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Method and system for realizing protection and recovery in automatic switched optical network

A technology of automatic switching, optical network

Inactive Publication Date: 2009-09-16
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In view of this, the main purpose of the present invention is to provide a method and system for ASON to realize protection and recovery, which solves the problem that in the prior art ASON only targets the transmission plane and does not combine protection and recovery for the characteristics of the control plane itself. The problem of slow protection and recovery

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  • Method and system for realizing protection and recovery in automatic switched optical network
  • Method and system for realizing protection and recovery in automatic switched optical network
  • Method and system for realizing protection and recovery in automatic switched optical network

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Embodiment Construction

[0044] In ASON, the connection carrying protection services is a protection connection, and the connection carrying work services is a working connection. The method of protection and restoration of the control plane in ASON first needs to meet the following preconditions: M:N protection groups are configured in the ASON control plane, where M is the number of protection connections, and N is the number of working connections, where M: The protection services carried on the M protection connections in the N protection group are configured with no protection and no recovery attributes, and the working services carried by the N working connections in the M:N protection group are configured with recovery attributes and recovery attributes. This configuration is because the working service level is high, and the working connection carrying the working service is not easy to be preempted, and when the working connection fails and an alarm is generated, it is determined that a protec...

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Abstract

The invention discloses a method for realizing protection and recovery in an automatic switched optical network. M is configured in a control plane. After N protection groups, the method for realizing protection and recovery on the control plane comprises the steps of determining the connection type generating the warning variation according to the warning relative information obtained from a node; performing protection or recovery or replying or protection cancellation for the service of the connection according to the warning relative information and the connection type generating the warning variation. The invention also discloses a system for realizing protection and recovery in automatic switched optical network. Using the method and the system, whether the currently configured protective connection can provide protection for the service loaded on the failure work connection is detected, if so, protection is carried out, if not, recovery is carried out, so as to combine protection with recovery to shorten service intermittent disconnection time to be millisecond and to provide real-time and high-efficiency protection for the service.

Description

technical field [0001] The invention relates to optical network technology, in particular to a method and system for realizing protection and restoration in an automatic switching optical network. Background technique [0002] With the rapid growth of IP services, the demand for network bandwidth is not only becoming higher and higher, but also due to the uncertainty and unpredictability of IP traffic itself, the requirement for dynamic allocation of network bandwidth is becoming more and more urgent. A new network concept that can automatically complete the network connection - automatic switching optical network came into being. Automatically Switching Optical Network (ASON, Automatically Switching Optical Network) refers to an automatic switching transmission network applied to the Synchronous Digital Hierarchy (SDH, Synchronous Digital Hierarchy) transmission network defined by G.803 and the optical transmission network defined by G.872 . ASON includes three planes: tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q11/00H04J3/08H04B10/08
CPCH04B1/74
Inventor 廖明
Owner ZTE CORP
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