| 摘要 |
An automatically switched optical network includes several areas of a transmission plane and a control plane, and a method for data transmission in the network includes that when the control plane has detected at least one partition of an area separated from other partitions of the area, a route over area is realized between the separated partitions of the area by the way of virtual link in the area. When several partitions exist in a certain area of the network, which can not be connected with each other through routes within the area, and the data transmission can not be performed between these partitions, a hierarchical route in the case of the area of ASON transmission plane being parted is realized by the method, so when the several separated partitions are caused by link fault in a certain area, the hierarchical route over area can be realized for the partitions of the area.
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