Method and system for OLT (optical line terminal) loopback detection in GPON (Gigabit-Capable PON) system

A loopback detection and loopback technology, applied in the field of optical communication, can solve problems affecting normal business operations, network data storms, etc., achieve a wide range of applications and ensure normal operation

Active Publication Date: 2017-07-11
FENGHUO COMM SCI & TECH CO LTD
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Problems solved by technology

[0003] Normally, the OLT line chuck in the GPON system supports 16 PON (Passive Optical Network, Passive Optical Network) ports, and each PON port has a split ratio of 128. If there is a data or protocol message ring in the link due to some reasons Forwarding will cause a data storm in the network and affect the normal business operation. Therefore, it is extremely important to implement loopback detection in the GPON system
[0004] In the prior art, the ring network detection protocol is generally used for loopback detection in the GPON system. The ring network detection protocol has the advantages of not being based on network topology calculation, active loop discovery

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  • Method and system for OLT (optical line terminal) loopback detection in GPON (Gigabit-Capable PON) system

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Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0041] see figure 1 As shown, the present invention provides a method for OLT loopback detection in a GPON system, which is used to solve when the ONU equipment in the GPON system (usually different manufacturers or OUN equipment with simple functions) does not support the intercommunication compatibility detection report between manufacturers. For example, the following situation occurs: if a LAN (Local Area Network, local area network) port of an ONU that does not support interoperability detection messages between manufacturers is formed into a loop, the server on the OLT network side The address is looped back to the user-side interface of the OLT, the server-related layer 2 address table on the OLT is rewritten, the data flow sent by the ONU to the server will not be forwarded to the network-side interface, and the ONUs connected to the entire OLT chassi...

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Abstract

The invention relates to the technical field of optical communication, and discloses a method for OLT (optical line terminal) loopback detection in a GPON (Gigabit-Capable PON) system. The method comprises the following steps: S1, initializing a receiving and packaging processing task of a CPU of OLT equipment, performing message receiving, recognizing whether a received message is a two-layer study mac address drifting message, going to S2 if yes, and finishing if not; S2, initializing a two-layer study processing task of the OLT equipment, and copying the message to the CPU of the OLT equipment under the situation of enabling the two-layer study mac (Media Access Control) address drifting detection loopback; S3, performing polling whether the two-layer study mac address drifting message is received, going to S4 if yes and repeating S3 if not; S4, performing alarm processing. The invention further discloses a system for OLT loopback detection in the GPON system. The method and the system disclosed by the invention can be used for effectively detecting loopback in the GPON system.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a method for OLT loopback detection in a GPON system and a system for OLT loopback detection in the GPON system. Background technique [0002] GPON (Gigabit-Capable PON, Passive Optical Access System) technology is the latest generation broadband passive optical integrated access standard based on the ITU-TG.984.x standard, with high bandwidth, high efficiency, large coverage and rich user interfaces And many other advantages, it is considered by most operators as an ideal technology to achieve broadband and comprehensive transformation of access network services. In the data encapsulation of GPON, the ONU (Optical Network Unit, optical network unit) receives the upstream data from the UNI (User Network Interface, user network interface), and the ONU encapsulates the upstream data into a GEM frame and sends it to the OLT (opticalline terminal, the optical line term...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04B10/077
CPCH04B10/077H04Q11/0062H04Q2011/0083
Inventor 肖云鹏郭紫健
Owner FENGHUO COMM SCI & TECH CO LTD
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