基于POF多宿主网络路径选择方法

A Multi-homed Network Path Selection Method Based on Protocol-Oblivious Forwarding

多宿主通过多个接入网络并行使用来提高传输效率,从而为用户带来更优质的服务。目前的多宿主方案采用端到端的路径选择方法,不能在转发过程中通过感知网络的状态来进行动态路径调整,这就会导致不能充分地利用多个路径来提供服务。本文提出一种基于协议无感知转发技术的新型多宿主网络路径选择方法。在该方法中,由于发往多宿主终端的分组中携带多个地址,在每一跳匹配转发表后,将会有多个转发端口,因此可以动态调整转发端口来提高传输效率。本文尝试了不同的端口选择的方法,包括随机选择、轮询选择和根据端口状态进行选择,实验结果表明根据端口的状态进行选择的方法能根据网络的状态动态地调整分组的路径。

Multi-homing improves transmission efficiency by using multiple access networks in parallel, thereby bringing better services to users. The current multi-homing scheme adopts an end-to-end path selection method, and cannot perform dynamic path adjustment by sensing the state of the network during the forwarding process, which will result in the inability to make full use of multiple paths to provide services. This paper proposes a new multi-homed network path selection method based on protocol-free forwarding technology. In this method, since the packet sent to the multi-homed terminal carries multiple addresses, after each hop matches the forwarding table, there will be multiple forwarding ports, so the forwarding ports can be dynamically adjusted to improve transmission efficiency. This article tried different port selection methods, including random selection, polling selection and selection based on port status. The experimental results show that the method of selecting based on port status can dynamically adjust the path of the packet according to the network status.