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Data frame transmission processing method

A processing method and data frame technology, applied in the direction of digital transmission system, transmission system, data exchange network, etc., can solve the problem of frame loss, data loss, and inability to accommodate GFP frames at the receiver, so as to solve the problem of packet loss and prevent frame loss. Effect

Active Publication Date: 2007-01-31
HUAWEI TECH CO LTD
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Problems solved by technology

[0007] For the same transmission channel, if the MTU of the sender is larger than the MTU of the receiver, the payload length of the GFP frame sent by the sender is likely to be larger than the MTU of the receiver, so the buffer of the receiver cannot accommodate the GFP frame, and The GFP frame is discarded, resulting in data loss
In particular, once the MTU of the sender is much larger than the MTU of the receiver, the probability that the payload length of the GFP frame sent by the sender is greater than the MTU of the receiver is high, which will cause a very serious frame loss problem at the receiver.

Method used

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Embodiment Construction

[0031] The present invention will be described below in conjunction with the accompanying drawings and specific embodiments.

[0032] The method described in the present invention is applicable to all similar figure 2 Shown is a communication system that utilizes a buffer to transmit data frames. Here, the present invention will be described by taking a communication system using GFP as an example.

[0033] image 3 It is a flowchart of data frame transmission processing according to an embodiment of the present invention. see image 3 , the process includes:

[0034] Step 301. When or after the data communication connection is established, the receiving end of the data transmission notifies the sending end of the maximum transmission unit MTU of the receiving end. The MTU described in the present invention is the length of the maximum data unit that a certain synchronous transmission channel of the communication equipment can receive, and its specific value can utilize ...

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Abstract

The invention discloses a data frame transmission processing method, comprising: A. a receiving end of data transmission informs a transmitting end of its maximum transmission unit (MTU); B. the transmitting end judges whether its own MTU is larger than that of the receiving end: if yes, using the MTU of the receiving end as threshold to transmit data frame and otherwise using its own MTU as threshold to transmit data frame. And it can prevent frame loss of the receiving end caused by MTU difference between transmitting and receiving equipment in the data transmission.

Description

technical field [0001] The invention relates to a data frame transmission technology in a communication system, in particular to a data frame transmission processing method using a maximum transmission unit (MTU, Maximum Transmission Unit) to perform threshold control on the transmitted data frame. Background technique [0002] At present, in order to make full use of the existing Synchronous Optical Network (SONET) / Synchronous Digital Hierarchy (SDH) and Optical Transport Network (OTN), telecom operators adopt the Generic Framing Procedure (GFP, Generic Framing Procedure) to integrate multiple business forms ( For example, the data of Ethernet, IP / point-to-point protocol, MPLS, etc.) are mapped to SONET / SDH network and OTN for transmission. [0003] GFP is a scheme proposed by the International Telecommunication Union Telecommunication Standardization Organization (ITU-T). For the specific scheme, refer to the standard ITU-T G.7041 / Y.1303. The following briefly introduces ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/00H04L29/02
CPCH04L47/36H04L47/10
Inventor 蒋章震
Owner HUAWEI TECH CO LTD
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