Protocol parsing method and device and layer-2 exchange system comprising protocol parsing device
A protocol parsing and service message technology, applied in the field of Layer 2 switching systems, can solve problems such as high real-time requirements, inability to achieve, performance degradation, etc., to achieve intelligent real-time monitoring, improved security, and fast computing.
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[0055] The specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0056] 1. A protocol analysis method is provided in this embodiment, the method comprising:
[0057] (1) Obtain the business message information transmitted through the S3MII bus;
[0058] The method for obtaining the service message information transmitted via the S3MII bus includes real-time monitoring of the service message information transmitted via the S3MII bus, obtaining bit by bit according to the local reference clock and the control signal of the processor, and storing it in units of bytes;
[0059] (2) Encapsulate as a data frame, and use the FPGA algorithm to quickly analyze each frame of data.
[0060] Encapsulation into a data frame includes: analyzing the frame header by byte, defining the frame format, and obtaining the data field carried after the frame start flag; figure 1 shown.
[0061] Select the frame flag...
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