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TCP/IP Services for OpenVMS

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Kevin Raven (UK)
Frequent Advisor

TCP/IP Services for OpenVMS

Whats the quick and easy way to change an IP Address/Subnet Mask/ Default Router-Gateway?

I was just going to run
Options :-
Stop IP
Config core env
Interface (then) Routing <--Options
Start ip

What do you think ?

We run the following version of OpenVMS and IP

$ ucx show version

HP TCP/IP Services for OpenVMS Alpha Version V5.4 - ECO 5
on a AlphaServer ES45 Model 2B running OpenVMS V7.3-2


Standalone ES45 ...

Karl Rohwedder
Honored Contributor

Re: TCP/IP Services for OpenVMS

That sounds o.k., I even think stopping is not neccessary, the new settings will take effect on the next startup.

regards Kalle
Volker Halle
Honored Contributor

Re: TCP/IP Services for OpenVMS


you may first need to remove the current local host name from TCPIP$HOST.DAT ($ TCPIP SET NOHOST xxx), if you want to keep the name and just change the IP address.

I normally delete the old interface with TCPIP SET CONF NOINT xx0 and then run @TCPIP$CONFIG to configure the interface.

Jan van den Ende
Honored Contributor

Re: TCP/IP Services for OpenVMS


this may be completely superfluous, but, when you are going to execute this, _DO_ use a session that is in NO way dependant on TCP/IP !!!
(use the console, or a DECnet connection, or a LAT session, or, ... ANYTHING but TELNET or SSH or...


Have one on me.

Don't rust yours pelled jacker to fine doll missed aches.
Robert Gezelter
Honored Contributor

Re: TCP/IP Services for OpenVMS


To somewhat clarify Jan's comment: Please verify that the path used by your connection DOES NOT go through the IP Stack in any way (Yes, I have seen people take the advice to use DECnet; only to discover that their DECnet connection was through an IP tunnel).

- Bob Gezelter, http://www.rlgsc.com
Kevin Raven (UK)
Frequent Advisor

Re: TCP/IP Services for OpenVMS

Thanks for the pointers on this.

Yes I will do the config via the console.

John Travell
Valued Contributor

Re: TCP/IP Services for OpenVMS

On those occasions when I have had no choice but to remotely reconfigure or restart TCPIP, I have put all of the commands needed into a batch job and 'submit/user=system', then login again after the changes...