How to use package address for outbound traffic

[Robert Tortajada_1]

We need to setup our cluster so that the outbound traffic uses the package IP address and not the node IP address. Can this be done?

Bob T

[Sanjay_6]

Hi Robert,

When you configure the packgae on the cluster you can define the ip forthe package which floats with the package itself. When your users want to use that package they can access the package (login etc) using the package ip and the outbound traffic will also be through that ip only.

the package ip is defined in the package control script and the varibale is
IP[0]=a.b.c.d
SUBNET[0]=a.b.c.0 # Netmask = 255.255.255.0

Here a.b.c.d is the package ip which floats with the package i.e it moves with the package from one node to another.

Hope this helps.

thanks

[Robert Tortajada_1]

Yes, but that is for the inbound traffic. That IP address is aliased to the adapter and the adapter keeps the original "permenant" address.

If I was on the node and telneted out to another box, that box would see me coming from the node's "permenant" address and not the package address.

Bob T

[Animesh Chakraborty]

IP FORWARDING ?http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0x78fdd211e18ad5118ff10090279cd0f9,00.html


Thanks
Animesh

[melvyn burnard]

Robert, to do what you are looking for, you need to have your application software bind() to the floating IP address. This is not always an easy task.
I believe there is a section in the Managing MC/ServiceGuard manual that may be of interest to you :
http://docs.hp.com/hpux/onlinedocs/B3936-90045/B3936-90045.html

Designing Applications to Run on Multiple Systems
-> Bind to Relocatable IP Addresses

HTH

[Christopher Caldwell]

Melvyn is right. The outbound IP is application specific (not MC/SG specific). It's easily doable with modern web servers, sendmail, ftp, etc. Your mileage will vary with other apps. Most "non-Internet specific" apps that I've encountered do a poor job of considering packages like MC/SG and the idea of binding to specific ports.

[Sridhar Bhaskarla]

How to use Floating IP?. Set it up in your application to use it. Most of the time we do not care about outbound traffic. It's the inbound traffic that is to be controlled and is done with the floating IP.

-Sri