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Method of proceeding failure recovery using shared spare passage in lattice shape network

A technology of backup channel and main channel, applied in electrical components, transmission systems, etc., can solve the problems of unprotected services and low resource utilization, improve resource utilization, shorten service recovery time, and simplify signaling process Effect

Inactive Publication Date: 2004-12-22
FENGHUO COMM SCI & TECH CO LTD
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AI Technical Summary

Problems solved by technology

[0005] Traditional networks, such as Synchronous Digital Hierarchy (SDH) ring networks, mainly adopt the protection method. In this method, 50% of the resources are used for redundancy, and the resource utilization rate is low.
When the link fails twice, some services on the network cannot be protected

Method used

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  • Method of proceeding failure recovery using shared spare passage in lattice shape network
  • Method of proceeding failure recovery using shared spare passage in lattice shape network
  • Method of proceeding failure recovery using shared spare passage in lattice shape network

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Embodiment Construction

[0047] The technical principles and specific implementations of the present invention will be explained in detail below in conjunction with the accompanying drawings.

[0048]Firstly, the present invention provides a method for establishing a backup channel when the grid network adopts shared restoration and a method for activating the backup channel when the main channel fails. The establishment of the active channel uses a standard signaling protocol, such as Generalized Multiprotocol Label Switching Reserved Resource Protocol Extension (GMPLS RSVP-TE) or Generalized Multiprotocol Label Switching Restricted Label Distribution Protocol (GMPLS CR-LDP). However, the establishment of the standby channel requires related extensions to the signaling process and its signaling. The present invention only considers the signaling scheme of the network node, and does not distinguish whether the initiator of the connection is a UNI client or an EMS / NMS. After the entry node of the netw...

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Abstract

The invention relates to a method for carrying on failure restoration using shared backup channel in grating network, the method presets a backup channel when creating the primary channel, the backup channel presetting uses share mode, that is to say, the same resources can be used as the preset resources for several backup channels, when the primary channel is failed, it uses the label exchanging protocol to execute the signaling activating process of the backup channel, when one of the shared backup channel is activated, the other backup channels which carry on resources sharing to the activated channel are removed, then calculates these backup channels again. The invention uses sharing protection, upgrades the utilization rate of resources, because of the preset backup channel, the process activating the backup channel is simple and quick.

Description

technical field [0001] The invention relates to a fault recovery method using a shared backup channel in a mesh (Mesh) network, which can be applied to the backbone network of optical communication and the field of metropolitan area network. Background technique [0002] In recent years, with the rapid development of automatic switching optical network technology, it has brought many automatic control methods to optical networks, such as: automatic neighbor discovery, automatic topology discovery, etc., and the changes brought about in the reliability of optical networks are also huge. [0003] The introduction of the control plane requires that the nodes of the automatic switching optical network have distributed processing functions. Distributed processing capabilities make mesh recovery possible. Centralized recovery in mesh networks has not been widely used because of its long recovery time (on the order of minutes). The distributed mesh network can shorten the recove...

Claims

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Application Information

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IPC IPC(8): H04L69/14
Inventor 朱冰胡兴魏学勤
Owner FENGHUO COMM SCI & TECH CO LTD
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