一种基于OSPF扩展的预计算QoS路由算法研究  

Research on an OSPF-based Pre-Computational QoS Routing Extension Algorithm

作　　者：张静[1] 冉晓旻[1] 胡捍英[1] 

机构地区：[1]解放军信息工程大学,郑州450002

出　　处：《计算机科学》2006年第7期47-51,共5页Computer Science

基　　金：总装基金项目:"智能计算机网络安全技术研究"(编号:151415020101JB5201)

摘　　要：在一个MPLS域,LSPs的建立需要QoS路由协议分发QoS相关的信息和执行QoS路径选择,但是传统的OSPF不支持QoS路由。本文提出并详细讨论了一种OSPF-QoSR路由机制,它是对OSPF路由协议的扩展,基于网络的动态可用带宽资源和流的QoS请求来决定流的QoS LSPs。仿真证明,该机制在丢包率、链路利用率、延时方面的性能优于只考虑最短路径的OSPF。Within a MPLS domain, the setting up of LSPs needs a QoS-aware routing protocol for the dissemination of QoS-related information and the actual QoS path selection. While the original OSPF does not support QoS routing,the OSPF-QoSR routing scheme which is extensions of OSPF has been proposed and discussed in detail in this paper. QoS LSPs for flows are determined based on some knowledge of dynamic bandwidth resource availability in the network as well as the QoS requirements of flows. Simulation results show that the OSPF-QoSR scheme outperforms the OSPF scheme considering only the shortest paths in terms of loss ratio,link utilisation and delay.

关 键 词：MPLS QoS路由 OSPF OSPF-QoSR 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]