MED诱发II型路由振荡的分析与研究  

Study and analysis of type II routing oscillation induced by MED

作　　者：李革新[1] 

机构地区：[1]温州大学计算机科学与工程学院,浙江温州325027

出　　处：《计算机工程与设计》2006年第20期3846-3848,3942,共4页Computer Engineering and Design

摘　　要：边界网关协议(BGP)是目前用于广域网中最主要的域间分布式动态路由协议,具有丰富的路由控制机制。为了更好地控制路由策略,当前大部分的营运商均将BGP部署到骨干路由器。随着网络的不断扩展,路由器数目的增多以及路由信息条目的激增,解决BGP的扩展问题变得越来越重要。在采用路由反射和路由联盟方法中,MED属性的使用通常会引起路由持久的振荡。介绍了含有MED属性的路由选择算法,给出了常见的MED配置方案,分析了MED诱发II型路由持久振荡的过程,提出了如何避免此类路由振荡的一般方法。At present, border gateway protocol is a mostly dynamic, distributed and inter-domain routing protocol used in WAN, it has plenty of routing control mechanisms. Attempting to better control routing strategy, most operators deploy BGP to backbone node routers, with the network scaled, the numbers of router are manifolded, and the items of route information are proliferated, the problems of settling the BGP scaling become more and more important. By means of the route reflections and route confederations, the MED attribute commonly induces to the persistent oscillation, the routing algorithm with the med attribute is introduced, and the general scenarios ofmed configuration are given, in addition, the process of the type II route oscillation induced by the med attribute are analyzed, the general methods solving the route oscillation are put forward in the end.

关 键 词：边界网关协议 MED 诱发 振荡 自治系统 骨干路由器 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]