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准确地测量网络的性能是保证网络高性能运行的前提,针对SDN(software-defined networking)的网络架构提出一种集散式网络性能测量方式——CD(centralized-distributed)网络性能测量方式.该方式以集中式的控制模式实现对测量实体的统一化管理,以分布式的测量方式实现对网络流量分散化处理,使SDN能更灵活地调整网络结构,平衡网络流量,避免网络拥塞,提高网络性能.仿真实验证明了CD测量方式可以准确的测量出网络中的数据流,并且具有较高的带宽利用率和较短的时延,从而验证了此测量方式的适用性和对网络流量处理的高效性.
Accurately measuring the performance of the network is the premise of guaranteeing the high performance of the network. Based on the network architecture of SDN (software-defined networking), this paper proposes a centralized network performance measurement method called centralized network (distributed-network) The centralized control mode to achieve the unified management of measurement entities, distributed measurement methods to achieve decentralized network traffic processing, SDN can be more flexible to adjust the network structure, balance network traffic, to avoid network congestion and improve network performance Simulation results show that the CD measurement method can accurately measure the data flow in the network, and has high bandwidth utilization and short delay, thus verifying the applicability of this measurement method and efficient processing of network traffic Sex.