Policy Routing (PR) is a new area of development that attempts to incorporate policy related constraints on inter-Administrative Domain (AD) communication into the route computation and forwarding of inter-AD packets.
rnProposals for inter-AD routing mechanisms are discussed in the context of a design space defined by three design parameters: location of routing decision (i.e., source or hop-by-hop), algorithm used (i.e., link state or distance vector), and expression of policy in topology or in link status. We conclude that an architecture based upon source routing, a link state algorithm, and policy information in the link state advertisements, is best able to address the long-term policy requirements of inter-AD routing. However, such an architecture raises several new and challenging research issues related to scaling.
策略路由(PR)是一个新的发展领域,它试图将与管理域间(AD)通信相关的策略约束纳入到AD间数据包的路由计算和转发中。 P> rn
在三个设计参数定义的设计空间中讨论了AD间路由机制的建议:路由决策的位置(即源或逐跳),使用的算法(即链路状态或距离矢量),以及拓扑或链接状态中策略的表达。我们得出的结论是,基于源路由,链接状态算法和链接状态广告中的策略信息的体系结构最能满足AD间路由的长期策略要求。但是,这样的体系结构提出了一些与扩展有关的新的挑战性研究问题。 P>
Computer Science Department, University of Southern California, Los Angeles, California;
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