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Connection restoration method and routing domain of automatic exchange optical network

A technology of automatic switching and repairing methods, applied in the field of optical networks, can solve the problems of no combination description of protection and restoration, no mention of the inclusion relationship between the restoration routing domain and the protection routing domain, and achieve the effects of improving availability, avoiding confusion, and improving efficiency

Inactive Publication Date: 2010-06-09
ZTE CORP
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  • Abstract
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Problems solved by technology

[0005] However, the current ITU-T G.8080 and ITU-TG.7715 do not mention the containment relationship between the restoration routing domain and the protection routing domain, nor do they describe the combination of protection and restoration

Method used

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  • Connection restoration method and routing domain of automatic exchange optical network
  • Connection restoration method and routing domain of automatic exchange optical network
  • Connection restoration method and routing domain of automatic exchange optical network

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Embodiment Construction

[0031] In the automatic switching optical network, the protection and recovery coordination (Coordination) is implemented by the control plane, and both protection and recovery need to establish connection routes in the domain, so the control plane protection domain (CP protection domain, hereinafter referred to as "protection domain") and the recovery domain ( The Restoration domain (also called "restoration rerouting domain") belongs to the routing domain (Routing domain), so the protection domain and the restoration domain also have the inter-domain containment relationship defined in ITU-T G.8080.

[0032] There may be different containment relationships between the protection and recovery domains, such as the recovery domain contains the protection domain, the protection domain contains the protection domain, the protection domain contains the recovery domain, and more multiple containment relationships derived from this, the main idea of ​​the present invention is that Wh...

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Abstract

The invention provides a connection restoration method and a routing domain of an automatic exchange optical network. The routing domain of the automatic exchange optical network is a protection domain or restoration domain; the routing domains have the inclusion relation; when a certain routing domain breaks down and fails to be restored, the routing domain informs the larger routing domain containing the routing domain, and the larger routing domain carries out the connection restoration. The method and the routing domain of the invention can enhance the efficiency for completing the connection fault restoration by combining protection and restoration.

Description

technical field [0001] The invention relates to the field of optical networks, in particular to an automatic switching optical network connection repair method and a routing domain. Background technique [0002] Optical network, such as OTN (Optical transmission network, optical transport network), WDM (Wavelength-division multiplexing, wavelength division multiplexing), SDH (Synchronous digital hierarchy, synchronous digital series) or SONET (Synchronous optical network, synchronous optical network) transmission network , has been widely used in the field of telecommunications. [0003] Automatic switched optical network (ASON for short) is a research hotspot in the field of optical network in recent years. The ITU-T G.8080 proposal puts forward the concept of ASON, and completes the functions of the ASON network by setting a special control plane (Control plane, CP for short). Protection and recovery are technologies to ensure connection availability, and they are also k...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L12/56H04B10/08
CPCH04L45/62H04L45/04H04Q11/0062H04J3/14H04Q2011/0081H04L45/28H04L41/0668H04L43/0811H04L45/22
Inventor 高鹏付锡华孙德胜
Owner ZTE CORP
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