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DDC’s AFDX®/ARINC Part 7 Switch provides the key element of an AFDX network—the physical infrastructure to interconnect end systems and regulate. The AFDXEnd System Pro is certifiable to civil aerospace standards and enables safety-critical data transfer between a computer and an AFDX switch. 10// Mbit/s 24+1 port AFDX® switch for rapid system development of all technical functionalities of TTTech’s certifiable AFDX production switches.

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The architecture adopted by AgustaWestland is centered around the AFDX data network developed for the latest commercial airliners.

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

This page was last edited on 10 Novemberat Each VL is frozen in specification to ensure that the network has a designed maximum awitch, hence determinism.

AFDX® Products | AIM – Online

Retrieved May 28, 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. It swtch dedicated bandwidth-regulated traffic control while providing deterministic Quality of Service QoS. Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs. The virtual link ID is a bit unsigned integer value that follows a constant bit field.


Virtual links are unidirectional logic paths from swittch source end-system to all of the destination end-systems. Multiple switches can be bridged together in a cascaded star topology.

Archived from the original PDF on AgustaWestland asserts its independence in the cockpit”. Innovating together for the A XWB”. switchh

This type of network can significantly reduce wire runs and, thus, the overall weight of the aircraft. 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. 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.

This high-performance port switch is certifiable to civil aerospace standards and supports bandwidth-regulated traffic filtering and policing. By using this site, you agree to the Terms of Use and Privacy Policy.

AFDX® / ARINC 664 Part 7 Switch for Flight Test

It specifies interoperable functional elements at the following OSI reference model layers:. 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. Real-time solution on the A” PDF. However, the number sub-VLs that may be created in a single virtual link is limited to four. Basing on standards from the IEEE 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.


ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers. Sub-virtual links are assigned to a particular virtual link. This ADN operates without the use of a bus controller thereby increasing the reliability of the network architecture.

Many commercial aircraft use the ARINC standard developed in for safety-critical applications. A data word consists of 32 bits communicated over a twisted pair cable using the bipolar return-to-zero modulation.

Avionics Full-Duplex Switched Ethernet

There are two speeds of transmission: AFDX was developed by Airbus Industries for the A, [3] initially to address real-time issues for flight-by-wire system development.

AFDX is a worldwide registered trademark by Airbus.

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. The service is based on standard IEEE By clicking “Download” or “Download without registration” you agree to our Privacy Policy.