WebSphere Application Server Version 6.1 is interoperable with other WebSphere Application Server versions under certain conditions.
See Overview of migration, coexistence, and interoperability and Premigration considerations.
WebSphere Application Server Version 6.1 is generally interoperable
with WebSphere Application Server Version 5.x and Version 6.0.x. However,
there are specific requirements to address for each version. In general, you
should apply the latest fix level to support interoperability. If this is
not possible, then the following interim fixes can be used to support your
environment.
WebSphere Application Server Version
6.1 is generally interoperable with WebSphere Application Server Version 5.x
and Version 6.0.x. However, there are specific requirements to address for
each version. In general, you should be at the most recent group PTF level
to support interoperability.
WebSphere Application Server
Version 6.1 is generally interoperable with WebSphere Application Server Version
5.x and Version 6.0.x. 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 take the following steps:
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.