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A method for carrying out numbering to working operation on channel protection ring

A channel protection and protection ring technology, applied in the field of optical transmission network, can solve the problems of complex implementation mechanism, unsatisfactory reliability, and high dependence on inter-node communication, and achieve enhanced reliability and robustness, high reliability, and simple process Effect

Inactive Publication Date: 2008-10-15
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] 1. The ODUk service numbers of different working services on the ring are unique and cannot be repeated
[0020] 2. There can only be at most one working service on each section of a protection ring at the same time, that is to say, it can only correspond to at most one service number
If the business is automatically numbered by sending messages around the ring, the implementation mechanism is more complicated, and it relies heavily on inter-node communication, which is not ideal in terms of reliability.

Method used

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  • A method for carrying out numbering to working operation on channel protection ring
  • A method for carrying out numbering to working operation on channel protection ring
  • A method for carrying out numbering to working operation on channel protection ring

Examples

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Effect test

Embodiment 1

[0058] In this embodiment, each node in the protection ring is allocated a unique identification (ID) on the ring, and the unique identification (ID) of the node on the ring is used as the basis of the service number to interact on the ring, and finally based on the The unique identifier generates the service number of each working service on the ODUk protection ring. Specific steps are as follows:

[0059] 1. Assign a ring-wide unique identifier (indicated by Y here) for each node on the protection ring. For example, the ring node ID can be used directly, but the unique node identifier used to generate the service number is not limited to the ring node ID, and It can be allocated according to IP or manual allocation.

[0060] 2. Specify a uniform direction (clockwise or counterclockwise) on the ring, here we take clockwise as an example.

[0061] 3. Each node on the ring performs the following service numbering action: if the node has a clockwise insertion or extraction (AD...

Embodiment 2

[0077] In the first embodiment above, the node on the protection ring corresponding to one end of the working service notifies the other end of the working service of the identifier of the node, and the other end numbers the working service based on the identifier. In Embodiment 2, the node on the protection ring corresponding to one end of the working service numbers the working service based on the identifier of the node, and then notifies the node at the other end of the working service. The specific steps can be as follows:

[0078] 1. Assign a ring-wide unique identifier to each node on the protection ring, for example, designate each node of the protection ring to use the ring node number as the ring-wide unique identifier.

[0079] 2. Specify a uniform direction on the ring, such as clockwise.

[0080] 3. Each node on the ring performs the following service numbering actions: if a node has a clockwise insertion or extraction (ADD\DROP) work service from the protection ...

Embodiment 3

[0087] For the numbering of multicast services, Embodiment 3 of the present invention needs special explanation. Here, one multicast service sent to multiple nodes is equivalent to multiple services for service numbering. The service configuration is as follows Figure 5 , Figure 5 The multicast service is sent from node 1 and received at nodes 2 and 3.

[0088] For such a multicast service, we can equivalently consider that node 2 receives a work service from node 1, and itself (node ​​2) sends another work service to node 3. In this way, we equate the multicast service to Image 6 Two working operations are shown. The difference is that the service received by node 2 from node 1 is the same as the service content sent by node 2 to node 3 . As for the service number, it does not affect whether the two services are the same. In this way, applying the service numbering method proposed by the present invention and putting it into the previous embodiment 1 (or embodiment 2), ...

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PUM

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Abstract

A method for numbering working services on a channel protection ring includes allocating an identifier to each node on the protection ring, and specifying a direction on the protection ring. The process of numbering working services includes: after detecting that the node has an added or dropped working service in the downstream segment in the specified direction, the node on the ring sends a notification message which includes the identifier corresponding to the node to the downstream node in the specified direction; after receiving the notification message and detcting that the node has an added or dropped working service in the downstream segment in the reverse direction of the specified direction, the node on the ring assigns a serial number to the working service according to the identifier in the notification message. The present invention enables automatic numbering of services and dynamic adjustment of the service numbers on the ODUk protection ring, and fulfills the requirements of ODUk protection switching.

Description

technical field [0001] The invention relates to optical transport network (OTN) technology, in particular to a method for numbering working services on a channel protection ring. Background technique [0002] At present, in the transmission process of the optical network, there may be situations such as fiber breakage that affect service transmission at any time. In order to improve the reliability of service transmission and the usability of the optical network, it is necessary to address possible impacts in the optical Provide corresponding protection measures for business transmission. The protection measures usually use certain backup resources to protect the main resources, and when the main resources are abnormal, the corresponding service transmission is completed by the backup resources. [0003] Currently, the shared protection ring protection mode can be adopted in the optical transport network to realize service protection. In the ITU-TG.873.2 recommendation, th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L12/437H04L12/24H04J3/08
CPCH04J2203/006H04J3/14H04J3/085H04J3/1652
Inventor 曾宇
Owner HUAWEI TECH CO LTD
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