Method and device for simultaneously supporting AFDX (Avionics Full-duplex Switched Ethernet) and common Ethernet switching

Abstract

The invention discloses a method and device of simultaneously supporting AFDX ((Avionics Full-duplex Switched Ethernet) and common Ethernet switching, which mainly solves the problem that AFDX switching equipment in the prior art cannot simultaneously support the AFDX and common Ethernet switching. The method comprises the steps of: (1), extracting grouping feature information; (2), receiving scheduling groups; (3), searching a forwarding table; (4), filtering and policing; (5), enqueueing the group; and (6) sending the scheduling groups. The device comprises an input caching module, a receiving scheduling module, a port lookup table module, a sharing lookup table module, a filtering and policing module, an output queue module, a sending scheduling module, and an output caching module. The invention has the advantages of improving the flexibility of an AFDX networking mode and the feasibility that an Ethernet information terminal in a manned space flight domain machine is accessed to the AFDX, and sufficiently utilizing the residual bandwidth in the AFDX, and effectively improving the bandwidth utilization rate of the AFDX, and is applicable to network and exchange aspects.

Description

technical field [0001] The invention belongs to the technical field of communication, and further relates to a method and a device for simultaneously supporting aviation full-duplex Ethernet (Avionics Full Duplex Switched Ethernet, AFDX) and ordinary Ethernet switching. The invention can be used in network switching, and through coordinating AFDX grouping and Ethernet grouping, the switch can simultaneously support aviation full-duplex Ethernet AFDX and common Ethernet switching. Background technique [0002] With the development of aerospace technology, data switches will be used in aircraft, spacecraft and other aircraft to gradually replace the current dedicated line connections. The typical representative is aviation full-duplex Ethernet AFDX, and the current aviation full-duplex Ethernet AFDX data switch High reliability, large bandwidth, and strong real-time performance, but it requires initial configuration, and is not compatible with ordinary Ethernet, which will cau...

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Problems solved by technology

[0004] The disadvantage of this method is that the scheduling method it proposes does not support ordinary Ethernet packets, which makes the bandwidth utilization rate of the aviation full-duplex Ethernet AFDX switch low and the networking flexibility is low; there is no Coordinating the output scheduling of high- and low-priority packets is only to reduce the forwarding delay of high-priority packets as much as possible, which cannot meet the requirements of the deterministic arrival time of aviation full-duplex Ethernet AFDX packets

[0006] The disadvantage of this method is that the method it proposes does not support switches to forward aviation full-duplex Ethernet AFDX packets, so it cannot be applied to aviation full-duplex Ethernet AFDX switches

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