FACILITATING CONGESTION CONTROL IN A NETWORK SWITCH FABRIC BASED ON GROUP AND AGGREGATE TRAFFIC RATES

摘要

A system for communicating packets through a network switch fabric is described. At an aggregation point in the network switch fabric, the system segregates packet flows from multiple sources into a set of quality-of-service (QoS) buckets. The system also associates packet flows from the multiple sources with a global QoS bucket. The system monitors traffic rates for each QoS bucket in the set of QoS buckets and the global QoS bucket. The system determines a state for each QoS bucket by comparing a traffic rate for the QoS bucket with state-specific thresholds. The system also determines a state for the global QoS bucket by comparing a traffic rate for the global QoS bucket with state-specific global thresholds. When a packet is received for a given QoS bucket, the system performs an action based on a state of the given QoS bucket and a state of the global QoS bucket.