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目前IP城域网一般采用集中式运营级地址转换(CGN)或者分布式CGN部署方案解决IPV4地址匮乏问题,这两种方案均存在投资过大等不利因素。从CGN集中备份、分布式部署的技术可行性分析,然后从工程造价进行对标,可以得出在IP城域网实施CGN集中备份分布式部署方案可以大幅降低网络建设成本的结论。值得在IP城域网建设中进行推广应用。
At present, IP MAN generally adopts the solution of centralized operation level address translation (CGN) or distributed CGN deployment to solve the problem of lack of IPV4 address. Both of these solutions have unfavorable factors such as excessive investment. From the technical feasibility analysis of centralized backup and distributed deployment of CGN, and then benchmarking from the engineering cost, it can be concluded that the distributed deployment of CGN centralized backup in IP MAN can significantly reduce the cost of network construction. Worth building in the IP MAN construction to promote the application.