The term cluster gateway connection refers to the link from a local Broker (in the local cluster) to a remote Broker (in the remote cluster) that enables two clusters to exchange documents. A cluster gateway connection refers to an uni-directional link from one cluster to another. To create this link, two Brokers, one from each cluster, are designated to communicate with one another.

A cluster gateway consists of multiple cluster gateway connections that allow message flow from the local cluster to a remote cluster. To form a cluster gateway, you must create and configure a cluster gateway on each of these Brokers.

A cluster gateway pair refers to a pair of cluster gateways that allow bi-directional message exchange between two clusters. A cluster gateway will not function properly until all the Brokers have at least one outgoing cluster gateway connection.

A cluster gateway Broker performs functions similar to those performed by a Remote Broker object in a cluster. In this capacity, the local cluster gateway Broker:

Unlike a Remote Broker object, a cluster gateway Broker requires an administrator to explicitly specify which document types it can "forward to" and "receive from" the remote cluster. The cluster gateway Broker enforces these permissions on the documents that pass through it.