The L22Pv2.1 Linux version or the L22Pv2.2 Linux version of NetMAX can be installed over an existing Red Hat 6.1 system, but you'll need to answer "Y" to the question "Would you like to install the NetMAX kernel?"

No other version of Red Hat or NetMAX can support an Overlay Installation.

This information assumes that you have NOT upgraded the version of the Linux kernel that comes with your Red Hat installation.

Before you do an overlay installation, you may want to first consider whether you actually need to do an overlay installation, because it does make it quite a bit more difficult to administer your NetMAX product if you do an overlay installation.

You may want to look over the instructions for the Overlay Installation Method in the Installation Manual. If you look at the Post Configuration section, you will notice that you will have to manually maintain the files that NetMAX is allowed to overwrite when doing an Overlay Installation.
address-suppressed