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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  • Abstract
  • Description
  • Claims
  • Application Information

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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 its detection granularity can only be based on The PON port cannot locate the internal drift of the rogue ONU, the specific ONU and the service flow of the specific ONU cannot be located, and the detection accuracy and detection efficiency are low.

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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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Embodiment Construction

[0049] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0050] In the engineering scenario of the PON system, there are theoretically the following scenarios regarding MAC address drift:

[0051] Scenario 1: MAC address drift occurs in the same UNI port, that is, a malicious user on the ONU side pretends to be the MAC address of a normal ONU user to access the Internet from different Layer 2 service ports of different SFUs, causing normal ONU users to fail to access the Internet.

[0052] Scenario 2: MAC address drift occurs in the same UNI port, that is, a malicious user pretends to be a normal user's MAC address to access the Internet from a different port of the same MDU, causing normal ONU users to fail to access the Internet.

[0053] Scenario 3: The MAC address drifts from the NNI port to the UNI port, that is, a malicious user pretends to be the MAC address from the NNI side of the OLT (Netw...

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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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