Task 2: Change the Default IP Address Base (Optional)

You may need to change the default IP address base of the XC private networks if the default values conflict with another IP address base at your site. The IP address base is defined in the base_addr.ini file.




	Important Note About HP Server Blades and Enclosures: If the hardware configuration contains HP server blades and enclosures, the IP address base is different, and it is defined in the `base_addrV2.ini` file. For more information, see the HP XC Systems With HP Server Blades and Enclosures HowTo, which is available at the following Web site: http://www.docs.hp.com/en/highperfcomp.html

Follow this optional procedure to change the default IP address base for the XC private networks:

Begin this procedure as the root user on the head node.
Use the text editor of your choice to edit the /opt/hptc/config/base_addr.ini file.
The default contents of this file is similar to this:
Base = 172 nodeBase = 172.20 cpBase = 172.21 swBase = 172.20.65 icBase = 172.22 otherBase = 172.23.0 netMask = 255.224.0.0
The following describes the parameters in this file:
Base
The common first octet that is used for all base IP addresses.
nodeBase
The base IP address of all nodes.
cpBase
The base IP address of the console branch.
swBase
The base IP address of the Ethernet switches. The interconnect switch modules are based off of this value, 172.20.66.*.
icBase
The base IP address of the interconnect.
otherBase
The base IP address to be used for other devices. This value is currently not used by the discovery process.
netMask
The netmask that is used for all connections on the administration network.
Follow these guidelines if you make changes to the base_addr.ini file:
- Change only the first octet of a base address; 172 is the default.
- Use the same first octet for all base IP addresses.
- Use a private domain as defined by the RFC.
Save your changes and exit the file. Because this is a read-only file, the method by which you save the file depends upon the text editor you used.
For example, if you are using the vi text editor, enter :w! to save changes to a read-only file.

Proceed to “Task 3: Run the cluster_prep Command to Prepare the System” .

Task 2: Change the Default IP Address Base (Optional)

Technical documentation

» Table of Contents

» Glossary

» Index