共查询到19条相似文献,搜索用时 140 毫秒
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策略路由技术是一种比传统基于目的地更灵活的路由技术,它根据数据包的一些特性通过人为定义策略来进行数据包的路由,大大提高网络的效率和灵活性,应用在基于源IP地址的策略路由、QoS的支持、节省开销、负载均衡等方面,就策略路由技术在宽带接入中的应用来展开对策略路由技术的阐述。 相似文献
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校园网有多个出口时,出口路由设备必须要对校内IP发出的数据分组进行策略路由处理,才能保证正常的通信。传统由网络管理员设置的源地址策略路由灵活性不够,无法满足用户多样变化的需求。因此提出由用户根据使用需要,自主选择所用IP地址的策略路由,在网络出口设备上对校园网发出的数据包进行正确的路由处理,实现更灵活和方便的校园出口策略路由。通过10年校园网的实际使用,证明该方式能满足用户的各种需求,运行稳定可靠。 相似文献
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新一代网络主动路由选择机制 总被引:1,自引:1,他引:0
分组交换网是当今全球通信基础设施的重要部分,IP网络终将与其他网络相互融合,演化成为新一代网络技术。现有路由协议的实现是单一的,并且将数据库、最优路径计算和网络状态分发机制捆绑在一起。主动路由选择是一个把上述困难作为目标的新路由选择策略。本文提出一个新一代网络主动路由选择机制,能够克服传统路由选择机制的局限性,支持多种网络技术。 相似文献
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程克勤 《电子产品维修与制作》2009,(1):50-51
策略路由(PolicY—Based Routing)是路由器的一项扩展功能。它不仅能以目的地址为依据来进行路由选择,还能根据源IP地址、目的IP址、协议字段,甚至于TCP、UDP的源、目的端口等多种组合进行选路。简单地说,只要IP标准或扩展的访问控制列表(Standard/Extended ACL)能设置的,都可以作为策略路由的匹配规则进行转发。 相似文献
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余小珊 《电子产品维修与制作》2009,(8):102-104
所谓IP策略路由,顾名思义,就是根据一定的策略进行IP报文转发,因此策略路由是一种比目的路由更灵活的路由机制。在路由器转发一个IP数据报文时,首先根据配置的策略规则对报文进行过滤,匹配成功则按照一定的转发策略进行报文的转发。这种策略规则可以基于标准和扩展访问控制列表,也可以基于报文的长度;而转发策略则是控制报文按照指定的策略路由表进行转发。 相似文献
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Yunzhao Li Hong Liu Don Guenbacher Caterina Scoglio 《Mobile Networks and Applications》2014,19(5):649-659
The KAD network is one of the largest distributed hash tables (DHT) deployed in the real world. DHT is designed to provide scalable peer-to-peer lookup service. Its real-world lookup performance, however, is recognized as inefficient. We ran wide-range measurements on the KAD network to evaluate this inefficiency by examining peer behaviors in publishing and retrieving information using routing tables and publishing tables. Our measurements show that even though routing tables are well maintained, the current refreshment scheme of publishing tables and lack of effective incentive policy cause lookup performance deficiency. Based on our findings, we propose three improvement schemes, analyze their strengths, and give suggestions to implementations. 相似文献
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随着网络规模的不断增大以及网络复杂度的不断提高,传统路由算法面对网络流量在时空分布上的剧烈波动难以兼顾计算复杂度和算法效率.近年来,随着软件定义网络和人工智能技术的兴起,基于机器学习的自动路由策略生成逐渐受到关注.本文提出一种基于深度增强学习的智能路由技术SmartPath,通过动态收集网络状态,使用深度增强学习自动生成路由策略,从而保证路由策略能够动态适应网络流量变化.实验结果表明,本文所提出的方案能够不依赖人工流量建模动态更新网络路由,在测试环境下比当前最优方案减少至少10%的平均端到端传输时延. 相似文献
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Roy Yates Christopher Rose Subhashini Rajagopalan B. R. Badrinath 《Mobile Networks and Applications》1996,1(2):105-112
Source messages intended for a mobile host can be routed in one of two ways. Either the source knows the direct route to the mobile host, and is informed of all location changes by the mobile host (informed routing), or the source directs messages to a home agent that forwards messages to the mobile host (triangle routing). When the rate at which the mobile host changes location and the rate at which messages are directed to the mobile host are known and fixed, we show that the optimal routing policy is described by a threshold rule that depends on the normalized differential cost of the routing techniques and the ratio of the source messaging to location update rates. Since thiscall to mobility ratio may not be knowna priori or may change slowly with time, we also derive an adaptive policy selection algorithm. The policy is derived from a maximum likelihood estimate of the call to mobility ratio based on observations of message arrivals and location changes. The algorithm is found to work well when there is a clear advantage to either triangle or informed routing. However, when the two routing schemes are relatively close in average cost, the algorithm performance is degraded by repeated policy reversals. For this reason, algorithms which use hysteresis and/or a preset preference (preference threshold) for one routing scheme or another were explored. It was found that neither hysteresis, nor preference threshold techniques alone performed well, but rather a combination of the two resulted in greatly improved performance for a wide range of values of the call to mobility ratio. 相似文献
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文章分析了校园网多出口的需求及面临的问题,指出目前常用的基于网络地址转换(NAT)的校园网多出口路由策略存在的缺陷,提出了一种结合网络地址转换、路由策略、策略路由等多种技术的多出口配置方案。并结合校园网实例实现了具体应用,实践证明该方案通过策略路由技术的灵活应用,满足了多校区多出口校园网的各种应用需求。 相似文献
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简单介绍虚拟局域网(VLAN)及策略路由的概念,详细介绍在Linux下VLAN及策略路由的实现.根据具体问题并结合实例详细介绍在Linux下如何将二者结合解决实际问题. 相似文献
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简单介绍虚拟局域网(VLAN)及策略路由的概念,详细介绍在Linux下VLAN及策略路由的实现,根据具体问题并结合实例详细介绍在Linux下如何将二者结合解决实际问题。 相似文献
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In recent years there has been a growing interest in opportunistic routing as a way to increase the capacity of wireless networks by exploiting its broadcast nature. In contrast to traditional uni-path routing, in opportunistic routing the nodes overhearing neighbor’s transmissions can become candidates to forward the packets towards the destination.In this paper we address the question: What is the maximum performance that can be obtained using opportunistic routing? To answer this question we use an analytical model that allows to compute the optimal position of the nodes, such that the progress towards the destination is maximized. We use this model to compute bounds to the minimum expected number of transmissions that can be achieved in a network using opportunistic routing. 相似文献