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

An Ethernet, common technology, applied in the field of communications, can solve the problems of inability to meet the certainty of arrival time, low networking flexibility, low-priority packet output scheduling, etc., to overcome the generally low bandwidth utilization and improve flexibility. , the effect of improving bandwidth utilization

CN102427426BInactive Publication Date: 2015-06-03XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2015-06-03
Estimated Expiration
Not applicable · inactive patent

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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.
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Description

Technical field

[0001] The present invention belongs to the field of communication technology, and further relates to a method and device for simultaneously supporting Avionics Full Duplex Switched Ethernet (AFDX) and common Ethernet switching. The invention can be used in network switching, and by coordinating AFDX grouping and Ethernet grouping, the switch can support aviation full-duplex Ethernet AFDX and ordinary Ethernet switching at the same time. Background technique

[0002] With the development of aerospace technology, aircraft, spacecraft and other aircraft will use data switches to gradually replace the current dedicated line connections. The typical representative is aviation full-duplex Ethernet AFDX, and current aviation full-duplex Ethernet AFDX data switches High reliability, large bandwidth, and strong real-time performance, but it requires initial configuration and is not compatible with ordinary Ethernet. This will cause people in manned spacecraft to be unable...

Examples

Embodiment Construction

[0030] Attached below figure 1 , Attached figure 2 , To further describe the present invention:

[0031] Reference attachment figure 1 The device of the present invention includes eight modules: an input buffer module, a receiving scheduling module, a port lookup table module, a shared lookup table module, a filter police management module, an output queue module, a sending dispatch module, and an output buffer module.

[0032] Input buffer module, used to receive and buffer data packets, and provide packet characteristic information for receiving scheduling; the frame format of data packets is as follows: (Unit: Byte)

[0033]

[0034] Among them, the first 32 bits of the destination address of the aviation full-duplex Ethernet AFDX packet are used to distinguish whether the packet is an aviation full-duplex Ethernet AFDX packet, and the last 16 bits are the virtual link number used for recording purposes; ordinary Ethernet packets The destination address is its destination MAC ad...