基于MPLS的空间信息网络路由策略

摘要

In order to solve the problems of prolonged satellite link networking, difficult integration and interoperability between IP technology and ATM technology in space information network, a routing strategy for space information network is proposed based on the satellite Multi-Protocol Label Switching (MPLS) networking scheme.IP packet and ATM cell are encapsulated in a unified MPLS format, which integrates IP and ATM technology.In order to select the transmission path reasonably, a path selection algorithm based on hops and bandwidth utilization is proposed.Results of OPNET simulation platform show that compared with OSPF satellite network routing strategy, this strategy can effectively reduce the transmission delay of the network.%针对空间信息网络中卫星链路组网时延长、IP技术与ATM技术体制难以融合与互通的问题, 基于卫星多协议标签交换 (MPLS) 组网方案, 提出一种空间信息网络路由策略.将IP数据包和ATM信元采用统一的MPLS格式进行封装, 融合IP与ATM 2种技术体制, 在融合过程中为合理选择传输路径, 提出一种基于跳数和带宽利用率的路径选择算法.通过OPNET仿真平台进行验证, 结果表明, 与OSPF卫星网络路由策略相比, 该策略能够有效降低网络的传输时延.