Several competing solutions are emerging in support of client/server communications for distributed object platforms. In July 95, Object Management Group (OMG) has published two interoperability protocols, known as Internet Inter-ORB Protocol (IIOP) and DCE Common Inter-ORB Protocol (DCE CIOP) both described in the CORBA 2.0 specification from OMG. In the meanwhile, other standard-based solutions have been proposed, for instance: the 00DCE platform from HP based on DCE RPC specification from OSF.

In this paper, two among these solutions (CORBMIIOP and 00DCE/DCE RPC) are compared regarding their internal protocol behaviors and an original solution - called GRIP for Generic Remote Invocation Protocol - obtained by combination is described. GRIP protocol inherits both the robustness of DCE RPC and the simplicity of HOP. It also preserves compatibility with those solutions which enables interoperability without use of gateways.