The Jumpstart Enterprise Toolkit is the name given to the Jumpstart Framework, which provides a set of helper scripts to simplify the use of Jumpstart for the installation of Solaris 10 and below on both SPARC and x86 servers.
JET depends on Jumpstart, which is the underlying technology used for installing Solaris 10 and below. Solaris 11 has a new and improved installation methodology, and uses AI (Automated Installer), details of which can be found here.
In a nutshell, JET provides a wrapper around Sun's installation technology to greatly simplify the provisioning of Solaris 10 and below using Jumpstart.
After installing JET on you SPARC or x86 based Jumpstart server, you can:
The main JET framework is supplied in a single SVR4 package called SUNWjet. This package contains everything necessary to do a standard Solaris installation using either bootp or dhcp.
Additional functionality is provided by additional modules, which are supplied in SVR4 package format as well. Common additional packages include:
JET User Guide (The complete user guide)