Ethernet exchange function implementation system and Ethernet exchange function implementation method based on domestic FPGA (field programmable gate array)

Abstract

The invention discloses an Ethernet exchange function implementation system and an Ethernet exchange function implementation method based on a domestic FPGA (field programmable gate array). The Ethernet exchange function implementation system comprises an Ethernet port physical layer module, an FPGA device, a microprocessor and an external SRAM which are in sequential connection, wherein the Ethernet port physical layer module is used for being connected with an Ethernet port, processing data of an Ethernet port physical layer and transmitting the data to the FPGA device; the FPGA device is used for completing buffering of Ethernet port MAC as well as a layer-2 / layer-3 forwarding processing process; the microprocessor is used for implementing configuration of an internal memory space of the FPGA and a status inquiry function and processing Ethernet data packets; the external SRAM is used for temporary storage of forwarded network packets. The Ethernet exchange function implementation system has the advantage that a corresponding register of the FPGA is configured through software to achieve Ethernet exchange and CPU software is provided for processing an Ethernet data interface, sothat commonly used Ethernet exchange business processing can be supported flexibly and conveniently.

Description

technical field [0001] The invention relates to the technical field of electronic information communication, in particular to a domestic FPGA-based system and method for realizing Ethernet switching functions. Background technique [0002] The specification of the physical / electrical characteristics of the Ethernet interface conforms to the 802.3 protocol, and it is a standard communication interface commonly used in the world at present. The commonly used Ethernet interface in the chassis of communication equipment is 1000Base-T at a gigabit rate, and its physical rate is 1000 Mbps. As an implementation of the physical layer in the OSI seven-layer protocol, the Ethernet interface has been widely used. [0003] MAC is Media Access Control, which is the sub-layer protocol of media access control. This protocol is located in the lower half of the data link layer in the OSI seven-layer protocol, and is mainly responsible for controlling and connecting the physical medium of th...

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