Parallel Switch System with QoS Guarantee for Real-Time Traffic

This paper studies the load-balancing algorithm and quality of service(QoS) control mechanism in a 320Gb/s switch system, which incorporatesfour packet-level parallel switch planes. Eight priorities for bothunicast and multicast traffic are implemented, and the highest prioritywith strict QoS guarantee is designed for real-time traffic. Throughperformance analysis under multi-priority burst traffic, we demonstratethat the load-balancing algorithm is efficient, and the switch systemnot only provides excellent performance to real-time traffic, but alsoefficiently allocates bandwidth among other traffic of lower priorities.As a result, this parallel switch system is more scalable towards nextgeneration core routers with QoS guarantee, as well as ensures in-orderdelivery of IP packets.