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Method and apparatus for obtaining constrained path of loose routing in intelligent optical network

An intelligent optical network, a loose technology, applied in the field of intelligent optical network, can solve the problem of not being able to meet the continuous growth, dynamic and flexible demands of data services, achieve the effect of reducing processing capacity requirements and improving network efficiency

Inactive Publication Date: 2005-03-09
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This kind of optical network system cannot meet the growing, dynamic and flexible requirements of data services. The key to solving this problem is dynamic optical switching

Method used

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  • Method and apparatus for obtaining constrained path of loose routing in intelligent optical network
  • Method and apparatus for obtaining constrained path of loose routing in intelligent optical network
  • Method and apparatus for obtaining constrained path of loose routing in intelligent optical network

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Embodiment Construction

[0053] In order to make it easier for those skilled in the art to understand and realize the present invention, the embodiments of the present invention are described in conjunction with the accompanying drawings.

[0054] figure 2 A flow chart of a method for obtaining a loosely routed constrained path in an intelligent optical network according to an embodiment of the present invention is shown. The present invention implements loose routing constraints through multiple CSPF calculations at the source node to obtain paths for establishing a network; wherein, the number of CSPF calculations is related to the number of loose nodes. In the present invention, it is required that the given loose nodes are sequential, that is to say, the given loose nodes must be passed sequentially in the final path. The process of the method of the present invention is as follows:

[0055] When starting to establish a network path, first at step 10, set all loose nodes to be prohibited; then ...

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Abstract

This invention provides a method and devices of acquiring contraint paths for loose routes in intelligent optical network. The method includes: acquiring sequence loose nodes, the source node, the destination node and the network topology, computing paths from the said source node to the first sequence loose node, merging all computed paths to connect them orderly in head and tail to form a complete path output. The devices include an acquiring device, a compute and control device and a path merge device which sets up a path in conformity with loose route restraint.

Description

technical field [0001] The invention relates to an intelligent optical network, in particular to a method and a device for obtaining a loose routing constraint path in an intelligent optical network. Background technique [0002] Optical network, including SDH / Sonet, wavelength network, is traditionally a system based on centralized management. Optical network nodes are usually "dumb", and manual intervention is required to create, maintain, and remove optical connections. Optical connections established in this way are called permanent connections. This kind of optical network system cannot meet the growing, dynamic and flexible requirements of data services. The key to solving this problem is dynamic optical switching. ITU's Automatically Switched Optical Network (ASON) architecture adds a control plane to the traditional optical network: the optical network node first obtains the connection relationship between the network node and other optical network nodes through the...

Claims

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Application Information

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IPC IPC(8): H04Q3/00H04Q3/52H04Q11/00
Inventor 罗贤龙王彧
Owner HUAWEI TECH CO LTD
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