Key;
Laboratory;
of;
Information;
Photonics;
and;
Optical;
Communications;
of;
Ministry;
of;
Education,;
Beijing;
University;
of;
Posts;
and;
Telecommunications,;
Beijing;
100876,;
P.;
R.;
China;
多协议标签交换; 服务机制; MPLS; 数据转发; 总磷; 时分多路复用; 虚拟专用网络; 网络服务;