Does Jboss AS Clustering Quality Automatically Replicate the w760> Web Application Session?

The following are related queries when JBoss has a Spring web application with internal Hibernate and load balancing is done by Apache Mod-jk.

• Does JBoss AS Spring clustering support web-based session replication?
• If it supports, will this be done automatically when configuring the JBoss cluster or should it be launched through explicit configuration of the JBoss cache?
• If the synchronous or asynchronous replication option is configured programmatically, or there is some way in which it can be configured using XML clustering services, where applicable.
• How do we handle a passivated session and how does it behave in the event of a failure?
• Are there any specific links besides "JBoss High Availability Enterprise services with JBoss AS Clusters" that are evaluated along with your experience.