A traffic trunk can be characterized by administrator in optical Traffic Engineering with GMPLS, and an attribute of a traffic trunk is a parameter assigned to it which influences its routing and resource assignment.

• 在光传送网中采用基于GMPLS的控制平面来实现业务量工程时,网络操作者可以依据一定的策略赋予业务流主干(Traffic Trunk)不同的业务量工程属性,然后根据这些属性为业务进行选路并分配资源。