The ERICA Switch Algorithm for ABR Traffic Management in ATM Networks

摘要

We propose an explicit rate indication scheme for congestion avoidance in ATMnetworks. In this scheme, the network switches monitor their load on each link,determining a load factor, the available capacity, and the number of currentlyactive virtual channels. This information is used to advise the sources aboutthe rates at which they should transmit. The algorithm is designed to achieveefficiency, fairness, controlled queueing delays, and fast transient response.The algorithm is also robust to measurement errors caused due to variation inABR demand and capacity. We present performance analysis of the scheme usingboth analytical arguments and simulation results. The scheme is beingimplemented by several ATM switch manufacturers.