Research and Implement of Router in Logging Networks
Chen Tian-qi · Beijing Youdian Xueyuan xuebao · 2010
A lightweight router using optimized methods is proposed to meet the requirements of real-time and reliable transmission in logging networks.In the router,the point-to-point protocol is simplified for three states and five events in state machine,and the number of escape characters will be reduced to improve transmission efficiency.The memory of link frame is pre-allocated with the maximum header of protocol data unit to decrease movement of buffered data.A low-complexity method based on linear static routing table is designed to fast lookup.The forwarding engine driven by direct memory access controller in hardware timer can fast process Internet protocol packet.Experiment shows that the forwarding delay and jitter is low and the router is stable and efficient for logging networks.