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Method for identifying AAL5 frame package format automatically

An automatic identification and packaging format technology, applied in the field of network communication, can solve the problems of increasing the maintenance workload of the central office, and achieve the effect of reducing maintenance management costs and maintenance costs

Inactive Publication Date: 2006-11-01
HUAWEI TECH CO LTD
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Problems solved by technology

Therefore, if the user's CPE equipment is modified, the broadband access equipment at the central office also needs to be modified accordingly, which will increase the maintenance workload of the central office.

Method used

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  • Method for identifying AAL5 frame package format automatically

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Embodiment Construction

[0045] The core of the present invention is that an identification function that may adopt six kinds of AAL5 frame encapsulation formats in the network is set on the broadband access equipment, so that the broadband access equipment can automatically identify the received AAL5 frame sent by the CPE (customer premises equipment). The adopted encapsulation format facilitates corresponding processing according to the encapsulation format and supports the realization of corresponding services.

[0046] The realization of the present invention makes the operator only need to configure the VPI / VCI information when he only knows the VPI / VCI configured by the CPE equipment, but does not know the specific protocol encapsulation type carried by the CPE terminal in the ATM AAL5 frame, and the service can be realized opened.

[0047] The present invention mainly makes corresponding improvements in the broadband access equipment, so that it can automatically identify and process six kinds ...

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Abstract

A method that distinguishes the seal form of the AAL5 frame automatically, it includes: first, sets frame top information module of the AAL5 frame in the virtual connection multiplying VCMAX seal form and the logical link control LLC seal form of the broadband access equipment; then, when receiving the AAL5 frame, analyzes the frame top information of the AAL5 frame, confirm the seal form of the receiving AAL5 frame by comparing the top information and the fixed frame top information module. The invention can distinguishes the frame protocol type that load the ATM AAL5 layer in the CPE equipment, in order to separate the maintenance of the terminal CPE equipment and the maintenance of the broadband access equipment of the local end, reduce the maintenance manage cost effectively. Moreover, when the seal type of the CPE equipment is unknown, the local end can open the corresponding broadband operation.

Description

technical field [0001] The invention relates to the technical field of network communication, in particular to a method for automatically identifying the AAL5 frame encapsulation format. Background technique [0002] At present, xDSL (various digital subscriber line) technology has been widely used in broadband access. In the user-side line in the broadband access network, six frame protocol encapsulation formats carried on the ATM AAL5 (Asynchronous Transfer Mode) layer are usually used for encapsulation and transmission of services. [0003] The six packaging formats mentioned specifically include: [0004] (1) Three LLC (Logical Link Control) encapsulation formats: LLC 1483B, LLCIPoA, LLC PPPoA; [0005] (2) Three VCMUX (virtual connection multiplexing) encapsulation formats: VCMUX 1483B, VCMUXIPoA, VCMUX PPPoA, among which 1483B is only used to carry Ethernet / 802.3 frames. [0006] According to actual needs, the operator hopes that the broadband access equipment at th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L29/06
Inventor 谢卫平赵求鹏
Owner HUAWEI TECH CO LTD
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