WebSphere® Application Server Version 8.5 is interoperable with other versions of the product under certain conditions.
This article is about configuration migration, such as migrating deployment managers and federated nodes in a network deployment environment. The Application Migration Toolkit for WebSphere Application Server provides support for migrating applications from previous versions of WebSphere Application Server to the latest product version. For information about migrating applications, read more about the Application Migration Toolkit.
sptcfgRead Overview of migration, coexistence, and interoperability and Premigration considerations. For resources to help you plan and perform your migration, visit Knowledge Collection: Migration planning for WebSphere Application Server.
Interoperability applies to WebSphere administrative actions, administrative communication
and to application client requests. WebSphere Application Server Version 8.5 is generally interoperable
with Version 6.1 and above. You should apply the latest fix level
to support interoperability. In order to interoperate between WebSphere Application Server for z/OS® and a WebSphere Application Server product on a non-z/OS
machine, however, you must follow this procedure.
For web application clients, interoperability is provided by employing the HTTP server plug-in at the highest version of all of the application servers in the cell. For example, a cell comprised of WebSphere Application Server Version 7.0 and Version 6.1 application servers would use a supported HTTP server with a Version 7.0 plug-in. See Technote Web server plug-in policy for WebSphere Application Server for more information.
This information is dynamic and might be augmented by information in technical articles that are available on the IBM® DeveloperWorks WebSphere site. Check the site for the latest information.