Service Integration Bus
The service integration bus (SIB) is the underlying messaging provider for the default messaging JMS provider, replacing the embedded messaging provider that was supported in WAS V5.
The SIB presents cooperating messaging resources to applications as a single entity.
A bus is defined at the cell level. Generally no more than one bus will be required within a cell. However, a cell can contain any number of buses.
Defining a bus within a cell has no run time impact on any of the components running within a cell. It is not until members are added to a bus that any of the run time components within an appserver are affected.
Bus members
A bus member is an appserver, or cluster of appservers, that has been added as a member of a bus.
Adding servers to a bus automatically defines a number of resources on the bus member, including the messaging engine.