基于SDN的高可用MANET模型设计

Design of High Available MANET Model Based on SDN

摘要: 针对网络资源可用性低的问题，提出一种基于SDN的高可用MAENT结构模型。模型引入动态哈希算法缓解控制平面和数据平面的拓扑失配问题，利用前缀匹配树实现拓扑失配的局部修复，通过修改南边界APIs函数的规则提高网络兼容性。利用Mininet、FlowVisor和GT-ITM等开源软件设计了测试平台，对模型连通度、时延和吞吐量等可用性指标进行了仿真分析。结果表明，新模型连通度提高了9%，时延降低了60%，吞吐量提高了2.3 Mbps，一定程度上改善了网络资源可用性。

Abstract: A higher available mobile ad hoc networking (MANET) model was proposed based on software defined network (SDN), aiming at the issue of the network with low available resources. The model remitted the topology mismatching problem through introducing dynamic Hash algorithm, realized local topology mismatching reparation by prefixes matching tree, and improved network compatibility via modifying southern boundary application programming interfaces (APIs) functions running rule. Moreover, corresponding test platform was developed by open source software like Mininet, FlowVisor and GT-ITM. Three performance indicators called connection degree, delay and throughput were analyzed by simulation. Results show that, for the proposed model, connection degree increases about 9%, delay decreases about 60%, and throughput improves 2.3 Mbps, all of which make network resources availability better to some extent.