一种新的MPLS路由环路检测技术的研究与实现

Study of Forwarding Loop Detection in ATM-based MPLS

ＡＴＭ是目前支持ＭＰＬＳ的主要链路层技术，但是，基于ＡＴＭ的ＭＰＬＳ由于缺乏必要的机制无法提供分组转发时的环路检测及消除措施，分析了基于ＡＴＭ的ＭＰＬＳ标签分组的特点，结合ＩＰ网络中常用的ＴＴＬ机制，提出了新的解决转发环路的方法。

ATM is a promising technique for implementing MPLS but ATM based MPLS has no effective way for forwarding loop detection. In this paper, we analyzed the characteristic of label cell of ATM based MPLS, and proposed a useful method based on TTL that can detect the loop during packet transmission.