Optical network terminal, port speed limiting attribute configuration method and packet process method

An optical network terminal, passive optical network technology, applied in the PON field, can solve the problems of high importance, data packet loss, low data importance, etc., to achieve the effect of preventing denial of service attacks and preventing overflow

Active Publication Date: 2013-08-07
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If one UNI 1 receives a data stream with a high rate but low importance data, and another UNI n receives a data stream with a low rate and high importance
A low-importance, high-rate data stream at UNI 1 can cause high-importance, low-rate packet loss at UNI n

Method used

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  • Optical network terminal, port speed limiting attribute configuration method and packet process method
  • Optical network terminal, port speed limiting attribute configuration method and packet process method
  • Optical network terminal, port speed limiting attribute configuration method and packet process method

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Embodiment Construction

[0038] Taking the ONU that provides Ethernet user ports in the GPON system, that is, the ONT as an example, the ONT of the present invention, its port speed limit attribute configuration method and message processing method will be described below. For the ONT that provides Ethernet user ports in the GPON system, the user network interface function module is a MAC bridge module, the internal interface is an internal Ethernet port, and the PON protocol processing module is a GPON protocol processing module.

[0039] see Figure 4 to Figure 7 , which is a schematic structural diagram of an ONT according to a specific embodiment of the present invention. The ONT of the present invention has realized the port speed limit function, and it comprises the port speed limit module that is connected with the user network interface, the GPON protocol processing module and the MAC bridge module that are connected by the internal Ethernet port, and the stored in the port speed limit module ...

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Abstract

The invention relates to an optical network terminal ONT, a method for configuring port rate limit attribute and a method for processing a message thereof. The optical network terminal comprises a passive optical network (PON) protocol processing module and a user network interface functional module which are connected through an internal interface. The optical network terminal also comprises a port rate limit module connected with the user network interface, wherein the port rate limit attribute is stored in the port rate limit module. The method for configuring the port rate limit attributeof the ONT comprises the following steps: A, a configuring terminal transmits a port rate limit attribute configuring command to the ONT; and B, the ONT stores the port rate limit attribute in a management entity. The method for processing the message of the ONT comprises the following steps: determining whether data velocity transmitted by the user network interface exceeds a set value in the port rate limit attribute of the user network interface or not, if so, a step of flow control is carried out on the user network interface. The invention ensures that the ONT can realize the function ofport rate limit, can prevent overflowing of a receiving buffer inside the ONT, and prevent an illegal user from initiating denial of service attack.

Description

technical field [0001] The present invention relates to the field of PON (Passive Optical Network, passive optical network), in particular to an optical network terminal (Optical Network Termination, ONT) in a PON system, a method for configuring its port speed limit attribute, and a message processing method. Background technique [0002] Current broadband access technologies are mainly divided into copper wire access technologies (such as various DSL technologies) and optical access technologies. An access network implemented by an optical access technology is called an optical access network (Optical Access Network, OAN). [0003] PON technology is an optical access technology for point-to-multipoint transmission. see figure 1 , which is a schematic diagram of the PON system. The PON system consists of OLT (Optical Line Terminal, Optical Line Terminal), ODN (Optical Distribute Network, Optical Distribution Network) and ONU (Optical Network Unit, Optical Network Unit), ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06H04L12/70
Inventor 杨素林
Owner HUAWEI TECH CO LTD
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