Method, device and system for routing protocol message issuance and routing computation

A routing protocol and message technology, applied in the field of optical network communication, can solve the problems of long connection establishment or rerouting time, low channel establishment efficiency, inability to fully utilize the network resource wavelength utilization efficiency, etc., and achieve the effect of saving network resources.

Inactive Publication Date: 2010-09-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The disadvantage of using this method is that the channel establishment efficiency is low, resulting in a long time for connection establishment or rerouting, and this method cannot make full use of network resources to maximize wavelength utilization efficiency

Method used

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  • Method, device and system for routing protocol message issuance and routing computation
  • Method, device and system for routing protocol message issuance and routing computation
  • Method, device and system for routing protocol message issuance and routing computation

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Embodiment Construction

[0036] The method, device and system for publishing routing protocol messages and routing calculation in the WDM network according to the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] It should be clear that the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0038] Such as figure 1 As shown, the method for publishing a routing protocol message in a WDM network in an embodiment of the present invention includes:

[0039] S101. Acquire node information and link information of the current node, where the node information includes port crossover capability information of the node, and the link information includes wavelength availability informatio...

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Abstract

The embodiment of the invention discloses a method, a device and a system for routing protocol message issuance and routing computation, relates to the an optical network communication technology and aims at solving the problems of excessively long time for establishing routing or re-routing and low wavelength utilization efficiency in the current wavelength routing. The method for the routing protocol message issuance comprises the following steps: obtaining node information and link information of a node, wherein the node information comprises port crossing capacity information of the node, and the link information comprises wavelength availability information of all links connected with the node; and carrying the obtained node information and the link information through a type-length-attribute object of a routing protocol message and issuing the routing protocol message in a network. The embodiment of the invention is applicable to the routing issuance and the computation in the wave division network.

Description

technical field [0001] The invention relates to optical network communication technology, in particular to a method, device and system for routing protocol message publishing and routing calculation in a wavelength division network. Background technique [0002] With the rapid development of telecommunication networks, optical networks have become the core of future WANs and MANs, among which, wavelength division multiplexing (Wavelength Division Multiplexing, WDM) optical networks have received extensive attention, and optical wavelength routing switches (Wavelength Routing The emergence of Switch, WRS) and Photonic Cross Connector (PXC), enables the network to realize data exchange in the optical domain. [0003] In a WDM optical network, an optical channel needs to be jointly determined by passing optical switching nodes, optical links (optical fibers) and wavelengths (channels) assigned to each optical link. In an all-optical group without wavelength conversion capabili...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J14/02
CPCH04J14/0267H04J14/0258H04J14/0257H04J14/0256H04J14/0269H04J14/0227H04L45/02H04J14/0268
Inventor 章发太韩建蕊林毅
Owner HUAWEI TECH CO LTD
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