A store-and-forward device and method applied to a store-and-forward mechanism switch

Abstract

The embodiment of the present invention discloses a store-and-forward device and method applied to a store-and-forward switch. In the store-and-forward device, the time slice scheduling module is used to generate n*n time slices according to the number of switching ports; the receiving module , which is used to write the last complete data and write fragmented data at the same time when the corresponding port write time slice is valid and there are fragmented data, and write the last complete data to the external memory, and write the fragmented data to the fragment Memory; sending module, used to generate and read the last complete data and read fragmented data at the same time when the corresponding port read time slice is valid and there is fragmented data, and read the last complete data from the external memory, and read the last complete data from the external memory. Fragment data is read from the fragment memory. The solution provided by the embodiment of the present invention can effectively reduce the quantity of external memory, PCB wiring area and product power consumption, and meet the bandwidth requirement of the switch.

Description

technical field [0001] The present application relates to but not limited to the technical field of network communication, especially a store-and-forward device and method applied to a store-and-forward mechanism switch. Background technique [0002] As an emerging avionics bus standard, Avionics Full Duplex Switched Ethernet (AFDX) is based on ordinary Ethernet and adds flow control strategies to both terminals and switches to ensure Real-time performance of data transmission in avionics system. [0003] As the number of ports required by the switch increases and the port rate increases from 100M to 1000M, the data exchange bandwidth required by the switch will continue to increase. Therefore, how to ensure sufficient bandwidth for data exchange is a key technology in switch design. Taking a 24-port Gigabit switch as an example, its bandwidth requirement has reached 48Gbps, and because the length of the frame data is random, it cannot be equipped with the broadband of the...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the above-mentioned technical problems, the embodiment of the present invention provides a store-and-forward device and method applied to a store-and-forward mechanism switch to solve the problem of low actual effective bandwidth utilization caused by frame fragment data reading and writing in the AFDX network, thereby Meet the bandwidth requirements of gigabit switches

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