IPv4与IPv6的比较与过渡策略

Comparison Between IPv4 and IPv6 and Transition Strategy

随着互联网的普及和快速发展,网络应用、网络服务和网络需求也日益增多,然而目前IPv4地址资源已经枯竭,同时其固有的诸多局限已无法满足互联网发展要求,而IPv6在地址资源、服务质量、移动性、自动配置能力和安全性等各方面均表现出极大优势,由IPv4向IPv6的升级过渡是互联网进一步发展的必然趋势。可以通过双栈协议、隧道技术和NAT-PT转换等策略,在大力推进IPv6试点和应用的同时,逐步实现由IPv4向IPv6升级和过渡,为互联网的更好发展奠定基础。

With the rapid development and popular use of the Internet,the network applications,the network services and the network requirements become important issues.The resource of IPv4 addresses is dwindling now to the limit of exhaustion,at the same time,the inherent shortcomings of IPv4 are very obvious：running out of address resources,slow network speed,poor mobility,poor quality of service and low security,so IPv4 cannot meet the requirements of the rapid Internet development.On the other hand,IPv6 shows great advantages in performance in many aspects such as full address resources,high quality of service,convenient mobility,strong ability of automatic configuration and high security;The transition from IPv4 to IPv6 is an inevitable trend of the Internet＇s further development. Through the strategy of dual-stack,tunneling and NET-PT conversion,the IPv6 pilot and application will be vigorously promoted,and IPv4 will be gradually upgraded and transited to IPv6.It will lay the foundation for the better development of the Internet.