Resilient Packet Ring (RPR) is a network topology being developed as a new standard for fiber optic rings. The Institute of Electrical and Electronic Engineers (IEEE) began the RPR standards (IEEE 802.17) development project in December 2000 with the intention of creating a new Media Access Control layer for fiber optic rings. The IEEE working group is part of the IEEE's local area network (LAN) and metropolitan area network (MAN) Committee. Fiber optic rings are widely deployed as part of both MANs and wide area networks (WANs); however, these topologies are dependent on protocols that aren't optimized or scalable to meet the demands of packet-switched networks. The working group intends to actively promote RPR as a technology for the networking market as a whole, and as a technology to enable connectivity among various computing and telecommunications devices. The working group will specify an RPR access protocol and physical layer interfaces to enable high-speed data transmission in a fiber optic ring topology. Among the issues the RPR working group is addressing are bandwidth allocation and throughput, speed of deployment, and equipment and operational costs.
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