描述路由的基本改概念(包括IP数据包转发，路由查询)。
Describe basic routing concepts (including: packet forwarding, router lookup process).
各模块均应能实现信息的增、删、改等操作以及必要的查询、统计功能。
Each module should be able to achieve growth of information, delete, etc. operation and the necessary inquiries, statistical functions.
各模块均应能实现信息的增、删、改等操作以及必要的查询、统计功能。
Each module should be able to achieve growth of information, delete, etc. operation and the necessary inquiries, statistical functions.
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