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Method for establishing business path

A technology of service path and establishment method, which is applied to the selection device of multiplexing system, digital transmission system, electrical components, etc., can solve problems such as increasing network communication load, save system resources and save service path establishment efficiency Effect

Active Publication Date: 2008-07-23
ZTE CORP
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Problems solved by technology

[0009] 3. When the state of network resources (including network topology changes and node wavelength / sub-wavelength channel resources) changes or the cross-constraint information of a node changes, each Each node needs to notify other nodes in the network of the state change information of the local resources through the whole network flooding method, which will increase the overall communication load of the network

Method used

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Embodiment Construction

[0036] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0037] It should be understood that the said control plane and management plane of the present invention conform to the definition of the ITU-T G8080 standard; the DCN (Data communication network) signal channel involved in the present invention conforms to the definition of the ITU-T G8080, ITU-T G7712 standard ; The control plane signaling and implementation process mentioned in the present invention comply with ITU-T G8080, ITU-T G7713, RFC4328, RFC3471, RFC3473 and other regulations.

[0038] Fig. 2 is a flow chart of a method for establishing a service path according to the present invention. As shown in Figure 2, it includes the following steps:

[0039] Step...

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Abstract

The invention provides a method for building a service path, which comprises following steps: firstly, obtaining network topology information of a topology network, cross constraint information and resources status information of node equipment by each node control plane processor in advance, secondly, sending service path building requests which are from a source node to a destination node to the source node in the topology network by a managing plane, thirdly, searching service path from the source node to the destination node, which accords with the requirements for building the service path on the basis of the network topology information, the cross constraint information and the resources status information, thereby the invention adopts a mode of combining centralized path calculation and distributed resource allocation to achieve the purpose for saving system resource and the service path building efficiency in the process for building a service wavelength path.

Description

technical field [0001] The invention relates to a service path establishment method for establishing a service path in a complex topological network using wavelength division multiplexing technology. Background technique [0002] With the development of the application of optical communication network technology, the topological structure of the optical network presents a development trend from a simple chain and ring network to a complex network of a lattice network. In this way, the traditional network is mainly established through the manual configuration of the management plane. The method can no longer meet the requirements of effectively meeting the development of network services. Therefore, the industry has proposed the concept of Automatically Switched Optical Network (ASON), which mainly adds a special control plane between the original management plane and the transmission plane. To realize functions such as fast and efficient establishment of optical network serv...

Claims

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Application Information

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IPC IPC(8): H04J14/02H04Q11/00H04L12/56H04L47/76H04L47/80
Inventor 王振宇王大江
Owner ZTE CORP
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