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主要针对BGP as-path属性和as-path filter的概念、配置和使用做介绍,重点讲解AS正则表达式的配置和匹配关系,并对使用as-path access-list进行BGP路由过滤的应用举例进行简单介绍.
This section describes the concepts, configurations, and usage of BGP as-path and as-path filters. It mainly focuses on the configuration and matching of AS regular expressions, and examples of BGP route filtering using as-path access-list a brief introdction.