<protocol> (RRL) Part of Java's Remote Method Invocation protocol. RRL exists in both the RMI client and server. It is used by the stub or skeleton protocol layer and uses the transport layer. RRL is reponsible for transport-independent functioning of RMI, such as connection management or unicast/multicast object invocation.
Try this search on Wikipedia, OneLook, Google
Nearby terms: remote monitoring « Remote Operations Service Element « Remote Procedure Call « Remote Reference Layer » Remote Spooling Communication Subsystem » Remote Write Protocol » removable disk