IS-IS路由性能监测系统设计与实现
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摘要
随着互联网上各种增值业务的不断涌现,网络维护人员和运营商更加关注网络的稳定性和可靠性,这与各个自治域内路由的基础设施和数据包的转发行为息息相关。因此通过监测网络路由性能而得到的路由监测结果数据,可以为运营商实时了解当前的网络状况提供保障,并指导他们有效部署和运维网络,及时发现网络故障。
分布式路由性能监测系统采用被动监测的方案,每台监测机通过运行路由模拟软件,与真实网络中的路由器进行通讯,负责监测BGP、OSPF、RIP及IS-IS等路由协议,从而获得各类路由协议控制范围内的网络拓扑和路由性能指标。
论文主要阐述了分布式IS-IS路由性能监测子系统的设计、实现及部署方案。该子系统在逻辑上划分为两个模块——监测机和管理机。监测机负责监测一个或两个区域的二级拓扑,通过实时更新所属区域的链路状态数据库,向管理机发送监测的结果数据。管理机通过整合各个监测机的结果数据,得到整个AS域内的二级拓扑。该子系统根据链路状态路由协议的选路特点,分析IS-IS路由协议交互过程中的数据包,利用路由变更和路由拓扑整合算法真实动态呈现网络拓扑及其路由变化,并在实验网上进行了测试,验证了系统的功能和性能,其监测结果可以为网络运维提供重要依据。
论文首先介绍了本课题的研究背景及主要内容,概述与系统相关的技术背景,其中包括IS-IS路由协议的数据包格式和工作流程,并对路由监测领域的现状进行了阐述。论文综述了路由监测系统的体系架构及要达到的主要目标,详细阐述了IS-IS路由监测系统设计方案,并利用实验对该监测方案进行了证实。最后论文提出了路由监测系统下一步的工作进展。
With the advent of value-added services in the IP network, such as VoIP and distributed gaming, which require high degree of performance and stability, network operators are now paying considerable attention to the performance of the routing infrastructure. From the result set of routing performance, they can track the network connectivity and traffic loads easily, deploy and maintain the network efficiently, and resolve the trouble quickly.
We implement this system as a passive measurement. Each monitor node pretends to be a router in order to communicate with other routers in the network. By monitoring different adaptive routing protocols, such as BGP、OSPF、RIP and IS-IS, this system gets the network topology within different ranges and routing performance parameters.
In this paper, we present detailed architecture and implementation of the system for one of the widely used intra-domain routing protocols—IS-IS. ISIS-Monitor has two components, separating several monitor nodes and one management node. Every monitor node is responsible for monitoring one or two areas' two-level topology, by updating renewed link state database, it sends result to the management node, and the management node is responsible to merge and display the result from all the monitor nodes. The system has been successfully deployed on our lab testbed, where the functionality and stability are evaluated. The real-time and accurate analysis provides the facilities for network maintenance.
Firstly, this paper introduced the research background and content; Secondly, it described the routing protocol related knowledge and the development of the route monitoring technology; Then it summarized the goal of our system, addressed the route monitoring system to track two-level topology, and analyzed the testcases for different scenes. Finally, it indicated expectations of the system.
分布式路由性能监测系统采用被动监测的方案,每台监测机通过运行路由模拟软件,与真实网络中的路由器进行通讯,负责监测BGP、OSPF、RIP及IS-IS等路由协议,从而获得各类路由协议控制范围内的网络拓扑和路由性能指标。
论文主要阐述了分布式IS-IS路由性能监测子系统的设计、实现及部署方案。该子系统在逻辑上划分为两个模块——监测机和管理机。监测机负责监测一个或两个区域的二级拓扑,通过实时更新所属区域的链路状态数据库,向管理机发送监测的结果数据。管理机通过整合各个监测机的结果数据,得到整个AS域内的二级拓扑。该子系统根据链路状态路由协议的选路特点,分析IS-IS路由协议交互过程中的数据包,利用路由变更和路由拓扑整合算法真实动态呈现网络拓扑及其路由变化,并在实验网上进行了测试,验证了系统的功能和性能,其监测结果可以为网络运维提供重要依据。
论文首先介绍了本课题的研究背景及主要内容,概述与系统相关的技术背景,其中包括IS-IS路由协议的数据包格式和工作流程,并对路由监测领域的现状进行了阐述。论文综述了路由监测系统的体系架构及要达到的主要目标,详细阐述了IS-IS路由监测系统设计方案,并利用实验对该监测方案进行了证实。最后论文提出了路由监测系统下一步的工作进展。
With the advent of value-added services in the IP network, such as VoIP and distributed gaming, which require high degree of performance and stability, network operators are now paying considerable attention to the performance of the routing infrastructure. From the result set of routing performance, they can track the network connectivity and traffic loads easily, deploy and maintain the network efficiently, and resolve the trouble quickly.
