基于RSVP-TE的有向泛洪IRWA算法研究  

Research on RSVP-TE-based directed flooding IRWA algorithm

作　　者：赵继军[1] 郭昆[1] 冯楠[1] 张凯[1] 

机构地区：[1]河北工程大学信息与电气工程学院,河北邯郸056038

出　　处：《光通信研究》2013年第5期8-11,共4页Study on Optical Communications

基　　金：河北省自然科学基金资助项目(F2010001045);河北省教育厅重点项目(ZH2012020)

摘　　要：为了优化透明光网络中IRWA(基于物理损伤模型的路由波长分配)算法性能,通过分析多种物理损伤特点,构建了一种可替代经典模型的简化损伤模型,在此基础上提出一种基于RSVP-TE(资源预留协议-流量工程)的有向泛洪IRWA算法,即KDF-IRWA算法,该算法令源节点通过多条不同的备选路径向目的节点发送PATH(路径)消息包,这些PATH消息包各自独立收集所选路径中各个链路的路径信息,并在目的节点汇聚、计算和比较,避免了经典算法中因首次建路失败而引起的重发包,提高了算法的效率。仿真结果表明,该算法能够有效降低算法时间,提高建路成功的概率,降低网络阻塞率。To optimize the performance of the Routing and Wavelength Assignment （RWA）algorithm based on a physical im-pairment model for optical （transparent）networks,this paper constructs a simplified impairment model by analyzing the fea-tures of multiple physical impairments and proposes a directed flooding RWA algorithm based on Resource Reservation Proto-col-Traffic Engineering （RSVP-TE）,i.e.KDF-IRWA algorithm,which allows the source node to send PATH packets to the destination node through multiple candidate paths.These PATH packets independently collect the path information of various links in the selected path,which converge at the destination node and is calculated and compared,thus avoiding packet re-send-ing arising from the failure in path setup for the first time in the classical algorithms and improving the efficiency of the algo-rithm.The simulation results indicate that this algorithm can effectively reduce the time,increase the probability of success in path setup and reduce network blocking rate.

关 键 词：光网络 物理损伤 路由波长分配算法 资源预留协议 泛洪路由策略 

分 类 号：TN929.11[电子电信—通信与信息系统]