[Info-vax] VMS to VMS data copy options/performance when losing a DECnet link

Robert A. Brooks FIRST.LAST at vmssoftware.com
Thu Apr 7 20:10:46 EDT 2022


On 4/7/2022 7:24 PM, Rich Jordan wrote:
> Customer has decided to turn off "legacy" DECnet support on their network.
> They currently use DECnet for copies between two nonclustered integrity
> servers that are on different IP subnets/VLANs and have Cisco doing whatever
> magic it does to make DECnet appear local. THis is Phase IV, not DECnet over
> IP.

Install DECnet-Plus (IA64) or DECnet/OSI (Alpha), and enable DECnet over TCP/IP.

That's likely the easiest solution, since it'll require no application change.

Other than the initial configuration, it'll be "set it and forget it".

If you have non-transparent task-to-task applications, you'll need to understand
some of the differences between Phase IV and Phase V, mostly in terminology.
Phase IV "objects" are Phase V "session control applications".  NCL vs. NCP
has a bit of a learning curve.

If your use of DECnet is limited to $ SET HOST and $ COPY, then the differences
between Phase IV and Phase V will barely be noticeable.

-- 
                  -- Rob



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