Cross-over end-to-end connection setting method for main apparatus protection in automatic exchange optical network

A technology of automatic exchange and establishment method, applied in the direction of data exchange network, digital transmission system, electrical components, etc., can solve problems such as immaturity, inability to establish and protect across domains, and achieve the effect of resisting failure

Active Publication Date: 2005-12-21
CHINA TELECOM CORP LTD
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Problems solved by technology

However, it cannot automatically establish an end-to-end connection through signaling. Moreover, this broadcast type "1+1" active/standby protection connection is generally private to the manufacturer and can only be implemented within a single domain and cannot be established across domains.
[0008] At pre

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  • Cross-over end-to-end connection setting method for main apparatus protection in automatic exchange optical network
  • Cross-over end-to-end connection setting method for main apparatus protection in automatic exchange optical network
  • Cross-over end-to-end connection setting method for main apparatus protection in automatic exchange optical network

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0027] see image 3 , the present invention is a method for automatically establishing a cross-domain end-to-end connection with 1+1 protection in an automatic switching optical network, comprising the following steps:

[0028] (1) The source nodes are respectively 1+1 working path and protection path to calculate routes satisfying various constraints;

[0029] (2) The source node first initiates the signaling to establish the working path. When the signaling reaches the inter-domain boundary node of the downstream network domain, the boundary node is responsible for further calculating the specific route of the working path in the network domain, and then establishes the working path. The connection of the path in this network domain; at this time, the routing i...

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Abstract

The method includes steps: (1) source node calculates routes of satisfying constrained condition for working route and protecting route respectively; (2) first, source node initiates signaling for building working route; when signaling reaches boundary node between domains of downstream network domain, the method calculates specific routes in this network domain of working route first, then builds connections in this domain of working route; (3) after working route point to point is built successfully, the source node initiates signaling for building protecting route; when signaling reaches boundary node between domains of downstream, the method asks boundary node between domains of working route for route information in this domain of working route; after obtaining response, the method calculates specific routes in this domain of protecting route and builds connections. Route information in a domain is shielded for other domain. The invention guarantees a straightway of communication.

Description

technical field [0001] The present invention relates to a method for establishing 1+1 active / standby protection in a communication network, to be precise, relates to an automatic establishment of a cross-domain end-to-end connection for 1+1 active / standby protection in an automatic switching optical network The method belongs to the technical field of 1+1 active / standby protection in an optical communication network. Background technique [0002] With the rapid development of network services, people have put forward higher requirements for various performances of optical communication networks: it is hoped that the structure of the network will be more flexible, the management of the network will be flexible and unified, and the bandwidth will have higher utilization and higher survivability And better scalability, can provide dynamic connections and effectively support future-oriented services, so the automatic switching optical network ASON came into being. [0003] A tr...

Claims

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Application Information

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IPC IPC(8): H04L12/24
Inventor 陆立周荣生杜春生刘萱
Owner CHINA TELECOM CORP LTD
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