topic Re: Openvms7.2-1:Virtual IP configuration in Operating System - OpenVMS

Openvms7.2-1:Virtual IP configuration

Learn_1 — Tue, 30 Sep 2003 07:50:07 GMT

Have AS4100 server 7.2-1 with a real IP10.150.0.90.I want to configure a virtual IP 10.140.0.90 to this server to fulfill some software requirements.How can i configure this?
detailed description in this regard will help to resolve this issue.
Thanks

Re: Openvms7.2-1:Virtual IP configuration

Willem Grooters — Tue, 30 Sep 2003 08:12:53 GMT

What do you mean by 'virtual IP address'?
You can easily add more addresses on an NIC:

tcpip ifconfig alias

in your case, assuming your NIC is WE0:

$ tcpip ifconfig WE0 alias 10.140.0.90

If you use another bitmask than (in this case) 255.0.0.0 (=

/8) you should add the subnet mask:

netmask

or just add / to the alias address.

This address can be pinged if correctly set up.
Don't forget
(You can also add more addresses in one go, using aliaslist parameter.

For greater detail look into TCPIP HELP IFCONFIF PARAMETERS (you need a scrollable interface, or redirect output to a file, it's UNIX like...)

Re: Openvms7.2-1:Virtual IP configuration

Learn_1 — Tue, 30 Sep 2003 08:18:00 GMT

Thanks for your reply.
if i do following then what will happen.
set host jack /address:10.140.0.90

Re: Openvms7.2-1:Virtual IP configuration

Willem Grooters — Tue, 30 Sep 2003 12:27:31 GMT

SET HOST is a decnet command.
On 7.3-1 (the only one I've access to) does not accept /ADDRESS option (see HELP SET HOST). Either you do:

SET HOST JACK/TELNET=

or just

TELNET

What exactly is the requirement (I _should_ have asked before, I know...) If it just is to access the very same machine, IP address 127.0.0.1 (localhost) will do as well. In that case you don't have do do anything.
To check whether it works (on that interface) acess it from another machine in that network and just ping 10.140.0.90. It should reply.

Re: Openvms7.2-1:Virtual IP configuration

Mike Naime — Tue, 30 Sep 2003 19:04:32 GMT

I think that you are trying to describe using the CLUSTER ALIAS. This allows you to setup an Alias IP address that the cluster can move between cluster nodes.
-

If you use the @TCPIP$CONFIG program for setting your TCPIP addresses, after you configure your real IP adresses, it asks you about configuring the Cluster address. you would use this to configure your Cluster Alias the easy way.
-

The harder way is to go into TCPIP, and manually configure it with /addr=.../CMASK=...etc.