Transport Bridge: Multiple Transports
You can also configure a bridge with several transports in a set. (In contrast, previous bridge examples, the bridge forwards between two transport sets, each containing only one transport.)
For example, the following diagram shows only one multicast group in set B, but consider that an enterprise might communicate over several such multicast groups. To forward messages on all of them, the bridge requires a separate transport for each multicast send group. You can configure the bridge to include all of those multicast transports in transport set B.
A bridge does not forward messages among the several transports in a transport set, only from the transport set where the message arrives, to all the transports in all the other sets. Consider the implications in the context of the current example.
- When a message arrives on T1, the bridge forwards it on all the transports in transport set B.
- When a message arrives on any one of the multicast transports in B, the bridge does not forward the message on any of the other multicast transports in B. It forwards only on T1, which is in set A.
The transports in a set need not be of the same transport protocol.