ABSTRACT
Resilient Packet Ring Technology were developed recognizing the shortcomings in the existing network solutions which are Gigabit Ethernet, SONET/SDH and ATM.
RPR retains the best attributes of SONET/SDH, ATM and Gigabit Ethernet. RPR is optimized for differentiated IP and other packet data services, while providing uncompromised quality circuit voice and private line services. It works in point to point, leniar, ring or mesh networks, providing ring survivability in less than 50milliseconds.RPR dynamically and statistically multiplexes all services into the entire available bandwidth in both directions of the ring while preserving bandwidth and service quality guarantees on a per-cutomer, per-service basis. It does all this at a fraction of the cost of legacy SONET/SDH and ATM solutions.
RPR has a MAC layer technology, being standardized in the IEEE 802.17 workgroup. This employs special reuse to maximize bandwidth utilization, provides a distributed fairness algorithm, and ensures high –speed traffic protection similar to SONET Automatic Protection Switching(APS).
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