摘要
Google公司成功的将SDN的概念引入其数据中心广域网WAN的网络构建,采用控制层面与数据转发层面分离的思想,以Quaga协议栈为基础构建SDN控制器,并通过运行BGP和ISIS同步数据中心之间的链路;以通用商用交换机为原型实现openflow交换机,配置交换机产生基于路由的LPM路由表和基于流量工程(TE)的ACL表,实现基于业务的隧道(Tunnel)选取和流量量化分摊。对Google公司的采用SDN搭建的B4网络进行了分析和研究,针对如何借鉴该数据中心网络搭建经验进行初步研究。
The concept of SDN is successfully introduced into the network construction of data center WAN by Google, and the idea of separating the control level from data forwarding level is adopted to construct SDN controller based on Quaga protocol stack. The link information is synchronized by operation of BGP and ISIS, and the openflow switch constructed by common commercial switch. Routing-based LPM and TE -based ACL are acquired through configured switch, thus to achieve the tunnel selection based on operation and traffic apart by quantity. Analysis and research are done on Google B4 constructed by SDN, and a pilot study on how to learn from the experience of the mentioned data center network construction is also given.
出处
《通信技术》
2015年第12期1432-1436,共5页
Communications Technology
