摘要： 孤立的多个NAT-PT无法为会话提供较短的路径，NAT-PT发生故障会导致经过该NAT-PT的会话中断和IPv4地址的浪费。该文提出一种支持动态选路的NAT-PT机制，通过NAT-PT间的伪路由发布和信息共享，使多个NAT-PT协同工作，互为同步/友好NAT-PT，为报文提供动态选路支持，实现报文路径的优化和故障NAT-PT负载的实时迁移。

关键词: NAT-PT机制, 拓扑局限性, 动态选路, 信息共享, 伪路由

Abstract: Multiple isolated Network Address Translation Protocol Translation(NAT-PT) can not offer shorter path for a session, and all sessions via one NAT-PT may be broken and the IPv4 addresses may be wasted when NAT-PT failing. A Dynamic Routing NAT-PT(DRN) mechanism is presented to coordinate multiple NAT-PT working. With the pseudo route information which is broadcasted by DRN and shared information among NAT-PTs, NAT-PT becomes synchronous/friendly NAT-PT each other and achieves dynamic routing. A more appropriate NAT-PT is chosen to make path length of a session shorter and the load of a failure NAT-PT can be moved to a working one automatically.

Key words: Network Address Translation Protocol Translation(NAT-PT) mechanism, topology limitation, dynamic routing, information sharing, pseudo-route

中图分类号: 

• TP393.03