Supporting multiple classes of services in IP over WDM networks

摘要: We consider the next generation optical Internet, where direct communication channels between IP entities are provided through an all-optical WDM layer. Since current provides only best effort service, supporting quality of service (QoS) has become a crucial issue. propose simple, yet efficient priority scheme to support basic QoS at layer Internet. Unlike existing approaches that depend on buffers (queues) and scheduling algorithms (e.g., fair queuing), our does not mandate any buffer in order differentiate services. The proposed is based concept using offset time control (set-up) packet corresponding data burst as switching (OBS). More specifically, by assigning different times classes, it possible for higher class be isolated from lower classes. quantify required isolation, analyze blocking probability each class.