Time delay index test device and test method for exchange technology of AFDX (Avionics Full Duplex Switched Ethernet Network) exchange product

A switching technology and index testing technology, which is applied in the AFDX switching product switching technology delay index testing device and testing field, can solve the problems of limited number of forwarding channels and inability to comprehensively evaluate the index level of the product under test, etc.
CN107769997AActive Publication Date: 2018-03-06CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINESE AERONAUTICAL RADIO ELECTRONICS RES INST
Publication Date
2018-03-06

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Abstract

The invention discloses a time delay index test device for an exchange technology of an AFDX (Avionics Full Duplex Switched Ethernet Network) exchange product. The device comprises a network terminalsimulation module and a network channel construction module; port 1 to port N of the network channel construction module establish an external connection with N ports of a measured product one by one;port 1+N establishes an external connection with port 2+N; port 4+N respectively establishes an internal connection with port 1 to port N and port 1+N; port 3+N establishes an internal connection with port 2+N; port 4+N establishes an external connection with a port A of the network terminal simulation module; and port 3+N establishes an external connection with a port B of the network terminal simulation module. The time delay index test device for the exchange technology of the AFDX exchange product provided by the invention can collect the technical delay on all forwarding channels of themeasured product very quickly, thereby achieving effective evaluation of technical delay indexes, and providing guarantees for the certainty of an aviation network bus.
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Description

technical field

[0001] The invention relates to a test device and a test method for testing the switching technology delay index of AFDX (aviation electronics full-duplex switching Ethernet) switching products. Background technique

[0002] Avionics full-duplex switched Ethernet is a high-speed network with a star topology at the core of a switch. This network uses virtual links as virtual carriers for network data transmission, and controls the same virtual link (or belongs to The bandwidth occupied by different virtual links of the same group of credits) can effectively allocate network resources, avoid network congestion, and enhance network certainty.

[0003] The switching products used in avionics full-duplex switched Ethernet are the core equipment of the network, and the delay of switching technology has an important impact on the determinism of network transmission.

[0004] The switching technology delay index of traditional avionics full-duplex switched Ethernet-...

Claims

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