topic Re: Changing Systems IP Addresses in Operating System - OpenVMS

Changing Systems IP Addresses

LM_2 — Thu, 03 Feb 2005 15:21:03 GMT

I have a cluster setup and the two systems have a 192 ip address - our company has switched from 192 addresses to 10 addresses. We are currently experiencing some slow downs with our telnet and our Advanced Server. We are pretty sure it is because everything else is on a 10 address and the two vms systems are still on the 192 address. My question is, is how difficult is it to change the two system's ip address? What does this entail and is it a major project which needs much research? If anyone has done this or knows what needs to be done, I would greatly appreciate any type of feedback you can give me. I am not sure if you need to know this - but our vms version is currently 7.2-1. I will be upgrading to 7.3-2 but would like to get the addresses changed first and then do the upgrades. Too many changes at once is never a good thing.

Re: Changing Systems IP Addresses

Robert Gezelter — Thu, 03 Feb 2005 15:30:00 GMT

Lisa,

Changing IP addresses is easy, although I do recommend that you do it from a DECnet connection, or at least a connection other than TELNET (otherwise shutting down the IP stack and restarting it will be a problem). That said, you do not need to be at the console.

If you are running TCP/IP services, then the SYS$MANAGER:TCPIP$CONFIG.COM procedure will guide you through the process (Interfaces is an option under Core environment).

TCPWare and Multinet are different, but not dramatically more difficult.

- Bob Gezelter, http://www.rlgsc.com

Re: Changing Systems IP Addresses

LM_2 — Thu, 03 Feb 2005 15:34:06 GMT

I do use Process Software's tcpware - so I guess I will need to work with them.

Re: Changing Systems IP Addresses

Robert Gezelter — Thu, 03 Feb 2005 15:38:21 GMT

Lisa,

While I don't have TCPware handy, my recollection from working with it as client facilities is that it is straightforward.

- Bob Gezelter, http://www.rlgsc.com

Re: Changing Systems IP Addresses

Kris Clippeleyr — Thu, 03 Feb 2005 16:00:43 GMT

Lisa,

Reconfiguring IP addresses with TCPware is done via:
$ @TCPWARE:CNFNET TCP
You might consult the manual at
http://vms.process.com/ftp/tcpware/documentation/html/tcpware.html
more specific at
http://vms.process.com/ftp/tcpware/documentation/html/installation/Ch03.htm#E52E30
and
http://vms.process.com/ftp/tcpware/documentation/html/installation/Ch03.htm#E52E34
You might have to change other things too (e.g. default gateway)
Regards,
Kris (aka Qkcl)

Re: Changing Systems IP Addresses

Ian Miller. — Thu, 03 Feb 2005 16:04:52 GMT

@tcpware:cnfnet menu
and follow the prompts.

See manual
http://vms.process.com/ftp/tcpware/documentation/html/installation/Ch03.htm#E52E34

Re: Changing Systems IP Addresses

LM_2 — Thu, 03 Feb 2005 16:17:04 GMT

I see the responses are that I just need to change it in tcpware. Now, I haven't brought up any new system in quite some time - is there a place when you initially setup a system that you give it an ip address?? Or by me just changing it in tcpware I should be good to go??

Re: Changing Systems IP Addresses

Doug Phillips — Thu, 03 Feb 2005 17:17:01 GMT

Lisa,

TCPware will do it for VMS but you'll need to consider anything else on the network that uses static routing or host tables.

Doug

Re: Changing Systems IP Addresses

Mobeen_1 — Fri, 04 Feb 2005 01:08:22 GMT

Lisa,
I have used TCPWare for years. The best option would be to do the following

@tcpware:cnfnet menu

Once you are in that menu you can choose the appropiate options and change the IP address.
Once this is done, you can use the same menu and restart the TCPIP services. As others have mentioned, please use DECnet connection while doing this :)

There is an easy way of doing this directly, which i would not recommend if one is not very familiar with TCPware, the way is

edit the file

TCPWARE:TCPWARE_CONFIGURE.COM

and change the IP address for the interface that you would like to and then restart TCPIP services using @tcpware:cnfnet menu

regards
Mobeen

Re: Changing Systems IP Addresses

Mobeen_1 — Fri, 04 Feb 2005 04:12:38 GMT

Lisa,
I saw your 2nd question just now....

If you know what you are doing ... the whole TCPIP configuration from TCPWare is contained in TCPWARE:TCPWARE_CONFIGURE.COM, go ahead and modify this

If you need any specific help on this, let me know, i would be able to help you

rgds
Mobeen

Re: Changing Systems IP Addresses

Mobeen_1 — Fri, 04 Feb 2005 04:15:33 GMT

Lisa,
If you would like to reply on documentation, please follow the steps listed below for configuring TCPware on your systems from process software

http://vms.process.com/ftp/tcpware/documentation/html/installation/httoc.htm

rgds
Mobeen