also runs Multinet-compatible 
links over IP. But in addition, it's a full phase IV routing node. So 
you can have that on an adjacent machine with ethernet connectivity to 
your VMS host. And then have PyDECnet route the packets from your local 
ethernet over a link on IP to the remote end. Remote end can run 
PyDECnet, or Multinet on VMS (or even RSX, which also support this).

   Johnny