WSON (Wavelength Switch Optical Node) route acquisition method and device
A technology of wavelength switching and optical network, which is applied in the field of optical network, can solve the problem of not being able to obtain WSON node paths, and achieve the effect of maximizing resource utilization
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Embodiment 1
[0036] figure 1 It is a flowchart of a method for obtaining a path of a WSON node according to an embodiment of the present invention, which includes:
[0037] S102, from Figure 5 Obtain the outbound path of the current node from the path segment information base shown. Preferably, when starting path acquisition, the starting node of the path to be acquired is set as the current node;
[0038] S104, judging whether the destination node pointed to by the outbound path segment is a termination node on the path to be obtained, if not, go to S106; if yes, go to S108;
[0039] S106. Record the path segment between the current node and the destination node as a path segment in the path to be obtained, and set the pointed destination node as the current node, and go to step S102. Preferably, the path segment between the current node and the destination node is stored in a path link list, if the current node (that is, the current single board) has multiple outgoing fiber segments ...
Embodiment 2
[0057] image 3 It is a schematic diagram of another path between the source single board S (starting node) and the destination single board D (termination node) according to the embodiment of the present invention. It can be seen that there are 3 paths between the S node and the D node. which, with figure 2 The difference between the paths shown is that there are three path segments in the outbound direction of node A (board A), and the destination nodes of the three path segments are all node B (board B). Board ingress port.
[0058] For this path structure, the present invention provides an embodiment of a preferred path acquisition method, which includes:
[0059] S1, from Figure 5 Obtain the outbound path of the current node in the optical fiber information storage library; preferably, during initialization, set the starting node (for example, source single board S) of the path to be obtained as the current node;
[0060] S2, judge whether there are multiple outgoin...
Embodiment 3
[0070] Figure 4 It is another schematic diagram of a path between a source single board (starting node) and a destination single board (terminating node) according to an embodiment of the present invention. which, with figure 2 The difference between the paths shown is that between the start node S and the end node D, there are multiple paths in the outbound direction of nodes M1, M2, and M3, node A is an empty node (no fiber connection in the outbound direction), and node H The outbound path of is pointing to M2, thus forming an endless loop.
[0071] In the present invention, the infinite loop configuration on the path means that the optical signal carrying the service passes through the same single board multiple times (more than once). This scenario does not exist under the normal configuration inside the WSON node. This scenario may be caused by the wrong connection of the optical fiber to the internal environment of the manually built node.
[0072] For this path st...
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