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DECNET PHASE IV address

 
Kevin Raven (UK)
Frequent Advisor

DECNET PHASE IV address

Many moons ago I had a technical advise on how to change the DECNET address of a OpenVMS Decnet phase IV server.

If I remeber the steps involved were to:
Purge and clear the node from the DECNET database.
Define and Set the node in the DECNET database.
Then Clear and purge the EXEC Node number
and SET and DEF the EXEC node number.
Also change the SCSSYSTEMID via Sysgen and modparams.dat

2 REPLIES 2
Volker Halle
Honored Contributor

Re: DECNET PHASE IV address

Kevin,

that's about right.

If you can reboot (and you need to, to get the SCSSYSTEMID changed), just modify the address in the DECnet permanent database (NCP DEFINE and PURGE), then edit MODPARAMS.DAT (new SCSSYSTEMID), run @AUTOGEN GETDATA SETPARAMS and reboot.

Volker.
Hoff
Honored Contributor

Re: DECNET PHASE IV address

Here's the sequence for changing the host node name; this is a superset of what you're up to here with the DECnet node number:

http://64.223.189.234/node/589

You may (will) need to modify the DECnet database on other hosts via COPY KNOWN NODES or such. DECdns might be involved, too, if you're using that.

And then there's a the whole discussion of area routing, if you're switching DECnet areas.

If you have a moderate-scale to large number of DECnet hosts (increasingly unusual, but there are still a few of these DECnet networks around), watch out for the MAX values for areas and routers and such. In typical DECnet networks, these need not be adjusted. But if you have an unusual number of routers (32, IIRC) or such, you might.