Method, system and node device for recovery path establishment

A technology for restoring paths and nodes, which is applied in the field of network communication, and can solve problems such as inability to restore services in a timely and effective manner, and increased demand for bandwidth resources

Active Publication Date: 2015-04-08
广东南邦新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Embodiments of the present invention provide a recovery path establishment method, system and node equipment, which solve the problems that the existing technology cannot recover services in a timely and effective manner and the demand for bandwidth resources increases

Method used

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  • Method, system and node device for recovery path establishment
  • Method, system and node device for recovery path establishment
  • Method, system and node device for recovery path establishment

Examples

Experimental program
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Effect test

Embodiment 1

[0121] Embodiment 1. This embodiment of the present invention provides a method for restoring path establishment. Such as figure 2 In the network shown, the network includes nodes A, B, C, D, E, and F, and the solid lines between the nodes represent optical fiber links. The working path of the service has a route of A-B-D-F, and corresponding bandwidth resources are allocated to the working path. The bandwidth resource on the A-C link and the bandwidth resource on the E-F link are occupied by other paths, possibly by the working path or protection path of other services, or by the protection path of the service A-F. Routes of one or more restoration paths of the service known to node A. Node A is the source node of the signaling message, and node F is the sink node of the signaling message. The working path has been established, so each node knows the routing information of the working path. Establishing a recovery path for the service, the method specifically includes th...

Embodiment 2

[0209] Embodiment 2, the embodiment of the present invention provides a node device, such as image 3 As shown, the node equipment includes:

[0210] The first judging unit 310 is configured to judge whether the first downstream adjacent node and the second downstream adjacent node are the same according to the routing information of the service recovery path and the routing information of the service working path, and obtain a first judgment result; the first downstream The adjacent node is the downstream adjacent node of the node on the recovery path; the second downstream adjacent node is the downstream adjacent node of the node on the working path;

[0211] The first allocation unit 320 is configured to allocate the first label and the first interface according to the condition, the condition includes the first judgment result; the first label is the forwarding label from the current node to the first downstream adjacent node; the first interface is the current node an ou...

Embodiment 3

[0220] Embodiment 3, the embodiment of the present invention provides a node device, such as image 3 As shown, the node equipment includes:

[0221] The first judging unit 310 is configured to judge whether the first downstream adjacent node and the second downstream adjacent node are the same according to the routing information of the service recovery path and the routing information of the service working path, and obtain the first judgment result; it can also be used Based on judging whether the first downstream adjacent node and the third downstream adjacent node are the same according to the routing information of the recovery path and the routing information of the service protection path, a second judgment result is obtained; the first downstream adjacent node is the node on the recovery path The downstream adjacent node on the above; the second downstream adjacent node is the downstream adjacent node of the node on the working path; the third downstream adjacent node...

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Abstract

The present invention relates to the field of network communications and specifically discloses a method for establishing a restoration path, including: determining, by a first node according to route information of a restoration path of a service and route information of a working path of the service, whether a first downstream neighboring node is the same as a second downstream neighboring node, and obtaining a first determination result; allocating, by the first node, a first label and a first interface according to a condition, where the condition includes the first determination result; sending, by the first node, an establishment request message to the first downstream neighboring node; receiving, by the first node, an establishment response message of the restoration path; and establishing, by the first node, a cross-connection of the restoration path according to the first label, the first interface, a fourth label, and a fourth interface. Embodiments of the present invention further disclose a system and a node device for establishing a restoration path.

Description

technical field [0001] The present invention relates to network communication technology, in particular to a method, system and node equipment for restoring path establishment. Background technique [0002] Automatically Switched Optical Network (ASON) can dynamically establish paths, and has a strong ability to resist failures. After the working path of the service fails, the service can be recovered through the recovery path to ensure the reliability of services with different survivability requirements. [0003] The existing automatic switching optical network technology can realize the dynamic establishment of the recovery path. Usually, two methods are used to establish the recovery path: preset routes but do not reserve bandwidth resources. This method cannot guarantee the bandwidth resources of the recovery path. The recovery path may be different from other The business preempts resources, and the business cannot be restored in a timely and effective manner after th...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L12/56H04L45/24H04L45/28
CPCH04L41/06H04L41/0663H04L45/28H04L45/22
Inventor 隋志成
Owner 广东南邦新能源有限公司
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