It is the keystone of the thesis that how to design proper software structure and data structures to transform the basic MPLS forwarding function specificated in MPLS architecture RFC documents into practical Linux systems.

• 如何设计相应的软件结构以及数据结构来将MPLS体系结构RFC文档中描述转发基本功能在实际的Linux系统上实现是本文研究的重点。