| 摘要 |
A method for enabling Open Shortest Path First (OSPF) routing in a transport network. The method comprises defining a network segment template; instantiating a respective network segment template for each node+link segment of the transport network; and connecting the link area of a first template instance to the node area of a second template instance using a remote ABR. The network segment template comprises a node area for enabling OSPF routing between addresses within a node of the transport network; a link area for enabling OSPF routing between the node and an adjacent neighbour node in the transport network; and a host Area Boarder Router (ABR) connected to the node area and the link area. The host ABR is configured to generate summary Link State Advertisement (LSA) messages containing a summary of addresses in the node area, and forward the summary LSA messages through the link area. The remote ABR is configured to generate summary LSA messages containing a summary of addresses reachable in the node area of the second template instance, and forward the summary LSAs through the link area of the first template instance. |
