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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

Active Publication Date: 2011-01-26
浙江杭海新城控股集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main purpose of the present invention is to provide a method and device for obtaining a path of a WSON node, so as to at least solve the problem that the path of a WSON node cannot be obtained in the prior art

Method used

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  • WSON (Wavelength Switch Optical Node) route acquisition method and device
  • WSON (Wavelength Switch Optical Node) route acquisition method and device
  • WSON (Wavelength Switch Optical Node) route acquisition method and device

Examples

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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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Abstract

The invention discloses WSON (Wavelength Switch Optical Node) route acquisition method and device, wherein the method comprises the following steps of: acquiring an exit-direction route of a current node from a route section information base; judging whether a destination node pointed to by the exit-direction route is a destination node of an route to be acquired or not; if not, recording a route section between the current node and the destination node to be a route section of the route to be required and setting the pointed destination node to be the current node, and then repeating those steps; if so, recording the route section between the current node and the destination node to be a route section of the route to be required and saving the route to be required. According to the invention, the problem that the routes of WSON nodes can not be required in the prior art and all routes between a source one-board and a destination one-board can also be acquired.

Description

technical field [0001] The present invention relates to the field of optical networks, in particular to a method and device for obtaining a path of a wavelength switched optical network (Wavelength Switched Optical Network, WSON for short) node. Background technique [0002] Automatic Switched Optical Network (ASON for short) is a new generation of optical transport network that can intelligently and automatically complete optical network switching and interconnection functions. Compared with the traditional optical network, ASON introduces an intelligent control plane, so that the optical network can complete the automatic establishment of network connections, automatic resource discovery, and automatic recovery of services with protection attributes in failure scenarios under the control of signaling and other functions. [0003] Wavelength Switched Optical Network (WSON for short) is an ASON system based on Dense Wavelength Division Multiplexing (DWDM for short) equipmen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04B10/12H04L12/56
CPCH04J14/0284H04J14/0269H04J14/0212
Inventor 王静
Owner 浙江杭海新城控股集团有限公司
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