Fault positioning method and system for point 2 multiple point (P2MP) path

A fault location and fault technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve problems such as increasing the complexity of root node location and fault processing, and achieve the effect of reducing complexity and accurate location.

Inactive Publication Date: 2012-02-08
ZTE CORP
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  • Claims
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Problems solved by technology

Although the above method can reduce unnecessary message sending, this method needs to know the topology structure of the entire network and the sequence relationship o

Method used

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  • Fault positioning method and system for point 2 multiple point (P2MP) path
  • Fault positioning method and system for point 2 multiple point (P2MP) path
  • Fault positioning method and system for point 2 multiple point (P2MP) path

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Embodiment Construction

[0031] The basic idea of ​​the present invention is: after the faulty branch path is located, the root node sends a fault location request message to each node through the P2MP path or the faulty branch path located, and the fault location request message is received on the faulty branch path The node feeds back a fault location response message containing its own identification information and the identification information of its next node to the root node, and the root node then locates the faulty link or node on the faulty branch path according to the fault location response message , so that the root node does not need to know the topology of the current P2MP network, it can accurately locate the specific link and / or node that has a fault in the P2MP path, and the root node can also learn the P2MP path when locating the fault. The topology information of each branch path.

[0032] refer to figure 1 As shown, the fault location method of the P2MP path of the present inven...

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Abstract

The invention discloses a fault positioning method and for a point 2 multiple point (P2MP) path, which mainly comprises the following steps that: a root node of the current P2MP path positions the fault branch path of the P2MP path, in addition, fault positioning request messages are sent through the positioned fault branch path or the P2MP path, each node receiving the fault positioning request messages on the fault branch path returns fault positioning response messages to the root node, and the root node positions fault links and/or nodes on the fault branch path according to the fault positioning response messages. The invention also discloses a fault positioning system of the P2MP path. The accurate positioning of the fault on the P2MP path can be realized, and in addition, the root node does not need to know the topology information of the whole P2MP service network, so the root node processing complexity is greatly reduced, simultaneously, the root node can also learn the topology structure information of each branch path on the P2MP path during the fault positioning.

Description

technical field [0001] The present invention relates to the functional field of operation, management and maintenance (OAM, Operation Administration and Maintenance) of point-to-multipoint (P2MP, Point To Multiple Point) services, and in particular to a fault location method and system for a P2MP path. Background technique [0002] With the continuous development of P2MP services such as IP TV (IPTV), the P2MP service will become the main service operated by various network operators. Therefore, it is of great significance to provide functions such as protection and OAM for P2MP services. At present, in the P2MP service, detecting whether there is a fault in the branch path in the P2MP path is mainly realized through the connectivity detection message. Specifically, the root node regularly sends the connectivity detection message to each leaf node in the P2MP path. When a branch If the leaf node on the path has not received the connectivity detection message sent by the roo...

Claims

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Application Information

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IPC IPC(8): H04L12/24H04L12/56
Inventor 刘国满
Owner ZTE CORP
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