A multi-route selection method and device

A routing and selective receiving technology, which is applied in the field of data communication, can solve problems such as decreased security, poor end-to-end scheduling and management capabilities of services, and insufficient network reliability, achieving high network reliability, fast switching recovery, and intelligent protection switching Recovery effect

Active Publication Date: 2021-06-04
WUHAN ACCELINK TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Generally speaking, in the traditional transmission network, the network reliability is not high enough to resist multi-point failures, especially when multi-rings are connected in series or nested, the security is further reduced, and it is impossible to achieve perfect and

Method used

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  • A multi-route selection method and device
  • A multi-route selection method and device
  • A multi-route selection method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The embodiment of the present invention provides a multi-route selection method. Before the service transmission, firstly configure a working path and at least one protection path for the transmission service in the transmission system, and configure the routing mode of each node, as follows:

[0043] by figure 1The network transmission system shown is taken as an example, the letters A-H respectively represent each node in the system, and the numbers 1-10 represent the intermediate links between the nodes respectively. In business transmission, business data needs to be transmitted from source node A to sink node E, and the transmission path from source node A to sink node E is the arrangement and combination of various intermediate links; for example, the transmission path from A to E It can be 1-2-3-4-5, 1-8-9-10-5, 1-6-4-5, etc. Usually, multiple services need to be transmitted in the same transmission system, and each transmission service corresponds to a differen...

Embodiment 2

[0062] On the basis of the above-mentioned embodiment 1, in the embodiment of the present invention, a current classic application scenario - "日" character ring network transmission system is taken as an example to introduce the multi-routing selection method provided in embodiment 1, as follows Image 6 As shown, in the "日" character ring network transmission system, it includes 6 network nodes (network element A-network element F) and 7 bidirectional links (link 1-link 7), and the transmission service is from network element A The ingress of NE enters and is sent out from the egress of NE F.

[0063] Assume that NE C is single receiving (link 2), NE D is dual receiving (link 3 and link 4), and NE F is dual receiving (link 6 and link 7), and the currently transmitted service is SNCP1. Take the failure of link 2 as an example. At this time, the network element C cannot receive the luminous signal of network element A, and detects that there is no light in the LOS. 4 and link...

Embodiment 3

[0070] On the basis of the above-mentioned embodiment 1 and embodiment 2, in the embodiment of the present invention, another classic application scenario-"Tian"-shaped network transmission system is taken as an example, and the multi-routing selection method provided in embodiment 1 Introduce, such as Figure 8 As shown, in the "Tian"-shaped network transmission system, it includes 9 network nodes (network element A-network element I) and 12 bidirectional links (link 1-link 12), and the transmission service is from network element A The entrance of network element I is sent out from the exit of network element I.

[0071] Assume that NE C is single receiving (link 2), NE F is dual receiving (link 6 and link 7), and NE I is dual receiving (link 11 and link 12), and the currently transmitted service is SNCP1. Taking the failure of link No. 2 as an example, the network element C sends a link failure notification message to the network element D and the network element E throug...

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Abstract

The invention relates to the field of data communication and the field of optical transmission technology, in particular to a multi-routing selection method and device. The method includes: pre-configuring a working path and at least one protection path for the transmission service, and configuring the routing mode of each node; when any link fails, the nearest downstream node M of the faulty link sends a fault notification message, and sends a fault notification message to the downstream Nodes are transmitted step by step; after any node N downstream of node M receives the fault notification message, if N is a selective node and the link receiving the fault notification message is on the working path, the transmission service will be switched to the protection path , the failure notification ends; if N is a transparent transmission node, the message will continue to be transparently transmitted to the downstream node of node N. The invention can judge and switch according to the node routing mode, quickly switch the transmission service to the protection link when necessary, realize the intelligent protection and fast switching recovery of the transmission service, and enhance the reliability of the network.

Description

【Technical field】 [0001] The invention relates to the field of data communication and the field of optical transmission technology, in particular to a multi-routing selection method and device. 【Background technique】 [0002] Optical network transmission equipment occupies an extremely important position in network construction and is the core of the entire network. In this network era where the amount of data is increasing exponentially every year, the transmission equipment as the core of the network link needs to ensure the stability of the business and the service deployment of the fault multi-path protection. Select a path that can be transmitted normally in the route to switch, so that the transmission system can quickly resume normal transmission. [0003] In the traditional long-distance transmission network, when a fault occurs in the transmission path, the switching of the protection path is mainly realized in the following two ways: one is point-to-point, that is...

Claims

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Application Information

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IPC IPC(8): H04L12/703H04L12/707H04L12/761H04L45/28H04L45/16H04L45/24
CPCH04L45/16H04L45/22H04L45/28
Inventor 吴先勤张颖王文忠王琴余昌胜刘兵张传彬
Owner WUHAN ACCELINK TECH CO LTD
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