目录1BGP概述....................................................................................................................................................11.1BGP协议的定义.................................................................................................................................11.2BGP协议的发展经历.........................................................................................................................11.3BGP协议基本思想.............................................................................................................................11.4BGP协议特性.....................................................................................................................................12BGP协议详解............................................................................................................................................22.1BGP协议的消息类型.........................................................................................................................22.2BGP报文种类.....................................................................................................................................22.3自治系统...........................................................................................................................................52.5BGP路由属性.....................................................................................................................................62.5.1BGP路由属性的分类...............................................................................................................62.5.2常见的路由属性.......................................................................................................................72.5.3BGP路由传递.........................................................................................................................112.5.4BGP如何根据属性完成决策..................................................................................................112.6BGP过滤功能...................................................................................................................................123BGP的应用..............................................................................................................................................123.1BGP的使用原则...............................................................................................................................123.2BGP协议中消息的应用...................................................................................................................133.3BGP的同步.......................................................................................................................................133.4成为BGP路由的途径......................................................................................................................14参考文献.......................................................................................................................................................17附录缩略语.................................................................................................................................................181BGP概述1.1BGP协议的定义BGP（BorderGatewayProtocol）是一种自治系统间的动态路由协议，它的基本功能是在自治系统间自动...
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