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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Also the switch, having a VL configuration table loaded, can reject any erroneous adinc transmission that may otherwise swamp other branches of the network. Further 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 buffering, but AFDX specifies that latency is measured from the traffic regulator function anyway. This is the maximum rate data can be sent, and it is guaranteed to be sent at that interval.

However, total bandwidth cannot exceed the maximum available bandwidth on the network. AgustaWestland asserts its independence in the cockpit”.


Sub-virtual links are assigned to a particular virtual link. From Wikipedia, the free encyclopedia.

This page was last edited on 10 Novemberat The architecture adopted by AgustaWestland is centered around the AFDX data network developed for the latest commercial airliners. Webarchive template wayback links CS1 maint: Through the use of twisted 6664 or fiber optic cables, full-duplex Ethernet uses two separate pairs or strands aric transmitting and receiving the data.


The virtual link ID is a bit unsigned integer value that follows a constant bit field.

There are two speeds of transmission: AFDX is a worldwide registered stzndard by Airbus. AFDX was designed as the next-generation aircraft data network. 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.

Retrieved May 28, Archived from the original PDF on AFDX extends standard Ethernet to provide high data integrity and deterministic timing. This ADN operates without the use of a bus controller thereby increasing the reliability of the network architecture. Real-time solution on the A” PDF. 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.

There can be one or more receiving end systems connected within each virtual link.

This type of network can significantly reduce wire runs and, thus, the overall stanfard of the aircraft. Many commercial aircraft use the ARINC standard developed in for safety-critical applications. Each virtual link is allocated dedicated bandwidth [sum of all VL bandwidth sgandard gap BAG rates x MTU] with the total amount of bandwidth defined by the system integrator.

Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs.

AFDX/ARINC Interface Chip – MEN

ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers. In one abstraction, it is possible to visualise the VLs as an ARINC style network each with one source and one or more destinations. 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 srandard have a switching capacity that is the sum of all of its physical ports. 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.


Ethernet family of local area network technologies. Views Read Edit View history. Bi-directional communications must therefore require the specification of a complementary VL. Retrieved from ” https: It specifies interoperable functional elements at the following Standsrd reference model layers:.

Avionics Full-Duplex Switched Ethernet

Therefore, in a network with multiple switches cascaded star topologythe total number of virtual links is nearly limitless. AFDX was developed by Airbus 64 for the A, [3] initially to address real-time issues for flight-by-wire system development. Data are read in a round-robin sequence among the virtual links with data to transmit. The switches are designed to route an incoming frame from one, and only one, stancard system to a predetermined set of end systems.

Avionics Full-Duplex Switched Ethernet – Wikipedia

Multiple switches can be bridged together in a cascaded star topology. Each VL is frozen in specification to ensure that the network has a designed maximum traffic, hence determinism.

In addition, AFDX can provide quality of service and dual link redundancy.