A REN is a Research and Education Network that provides data communications networks and services to the research and education communities.
A National REN or simply NREN is responsible, on a national basis, for the provision of data communications networks and services to the research and education community of its country. It will connect to other networks at regional levels
(Fig. 1). It is usually distinguished by support for a high-speed backbone network, often offering dedicated channels for individual research projects.
A State REN such as the OSUN-REN is a subset of the National REN, while a City REN such as IFE-REN is a subset of the OSUN-REN.