| 释义 |
virtual routeVR 1.A path between a data source and a data sink that may be created by various circuit configurations during the transmission of packets or messages.；在传输信息包或报文时，可由各种电路配置产生的在数据源和数据宿之间的一种通路。 2.In SNA, a logical connection:abetween two subarea nodes that is physically realized as a particular explicit route, orbthat is contained wholly within a subarea no de for intranode sessions.A virtual route between distinct subarea nodes imposes a transmission priority on the underlying explicit route, provides flow control through virtual route pacing, and provides data integrity through sequence numbering of path information unitsPIUs.| 在系统网络体系结构SNA中，分别在下列两种情况下的逻辑连接：1在物理上作为特定的显示路由实现的两个子区网点之间，或2完全包含在用于内部网点对话的子区网点中。在不同的子区网点之间的虚拟路由，把传输优先级加给有关的显式路由，通过虚拟路由调步提供流控制，且通过通路信息单元PIU的顺序号提供数据的完整性。参阅explicit routeER, path, route extensionREX。 |