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Openvms7.2-1:Virtual IP configuration

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Learn_1
Regular Advisor

Openvms7.2-1:Virtual IP configuration

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
4 REPLIES
Willem Grooters
Honored Contributor
Solution

Re: Openvms7.2-1:Virtual IP configuration

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...)
Willem Grooters
OpenVMS Developer & System Manager
Learn_1
Regular Advisor

Re: Openvms7.2-1:Virtual IP configuration

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

Re: Openvms7.2-1:Virtual IP configuration

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.
Willem Grooters
OpenVMS Developer & System Manager
Mike Naime
Honored Contributor

Re: Openvms7.2-1:Virtual IP configuration

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.
VMS SAN mechanic