Before installing WebSphere ESB you
should be aware of the compatibility issues with some other WebSphere products.
WebSphere Application Server
WebSphere ESB can
be installed on the same machine as any version of WebSphere Application Server.
You can install it separately or, if you have WebSphere Application Server,
Version 6.0.x installed, you can choose to extend it to have WebSphere ESB capability.
If you do this your existing WebSphere Application Server will
be upgraded to WebSphere Application Server Network
Deployment, Version 6.0.2. during the installation.
WebSphere Process Server and
WebSphere Business Integration Server
WebSphere ESB cannot
be installed on top of any version of WebSphere Business Integration Server
or WebSphere Process Server.