Method of and system for physically distributed, logically shared, and data slice-synchronized shared memory switching

• Main Authors: PAL SUBHASIS, EPPLING JOHN L, RAY RAJIB
• Format: Patent
• Language: English
• Published: 31.05.2007
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

An improved data networking technique and apparatus using a novel physically distributed but logically shared and data-sliced synchronized shared memory switching datapath architecture integrated with a novel distributed data control path architecture to provide ideal output-buffered switching of data in networking systems, such as routers and switches, to support the increasing port densities and line rates with maximized network utilization and with per flow bit-rate latency and jitter guarantees, all while maintaining optimal throughput and quality of services under all data traffic scenarios, and with features of scalability in terms of number of data queues, ports and line rates, particularly for requirements ranging from network edge routers to the core of the network, thereby to eliminate both the need for the complication of centralized control for gathering system-wide information and for processing the same for egress traffic management functions and the need for a centralized scheduler, and eliminating also the need for buffering other than in the actual shared memory itself,-all with complete non-blocking data switching between ingress and egress ports, under all circumstances and scenarios.