Based on the configuration, there are four to 10 Ethernet ports on the Replication Engine.
Administrator access to the Oracle MaxRep graphical user interface (GUI)
Software installation and upgrades
Management communication with other Replication Engines
In an asynchronous replication, the transfer of replicated data and metadata between the source Replication Engine and the target Replication Engine
Communication between Replication Engines and Oracle FS Systems
Communication between Replication Engines and application servers