协议无关的数据中心网络源路由机制研究

摘要

传统数据中心网络己经不能满足当前大规模网络和云计算架构的需求, 传统数据中心网络的路由策略会导致转发单元的臃肿; 同时当规模增大时传统网络中的拓扑管理策略也不再适用. 协议无感知转发技术是软件定义网络中转发平面的一种创新技术. 本文结合源路由和协议无感知转发技术, 提出两种数据中心网络的关键技术: 首先,设计一种协议无关的源路由机制, 从而简化转发单元; 其次, 提出一种主机和控制器间协作的拓扑管理算法, 从而减少探测包的冗余. 最后, 本文在数据中心网络中实现了以上技术, 实验结果表明本文提出的源路由机制可以有效降低转发单元的流表规模, 拓扑管理策略可以极大地减少探测包的冗余.%Traditional Data Center Network (DCN) cannot satisfy large-scale networks and cloud-oriented infrastructure. Routing policies in traditional DCN complicate the forwarding elements and the topology management is inflexible in large-scale DCN. Protocol Oblivious Forwarding (POF) is a groundbreaking forwarding plane technology. In this study, we proposed two technologies of DCN. We designed extremely simple routing mechanism with POF. Forwarding elements of DCN can process packets easily using simple source routing protocol. Furthermore, we designed a cooperative topology management strategy to reduce redundancy of probe packets. We implemented our technologies in POF-based DCN and conduct some experiments. Results demonstrate that our routing mechanism can effectively simplify the forwarding elements and our topology management strategy can reduce the probe packets redundancy.