We implement this system as a passive measurement. Each monitor node pretends to be a router in order to communicate with other routers in the network. By monitoring different adaptive routing protocols, such as BGP、OSPF、RIP and IS-IS, this system gets the network topology within different ranges and routing performance parameters.
In this paper, we present detailed architecture and implementation of the system for one of the widely used intra-domain routing protocols—IS-IS. ISIS-Monitor has two components, separating several monitor nodes and one management node. Every monitor node is responsible for monitoring one or two areas' two-level topology, by updating renewed link state database, it sends result to the management node, and the management node is responsible to merge and display the result from all the monitor nodes. The system has been successfully deployed on our lab testbed, where the functionality and stability are evaluated. The real-time and accurate analysis provides the facilities for network maintenance.
Firstly, this paper introduced the research background and content; Secondly, it described the routing protocol related knowledge and the development of the route monitoring technology; Then it summarized the goal of our system, addressed the route monitoring system to track two-level topology, and analyzed the testcases for different scenes. Finally, it indicated expectations of the system.
引文
[1]Martey A..IS-IS网络设计解决方案[M].凡璇,译.北京:人民邮电出版社.2002年.
[2]ISO/IEC 10589:Information technology-telecommunications and information exchange between systems-IS-IS intra-domain routing information exchange protocol for use in conjunction with the protocol for providing the CMNS(ISO 8473)[S],1992.
[3]Callon R.RFC 1195 Use of OSI IS-IS for Routing in TCP/IP and Dual Environments[S].1990.
[4]PERLMAN RADIA.A Comparison Between Two Routing Protocols:OSPF and IS-IS[J].IEEE Network Magazine,1991(9):18-24.
[5]Quagga Routing Suite.http://www.quagga.net
[6]Shaikh A,Goyal M,Rajan R.An OSPF Topology Server:Design and Evaluation[J].IEEE Journal on Selected Areas in Communications.2002-03,20(4):746-755.
[7]Baccelli E,Rajan R.Monitoring OSPF Routing.Integrated Network Management Proceedings[J].2001 IEEE/IFIP International Symposium on.14-182001-05:825-838
[8]邓永平,徐建峰.IGP路由收敛分析及优化[J].电子科学.2005年第4期.
[2]ISO/IEC 10589:Information technology-telecommunications and information exchange between systems-IS-IS intra-domain routing information exchange protocol for use in conjunction with the protocol for providing the CMNS(ISO 8473)[S],1992.
[3]Callon R.RFC 1195 Use of OSI IS-IS for Routing in TCP/IP and Dual Environments[S].1990.
[4]PERLMAN RADIA.A Comparison Between Two Routing Protocols:OSPF and IS-IS[J].IEEE Network Magazine,1991(9):18-24.
[5]Quagga Routing Suite.http://www.quagga.net
[6]Shaikh A,Goyal M,Rajan R.An OSPF Topology Server:Design and Evaluation[J].IEEE Journal on Selected Areas in Communications.2002-03,20(4):746-755.
[7]Baccelli E,Rajan R.Monitoring OSPF Routing.Integrated Network Management Proceedings[J].2001 IEEE/IFIP International Symposium on.14-182001-05:825-838
[8]邓永平,徐建峰.IGP路由收敛分析及优化[J].电子科学.2005年第4期.
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