Our ARINC Protocol Training covers the ARINC standard, its implementation, as well as comparisons with standard IEEE Ethernet. Hands‐on lab. The latest ARINC data bus specification is known as ARINC This bus standard is based on an Airbus Industries proprietary data bus known as AFDX. Avionics Full Duplex Ethernet and the Time Sensitive Networking Standard. 2. Topics. Presented by. SECTION 2. ✓ AFDX® Detailed.

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Sub-virtual links are assigned to a particular virtual link.

This page was last edited on 10 Novemberat The switches are designed to route an incoming frame from one, and only one, end system to a predetermined set of end systems. Therefore, in a network with multiple switches cascaded star topologythe total number of virtual links is nearly limitless. The virtual link ID is a bit unsigned integer value that follows a constant bit field. A similar implementation [ clarify ] of deterministic Ethernet is used on the Boeing Dreamliner.

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Through the use of twisted pair stanxard fiber optic cables, full-duplex Ethernet uses two standare pairs or strands for transmitting and receiving the data. Archived copy as title All Wikipedia articles needing clarification Wikipedia articles needing clarification from September ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers.

Ethernet family of local area network technologies.

Archived from the original PDF on Views Read Edit View history. Data are read in a round-robin sequence among the virtual links with data to transmit. The network is designed in such a way that all critical traffic is prioritized using QoS policies so delivery, latency, and jitter are all guaranteed to be within set parameters.


The architecture adopted by AgustaWestland is centered around the AFDX data network developed for the latest commercial airliners. AFDX was designed as the next-generation aircraft data network. Avionics Full-Duplex Switched Ethernet AFDX is a data network, patented by international aircraft manufacturer Airbus[1] for safety-critical applications that utilizes dedicated bandwidth while providing deterministic quality of service QoS.

However, some features of a real AFDX switch may be missing, such as traffic policing and redundancy functions. In one abstraction, it is possible to visualise the VLs as an ARINC style network each with one source and one or more destinations.

Avionics Full-Duplex Switched Ethernet

The switch must also be non-blocking at the data rates that are specified by the system integrator, and in practice this may mean that the switch shall have a switching capacity that is the sum of all of its physical ports. In addition, AFDX can provide quality of service and dual link redundancy.

By adding key elements from ATM to those already found in Ethernet, and constraining the specification of various options, a highly reliable full-duplex deterministic network is created providing guaranteed bandwidth and quality of service QoS.

Retrieved from ” https: Innovating together for the A XWB”. AFDX is a worldwide registered trademark by Airbus. This type of network can significantly reduce wire runs and, thus, the overall weight of the aircraft. There can be one or more receiving end systems connected within each virtual link.

Real-time solution on the A” PDF. The six primary aspects of an AFDX data network include full duplexredundancy, determinism, high speed performance, switched and profiled network. Basing on standards from the IEEE AFDX was developed by Airbus Industries for the A, [3] initially to address real-time issues for flight-by-wire system development. Stanadrd a redundant pair of networks is used to improve the system integrity although a virtual link may be configured to use one or the other network only.

Also sub-virtual links do not provide guaranteed bandwidth or latency due to the aarinc, but AFDX specifies that latency is measured from the traffic regulator function anyway. Many commercial aircraft use the ARINC standard developed in for safety-critical applications.


Avionics Full-Duplex Switched Ethernet – Wikipedia

However, the number sub-VLs that may be created in a single virtual link is limited to four. The drawback is that it standad custom hardware which can add significant cost to the aircraft. ARINC operates in such a way that its single transmitter communicates in a point-to-point connection, thus requiring a significant amount of wiring which amounts to added weight.

There are two speeds of transmission: Also the switch, having a VL configuration table loaded, can reject any erroneous data transmission that may otherwise swamp other branches of the network.

Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs. There is no specified limit to the number of virtual links that can be handled by each end system, although this will be determined by the BAG rates and maximum frame size specified for each VL versus the Ethernet data rate.

Additionally, there can be sub-virtual links sub-VLs that are designed to carry less critical data. Airbus and Rockwell Collins: Bi-directional communications must therefore require the specification of a complementary VL. From Wikipedia, the free encyclopedia. Each VL is frozen in specification to ensure that the network has a designed maximum traffic, hence determinism. AgustaWestland asserts its independence in the cockpit”.

This is the maximum rate data can be sent, and it is guaranteed to be sent at that interval. AFDX extends standard Ethernet to provide high data integrity and deterministic timing.