In SNA, the series of path control network components (path control and data link control) that are traversed by the information exchanged between two network a ddressable units(NAUs). A path consists of a virtual route and its route extension, if any.

• 在IBM系统网络体系结构(SNA)中,两个网络的可寻址单元(NAU)之间交换的信息所经过的一系列通路控制网络成分(路径控制程序和数据链路控制程序)。通路由虚拟路由及其扩充路由(如果有的话)所组成。