LER路由器的软件实现

The Software Implemention of LER Routers

针对MPLS网络建设中某些路由器不能升级的问题进行了分析,提出在LINUX操作系统下以软件实现部分的标记边缘路由器(LER)功能,配合这些路由器实现MPLS功能。该软件实现了对标签的各种操作,解决了标签的定义、FEC的分类、标签的绑定、标签的交换和转发、标签堆栈的操作等工作。标签分发协议LDP控制交换路由器之间交换标签与FEC绑定信息,协调LSR之间的工作,软件中对LDP相关功能也进行了设计。

This paper analyzes the problems during the MPLS network construction,and provides a software framework, which realizes some MPLS ability on Linux and cooperating with the router. The software includes primary operations of label, such as the definition of label, FEC binding, labels switching, label forwarding and stacks operating. Furthermore, because of the importance of LDP, the software gives its implement, which can control the operations among the routers, and can regulate the capacities of LERs.