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Sink node linkage switching method, sink node and system

A convergence node and linkage technology, which is applied in the communication field, can solve the problems of unable linkage switching, failing to notify the convergence node of linkage switching, and failure of the communication link to return to normal, etc., to achieve the effect of ensuring normal operation

Inactive Publication Date: 2011-03-30
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] During the research and practice of the prior art, the inventor of the present invention found that when the active OLT fails, or the main optical fiber between the active OLT and the optical splitter or extender fails, the corresponding PON port of the active OLT will switch When the standby OLT arrives, the aggregation node cannot be notified to perform linkage switching, and then the link between the aggregation node and the active OLT cannot be linked to the link between the aggregation node and the standby OLT, resulting in the failure of the communication link to return to normal

Method used

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  • Sink node linkage switching method, sink node and system

Examples

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Embodiment 1

[0027] Embodiment 1. A method for synchronous switching of aggregation nodes, the flow chart of which is as follows figure 1 shown, including:

[0028] A1, the sink node listens to the information transmitted between the active OLT and BNG connected to it;

[0029] In the embodiment of the present invention, the aggregation node listens to various information transmitted between the active OLT and the BNG connected to it, and the following examples illustrate:

[0030] The aggregation node listens to the PON port status information reported to the BNG by the active OLT periodically through the Access Node Control Protocol (ANCP) / Operation Administration Maintenance (OAM) message; or, the aggregation node listens to the ONU The digital subscriber line (Digital Subscriber Line. DSL) port state information reported to BNG by ANCP message or OAM message periodically, ANCP message or OAM message, this DSL port state information shows that the backbone between the ONU and the main ...

Embodiment 2

[0037] Embodiment 2. A method for synchronous switching of aggregation nodes, the flow chart of which is as follows figure 2 shown, including:

[0038] B1, when the sink node detects the active-standby switching message sent by the BNG to the standby OLT to replace the active OLT, it determines that the active OLT is faulty or the link between the active OLT and the sink node is faulty;

[0039] In the embodiment of the present invention, the master-standby switchover message can be implemented by using various existing messages, for example, it can be: ANCP message or OAM message.

[0040] B2, the aggregation node enables the backup port connected to the standby OLT, and closes the active port connected to the active OLT, and specifically the aggregation node searches for a local port according to the identification of the active port in the active-standby switching message The backup list obtains the identifier of the backup port corresponding to the identifier of the acti...

Embodiment 3

[0071] Embodiment 3, a kind of converging node, the structural diagram is as follows Figure 6 shown, including:

[0072] Listening unit 610, configured to listen to information transmitted between the active OLT and BNG connected to it;

[0073] A failure decision unit 620, configured to determine whether a link failure or equipment failure occurs on the active OLT side according to the information intercepted by the interception unit;

[0074] The port switching unit 630 is configured to activate the backup port connected to the standby OLT and close the active port connected to the active OLT when a link failure or equipment failure occurs on the active OLT side.

[0075] In the embodiment of the present invention, the listening unit may be specifically used to: listen to the PON port status information reported to the BNG periodically by the active OLT through the ANCP message or the OAM message; or, listen to the ONU periodically through the ANCP message or the OAM messa...

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PUM

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Abstract

The invention discloses a sink node linkage switching method, a sink node and a system. In the embodiment of the invention, the sink node intercepts information transmitted between a master optical line terminal (OLT) and a broadband network gateway (BNG), finds out faults in time based on the intercepted information, activates a local protection scheme in case of faults, enables a backup port connected with a backup OLT corresponding to the master OLT and disables a master port connected with the master OLT. The invention has the advantage that the sink node can carry out linkage switching in the switching process from the master OLT to the backup OLT, thereby ensuring the smooth communication.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for synchronously switching a convergence node, a convergence node and a system. Background technique [0002] Passive Optical Network (PON) technology is a point-to-multipoint (P2MP) optical access technology, which consists of optical line terminal (Optical Line Termination, OLT), optical splitter (Optical splitter) / Extender (Extender Box, EB), Optical Network Unit (Optical Network Unit, ONU) / Optical Network Terminal (Optical Network Terminal, ONT) and optical fiber connecting equipment. [0003] As the central office equipment, the OLT is connected to the optical splitter or extender through a trunk fiber, and the optical splitter / EB connects each ONU through a separate branch fiber. The trunk optical fiber is between the optical splitter / EB and the OLT, and several branch optical fibers are between the optical splitter / EB and the ONU. In the downstream d...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04B10/20
CPCH04Q11/0067H04L45/22H04L45/28H04Q2011/0081H04Q11/0062H04B10/032H04B10/079
Inventor 郑若滨沈承虎
Owner HUAWEI TECH CO LTD
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