topic Re: Trying to change DECNet address on upgraded system. in Operating System - OpenVMS

Trying to change DECNet address on upgraded system.

dB LEE — Wed, 21 Feb 2007 13:32:51 GMT

Hell Everybody.
I have a 7.1 system that I upgraded to 7.3.
I tried to modify the DECNet address using:
$ @SYS$MANAGER:NET$CONFIGURE.COM
This accepts and confirms my new address but
when I use:
$ SHOW NETWORK
it still reports the old address!
What's up with that?
Thanks for any help
-dB

Re: Trying to change DECNet address on upgraded system.

Steven Schweda — Wed, 21 Feb 2007 13:39:24 GMT

Did you stop and re-start the network after
you made the changes? The address may not be
a dynamic property.

Re: Trying to change DECNet address on upgraded system.

Andy Bustamante — Wed, 21 Feb 2007 13:49:01 GMT

You'll also need to modify sysgen parameter SCSSYSTEMID.

See $ MCR SYSGEN
>help Sys_Parameters SCSSYSTEMID

Andy

Re: Trying to change DECNet address on upgraded system.

dB LEE — Wed, 21 Feb 2007 23:59:27 GMT

Hey Steve and Andy,
I'm trying to change from address 1.2 -> 1.3
I'm logged in as user SYSTEM.
Running NET$CONFIGURE and rebooting:
$ SHOW NETWORK shows address 1.2
Running the NET$CONFIGURE script again
I see the the default option is [1.3].

Then I try:
SYSGEN>SET SCSSYSTEMID 1027
SYSGEN>WRITE/CURRENT SCSSYSTEMID 1027
SYSGEN>WRITE/ACTIVE SCSSYSTEMID 1027
and then:
SYSGEN>SHOW SCSSYSTEMID
... this shows value 1027
SYSGEN>exit
$SHOW NETWORK => 1.2
Reboot...
$SHOW NETWORK => 1.2
SYSGEN>SHOW SCSSYSTEMID
...1026
So I don't know what to do next.
Is this not the conventional way to change
the DECNet address?
-dB

Re: Trying to change DECNet address on upgraded system.

Fritz Hummel — Thu, 22 Feb 2007 00:56:40 GMT

Hi !

Did you modify the address in SYS$SYSTEM:MODPARAMS.DAT ?

Re: Trying to change DECNet address on upgraded system.

Steven Schweda — Thu, 22 Feb 2007 00:59:15 GMT

There's a section in the FAQ on changing a
node's name, which might be helpful.

Not having tried this (in living memory,
anyway), I'd expect to have to make both
changes (address in its permanent data base,
SCSSYSTEMID in its permanent data base), and
_then_ reboot.

No bets.

Re: Trying to change DECNet address on upgraded system.

dB LEE — Thu, 22 Feb 2007 03:02:24 GMT

Steve, I've seen that FAQ and will take a try
at the instructions there. Meanwhile:
I found and edited SCSSYSTEMID and SCSNODE in MODPARAMS.DAT. I then located ALPHAVMSSYS.PAR and checked it with a hex editor. It has the original node name and address. I then repeated my previous activity of changing the values within SYSGEN> and checked it again to see if any changes were made: nope.
I repeated the NET$CONFIGURE process and reboot. Still no change!
Next I'll try the FAQ....

Re: Trying to change DECNet address on upgraded system.

Joseph Huber_1 — Thu, 22 Feb 2007 03:44:49 GMT

>SYSGEN>SET SCSSYSTEMID 1027
>SYSGEN>WRITE/CURRENT SCSSYSTEMID 1027
>SYSGEN>WRITE/ACTIVE SCSSYSTEMID 1027

These commands certainly do not update ALPHAVMSSYS.PAR .
USE CURRENT
SET SCSSYSTEMID 1027
(evtl. SET SCSNODE "newname")
WRITE CURRENT
would do it.

Re: Trying to change DECNet address on upgraded system.

Joseph Huber_1 — Thu, 22 Feb 2007 03:54:09 GMT

To explain:
SYSGEN apparently does not complain about the wrong syntax, but in fact writes something like DEFAULT.PAR, not the file You expect.

And making the change to modparams.dat is of course a good thing, but becomes effective only after AUTOGEN !

Re: Trying to change DECNet address on upgraded system.

Robert Gezelter — Thu, 22 Feb 2007 07:22:33 GMT

dB,

You need to do both steps:
- change the DECnet node number in the DECnet stack (NET$CONFIGURE)
- change the SCSSYSTEMID (and write it back)

You will then need to reboot. Be careful to check the SYSGEN help text for SCSSYSTEMID so that you are clear on computing the new value of SCSSYSTEMID.

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

Re: Trying to change DECNet address on upgraded system.

Andy Bustamante — Thu, 22 Feb 2007 13:12:03 GMT

Another thought, is this system part of a cluster? In an OpenVMS cluster the DECnet address and node name are unique paired values. You'll want to change these together or reboot the entire cluster.

See the current version of the VMS FAQ at http://www.hoffmanlabs.org/vmsfaq/vmsfaq_007.html#mgmt9 for more details.

Andy