Abstract:

Traditional congestion control algorithms identify the network congestion status and make drop decisions mainly according to the information in local forward engines. This paper proposes a new congestion control algorithm called CAGPS based on the awareness of global port status named CAGPS. It takes the congestion status of remote forward engines and their ports into account so that the more reasonable flowcontrol decisions can be made. Thus the o erall throughput of the router will improve. At the end of this paper, we describe the implementation of CAGPS in a core router based on network processors.

Key words: global port status, flow control, congestion control, network processor