| 摘要 |
An automatically switched optical network comprises: a number of areas on a transport plane, and a control plane. A method for transmitting data in the network comprises: when the control plane detects that at least one portion of an area is isolated from the other portions of the area, realizing a cross-area route between the isolated partitions of the area by a virtual link. When some area in the network has some portions that can not connected with one another by an intra-area route and data can not be transmitted among these portions, the method is used to implement hierarchical routing in the case of the partitioned area on the ASON transport plane, such that when some portions of an area are isolated from one another due to a link failure, cross-area hierarchical routing of the partitioned area can be implemented. |
