基于SDN的云计算大二层网络ARP流量优化研究

Research on Optimization of ARP Traffic of Large Layer 2 Network in Cloud Based on SDN

云计算大二层技术的提出是为了实现跨数据中心的虚拟机迁移,保障数据中心数据高可用性,但是传统二层网络的先天缺陷,导致二层的规模不能太大,否则会产生广播风暴,进一步降低网络性能,导致网络波动和延迟增高。笔者根据云数据中心的大二层、网络虚拟化、广播报文泛洪等特点,设计一种避免广播报文泛洪的处理机制,避免广播报文在网络中泛洪,有效降低了网络链路的带宽负载和通信时延。

The second layer of cloud computing technology is to realize the migration of virtual machines across the data center,data center security data availability,but the traditional two layer network of congenital defects,the size of the two layer can not be too large,otherwise it will further reduce the network broadcast storm can lead to increased volatility and network delay.According to the characteristics of cloud data center,such as the second layer of the cloud data center,network virtualization and broadcast message flooding,we design a processing mechanism to avoid broadcasting message flooding,so as to avoid broadcasting messages flooding in the network,and effectively reduce the bandwidth load and communication delay of the network link.