Method and device for detecting MAC address drift in PON system

A MAC address and MAC address table technology, applied in the PON field, can solve problems such as low detection accuracy and efficiency, high processing pressure, and inability to locate ONU service flows, so as to improve detection efficiency and detection accuracy, simplify detection processes, and reduce The effect of CPU stress

Pending Publication Date: 2021-11-30
FENGHUO COMM SCI & TECH CO LTD
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  • Description
  • Claims
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Problems solved by technology

[0004] In the prior art, when identifying MAC (Medium Access Control, Media Access Control) address drift at the OLT line card end, the CPU (Central Processing Unit, central processing unit) of the OLT line card has a high processing pressure, and

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  • Method and device for detecting MAC address drift in PON system
  • Method and device for detecting MAC address drift in PON system
  • Method and device for detecting MAC address drift in PON system

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[0049] The present invention will be further described in further detail below with reference to the accompanying drawings and examples.

[0050] In the engineering scenario of the PON system, there is theoretical scenario in theory about MAC address:

[0051] Scenario: MAC address drift in the same UNI, that is, a malicious user pretending to be a normal ONU user's MAC address from different SFU's different second-floor business ports, causing normal ONU users unable to access the Internet.

[0052] Scenario: MAC address drift in the same UNI, that is, malicious users pretending to be a normal user's MAC address Internet access from different ports of the same MDU, causing normal ONU users unable to access the Internet.

[0053] Scenario 3: MAC address drifts from the NNI port to the UNI port, that is, malicious users pretend to be the MAC address from the NNI side of the OLT (NETWORKNETWORK INTERFA network - the network interface, the network side), which causes the network side...

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Abstract

The invention discloses a method and a device for detecting MAC address drift in a PON system, and relates to the field of passive optical networks, the method comprising the following steps: establishing an uplink MAC address learning table and a downlink MAC address learning table, each piece of MAC address table information of the uplink MAC address learning table comprising link information; and when the two-layer service port receives an external data message, learning the source MAC address of the message, and positioning the abnormal drifting ONU and the service flow attribute thereof according to the learning condition. Under the condition that the complexity of the PON system is not increased too much, the learning content of the OLT line card is optimized, so that the MAC address drift is quickly detected and processed, and the detection precision and the detection efficiency are improved.

Description

technical field [0001] The present invention relates to the technical field of PON (Passive Optical Network, passive optical network), in particular to a method and device for detecting MAC address drift in a PON system. Background technique [0002] With the full implementation of the last mile of broadband access network, the fiber-in and copper-out, PON technology and equipment have been applied on a large scale. [0003] The PON system consists of OLT (Optical Line Terminal, Optical Line Terminal), ODN (Optical Distribution Network, Optical Distribution Network), and ONU (Optical Network Unit, Optical Network Unit). ONU includes SFU (Single family Unit, single-family unit ONU ) and MDU (Multi-Dwelling Unit, multi-dwelling unit type ONU). [0004] In the prior art, when identifying MAC (Medium Access Control, Media Access Control) address drift at the OLT line card end, the CPU (Central Processing Unit, central processing unit) of the OLT line card has a high processing ...

Claims

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Application Information

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IPC IPC(8): H04Q11/00H04L29/12
CPCH04Q11/0067H04Q2011/0083H04L61/5053H04L2101/622
Inventor 吴军平胡威
Owner FENGHUO COMM SCI & TECH CO LTD
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