In SNA, the forwarding of a message unit alonga particular path through a network, as determined by parameters carried in the message unit, such as the destination network address in a transmission header.

• 在系统网络体系结构(SNA)中，报文单位沿著特定路径通过网络的转发过程，该路径由报文单位包含的参数(如传送标题中的目的地网络地址)确定。