Method for detecting exchange failure of intelligent optical network dual-direction multi-plexing section loop network protection

An intelligent optical network and protection switching technology, which is applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve the problem of failure to detect the failure of protection switching in the multiplexing section ring network, and achieve the effect of ensuring normal transmission

Active Publication Date: 2006-08-09
HUAWEI TECH CO LTD
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Problems solved by technology

[0006] The problem to be solved by the present invention is to provide a detection method for the failure of the bidirectional multiplex section ring network protection switching in the intelligent optical network, so as to solve the defect that the protection switching failure of the multiplex section ring network cannot be detected in the prior art

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  • Method for detecting exchange failure of intelligent optical network dual-direction multi-plexing section loop network protection
  • Method for detecting exchange failure of intelligent optical network dual-direction multi-plexing section loop network protection
  • Method for detecting exchange failure of intelligent optical network dual-direction multi-plexing section loop network protection

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[0031] combine figure 1 The method for detecting the failure of bidirectional multiplex section ring network protection switching in the present invention is described.

[0032] Step s101 transmits the routing protocol in the intelligent optical network, so that each network element has real-time network topology information of the entire optical network, including node, link, resource information (mainly including interface index of TE link, remote interface Index, remote node ID, bandwidth information, protection type, multiplex section type, information of the multiplex section to which it belongs, etc., among which the multiplex section information is used to indicate which links exist in the ring network, and link occurrences in the ring network After the fiber is cut, judge the switching status of the ring network, such as the multiplex section overhead K1, K2 in the SDH system); when the network element is required to establish a connection by the client device or the m...

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Abstract

The method includes following steps: (1) detecting real time information of network topology transmitted by using rote protocol between net elements in bidirectional multiplexing sectional rings of intelligent optical network; (2) using real time information of network topology to determine whether bidirectional multiplexing sectional rings are in ring protected rearrangement state; if yes, going to (3); otherwise, going to (1); (3) based on combination of topology change of optical network and alarm in service channel in higher order to determine bidirectional multiplexing sectional rings to be rearranged in intelligent optical network being in failure state of rearrangement. Through net element in service source end, the method launches relocating route to recover service so as to guarantee normal transmission of service when service rearrangement of multiplexing sectional rings in optical network is in failure.

Description

technical field [0001] The invention relates to a detection method for a bidirectional multiplex section ring network protection switching failure, in particular to a detection method for a bidirectional multiplex section ring protection switching failure in an intelligent optical network. Background technique [0002] ASON (Automatic Switched Optical Network, Automatically Switched Optical Network), also known as intelligent optical network, is implemented based on a distributed control plane and supports the optical network control plane for establishing dynamic switching connections. It overcomes the shortcomings of centralized management of traditional optical networks (such as SDH or Sonet, wavelength networks, etc.), and the creation, maintenance, and removal of optical connections require manual intervention. [0003] The network element in ASON first obtains the connection relationship between the network element and other network elements in ASON through the local l...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/437H04L12/26
Inventor 孙俊柏王彧周子浩
Owner HUAWEI TECH CO LTD
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