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下一代互联网IPv6能力的开发
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凌苗 秦浩
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摘要:文章介绍了以IPv6为核心技术的下一代互联网在IPv6的地址管理、服务质量扩展、集成的安全特性、对移动性的支持等方面的功能特点,并针对现在电信运营中方兴未艾的虚拟专用网(VPN)业务,探讨了IPv6技术下VPN的实现。文章认为采用IPv6技术不仅会促进数据通信市场发展,还会促进以话音通信为主的固定通信和移动通信市场,产生新的以娱乐和教育为主的视频通信服务市场以及信息家电连网服务市场,IPv6技术会为电信运营业带来广阔的市场前景。 关键词:服务质量;流标签;差分服务;集中服务;流分类 Abstract: The paper analyzes the improved functionalities of IPv6 that is the core of Next Generation Internet (NGI), in respects of IP address management, QoS extension, integrated security property, and mobility support. Concerning the rising Virtual Private Network (VPN) services favored by carriers, it discusses how to implement VPN on the basis of IPv6. It is concluded that IPv6 will promote not only the data communications market but also the voice-service-dominant fixed-line and mobile markets, thus creating markets for new kinds of video services aiming at entertainment and education as well as markets of household electric appliance networking services. The IPv6 technology will certainly bring telecom carriers a prosperous future market. Key words:quality of service; flow label; DiffServ; IntServ; traffic class 大量增加的上网设备使得互联网的规模不断扩大,基于32位地址的IPv4协议逐渐显得力不从心。尽管出现了诸如网络地址转换(NAT)、无类域间路由(CIDR)以及混合地址等技术,在一定程度上缓解了IPv4地址短缺的压力,但是同时也带来了许多负面作用(如破坏了网络层的端到端架构等)。
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