一种通过BGP协议获取精确策略路由表的方法

介绍了BGP路由协议的基本内容，提出了一种结合分析BGP全球路由表的AS-PATH属性与APNIC Whois数据库，获得实时精确的地区级策略路由表的方法，最后对该方法进行实现。     

城域网中MPLSL3VPN部署方式的研究

文章立足于目前成熟的MPLS技术，就目前MPLSL3VPN技术在城域网中的部署方式进行论述，分析了自治域内部署MP．IBGP，自治域间部署Back-to—BackVRF、ExternalMP—BGPforVPNv4PrefixExchange、Multi-HopExternaIMP—BGPforVPNv4、MultihopMP—eBGPforVPNv4betweenRRs、Non—VPNTransitProvider这六种MPLSL3VPN实现技术，对跨域MPLSL3VPN部署技术进行了对比分析，并对不同应用情况、不同时期的城域网进行何种部署方式进行了探讨。     

BGP MPLS VPN模块设计与实现

分析了BGP MPLS VPN模块的需求,该模型包括三个主要子模块:LDP模块、转发模块、转发表组装模块,分析发它们的工作原理,提出了模块设计与实现思路,将VRF表、FNT表、IML表三表合并为一个转发表,由操作码决定查询的转发条目,简化了对路由信息的管理,提高了查表效率.     

IPRAN网络核心改造优化方案

IPRAN网络建设初期,由于当时相关规范尚不完善,初期工程时三核心的网络架构已搭建完毕,现按照组网规范要求,需向双核心节点组网方式优化,避免核心层网络中形成大量局间调度,调整核心与业务汇聚设备之间的网络结构,核心节点通过配置业务汇聚设备完成与业务网的对接,业务汇聚设备采用口字型方式与核心设备组网,简化网络结构,增强网络的健壮性。     

Distributed out-bound load balancing in inter-AS routing by random matchings

The Internet is composed of a collection of inter-connected and self-administered Autonomous Systems (ASms). Inter-AS routing is accomplished by having neighboring ASms exchange reachability information via the Border Gateway Protocol. An AS is said to be a transit AS if it allows traffic from other ASms to cross through it. In particular, transit ASms provide transit services for traffic between customer and provider ASms. In this article, we focus on maximizing the utilization of resources at transit ASms. In particular, inter-AS links have been shown to be a bottleneck. To make better use of inter-AS links, we consider the problem of balancing the load among inter-AS links. We refer to this problem as the Balanced-Flow Assignment ProbleM (B-FAPM). We show that the B-FAPM is NP-hard, and thus, likely intractable. We then present a heuristic protocol, the Balanced-Flow Assignment ProtocoL (B-FAPL), that balances the out-bound traffic loads on inter-AS links. We show via simulation that the B-FAPL effectively balances outgoing traffic over inter-AS links. Our solution is fully distributed and uses random matchings to assign in-bound flows to out-bound inter-AS links. Ravi Musunuri received his Bachelors degree from R. V. College of Engineering, Bangalore, India, in 1998, and his Masters and Ph.D. degrees in the Computer Science Department from the University of Texas at Dallas in 2002 and 2006, respectively. He is currently with Cisco Systems, San Jose. His research interest broadly is in Computer Networks area with emphasis on Internet routing, Wireless Sensor Networks, and Content Delivery Networks. Jorge Arturo Cobb received his B.S. degree in computer science with highest honors from the University of Texas at El Paso in 1987, and M.A. and Ph.D. degrees, both in computer science, from the University of Texas at Austin in 1989 and 1996, respectively. He is currently an associate professor in the Department of Computer Science at the University of Texas at Dallas. His main research interest is in computer networking, with an emphasis on scheduling for quality of service guarantees and mobile computing.     

Graphical processing unit‐based parallelization of the Open Shortest Path First and Border Gateway Protocol routing protocols

Exponentially growing number of devices on Internet incurs an ever‐increasing load on the network routers in executing network protocols. Parallel processing has recently become an unavoidable means to scale up the router performance. The research effort elaborated in this paper is focused on exploiting the modern trends of general‐purpose computing on graphics processing unit computing in speeding up the execution of network protocols. An additional benefit is off‐loading the CPU, which can now be fully dedicated to the packet processing and forwarding. To this end, the Shortest Path First algorithm in the Open Shortest Path First protocol and the choice of the best routes in the Border Gateway Protocol are parallelized for efficient execution on Compute Unified Device Architecture platform. An evaluation study was conducted on three different graphics processing units with representative network workload for a varying number of routes and devices. The obtained speedup results confirmed the viability and cost‐effectiveness of such an approach. Copyright © 2014 John Wiley & Sons, Ltd.     

AS级拓扑被动测量点的测量完整性评价

本文基于AS路径符合"无谷模型"这一公认的假设推导理论上的测量结果,并与实际数据进行比较.发现对于超过90%的测量点,其P-P边的实际测量结果只有理论上的30%.本文分析了被测AS的拓扑特征与其拓扑被发现完整性之间的关系,发现测量完整性随着被测AS与测量点间距离、测量点和被测AS邻居数量的增大而减少,与测量点的路由策略没有明显关系.     

一种解决用户隔离与资源共享矛盾的方法

为解决电子政务网络中部门隔离与信息共事之间的矛盾，通过对mpls／BGP VPN网络中VRF的route-target值的适当设置，设计出一种特殊的VPN。在这种VPN中，接入的部门之间是相互隔离的，同时．这些部门又都能访问共同的资源共事服务器。     

ISP的网络安全利器——BGP TTL安全检查

通过对BGP Peer建立和黑客攻击特点的分析．提出通过TTL校验提升BGP安全性的解决思路．并给出该思路的部署策略和主流路由器的配置方法。     

BGP4+协议研究与应用

边界网关协议(BGP)是当前互联网上应用最广泛的外部网关协议,用于在各自治域系统之间交换网络可达性信息。BGP4+在BGP版本4的基础上进行了扩展,使之携带的路由信息既能支持IPv4也能支持IPv6。介绍了BGP4+对BGP4协议的扩展、BGP4+软件的体系结构和工作过程。通过在IPv6网络环境中的应用,验证了BGP4+软件的邻居关系建立和路由重分发等功能。目前,BGP4+软件已经在基于VxWorks的路由交换机中实现。