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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Archived copy as title All Wikipedia articles needing clarification Wikipedia articles needing clarification from September Avionics Full-Duplex Switched Ethernet AFDX is afdz data network, patented by international aircraft manufacturer Airbus for safety-critical applications that utilizes dedicated bandwidth while providing deterministic quality of service QoS.
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.
In one abstraction, it is possible to visualise the VLs as an ARINC style network each with one source and one or more destinations. However, total bandwidth cannot exceed the maximum available bandwidth on the network. A similar implementation [ clarify ] of deterministic Ethernet is used on the Boeing Dreamliner. Innovating together for the A XWB”. The architecture adopted by AgustaWestland is centered around the AFDX data network developed for the latest commercial airliners.
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.
switcb 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. The six primary aspects of an AFDX data network include full duplexredundancy, determinism, high speed performance, switched and profiled network.
This page was last edited on 10 Novemberat Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs. Archived from the original PDF on AgustaWestland asserts its independence in the cockpit”. Airbus adfx Rockwell Collins: Views Read Edit View history.
Also the switch, having a VL configuration table loaded, can reject any erroneous data transmission that may otherwise swamp other branches of the network. Therefore, in a network with multiple switches cascaded star topologythe total number of virtual links is nearly limitless. This high-performance port switch is certifiable to civil aerospace standards afex supports bandwidth-regulated traffic filtering and policing.
Each VL is frozen in specification to ensure that the network has a designed maximum traffic, hence determinism. The service is based on standard IEEE AFDX Switch Lab This product provides the full range of technical functionalities of our certifiable production switches making it the optimal solution for various applications. ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers.
In addition, AFDX can provide quality swktch service and dual link redundancy.
AFDX was designed as the next-generation aircraft data network. It specifies interoperable functional elements at the following OSI reference model layers:. However, some features of a real AFDX switch may be missing, such as traffic policing and redundancy functions. Data are read in a round-robin sequence among the virtual links with data to transmit. Sub-virtual links are assigned to a particular virtual link.
Ethernet family of local area network technologies. This type of network can significantly reduce wire runs and, thus, the overall weight of the aircraft. In case you wish to receive additional information, send an e-mail to products tttech.
Through the use of switvh pair or fiber optic cables, full-duplex Ethernet uses two separate pairs or strands for transmitting and receiving the data. The switches are designed to route an incoming frame from one, and only one, end system to a predetermined set of end systems.
AFDX is a worldwide registered trademark by Airbus. 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 virtual link ID is a bit swigch integer value that follows a constant bit field. From Wikipedia, the free encyclopedia. Many commercial aircraft use the ARINC standard developed in for safety-critical applications.
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. However, the number sub-VLs that may be created in a single virtual link is limited to four. Virtual links are unidirectional logic paths from the source end-system to all of the destination end-systems.
Retrieved May 28, Office for Harmonization in the Internal Market.