Byte-based filtering and policing system and method of avionics full duplex switched Ethernet (AFDX) switch

Abstract

The invention discloses a byte-based filtering and policing tube system and a byte-based filtering and policing tube method of an avionics full duplex switched Ethernet (AFDX) switch, mainly solves the problem of frame loss under the condition of larger jitter and different frame lengths. The system comprises a cache, a lookup table, a filtering module, a policing tube module and a determination module, wherein the cache stores data frames and extracts the virtual link (VL) and the frame information of the data frames; the VL is used for searching for the filtering parameters of the data frames in the lookup table; the filtering parameters are compared with the frame information in the filtering module to determine whether the data frames meet a filtering requirement; a byte leaky bucket algorithm is used for controlling data frame traffic in the policing tube module simultaneously; and finally, the determination module is used for determining whether the data frames are permitted to enter a switched network. According to the invention, the implementation method is simple, system resources are saved, the pass rate of the data frames is high, the network switching performance can be improved, and the system and method can be used for filtering data frames and controlling flow rate in an AFDX.

Description

technical field [0001] The invention relates to the field of avionics network switching, in particular to a byte-based filtering police management system and method of an aviation full-duplex switched Ethernet AFDX switch, which can be used for filtering and flow control of data frames in a switching network. Background technique [0002] Aviation full-duplex switched Ethernet AFDX was first designed by Airbus Corporation based on 802.3 Ethernet technology, which is a new generation management data network ADN for A380 large passenger aircraft. Although 802.3 Ethernet can provide high transmission speed, low cost and good commercial availability, 802.3 Ethernet lacks the guarantee for bandwidth and quality of service, which is exactly necessary for aviation communication network. Therefore, AFDX introduces the virtual link VL concept in ATM to realize the bandwidth of the task and the quality of service QoS guarantee. [0003] According to the seventh part of the aviation b...

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Problems solved by technology

[0008] Aiming at the defects or deficiencies in the prior art, the purpose of the present invention is to provide a filter police management system and method based on a byte-based AFDX switch to solve the problem of frame loss in the case of large jitter and different frame lengths , so as to meet the data transmission requirements in different links, expand the data transmission bandwidth, and increase the capacity of the AFDX switching network

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