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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Avionics Full-Duplex Switched Ethernet AFDX is a data network, patented by international aircraft manufacturer Airbus for safety-critical applications that utilizes dedicated bandwidth while providing deterministic quality of service QoS.
AFDX® / ARINC 664 Part 7 Switch for Flight Test
The architecture adopted by AgustaWestland is centered around the AFDX data network developed for the latest commercial airliners. Sub-virtual links are assigned to a particular virtual link. Virtual links are unidirectional logic paths from the source end-system to all of the destination end-systems.
The switches are designed to route an incoming frame from one, afds only one, end system to a predetermined set of end systems.
AFDX was developed by Airbus Industries for the A,  initially to address real-time issues for flight-by-wire system development. In case you wish to receive additional information, send an e-mail to products tttech. It specifies interoperable functional elements at the following OSI reference model layers:. ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers.
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.
Retrieved May 28, This is the maximum rate data can be sent, and it is guaranteed to be sent at that interval. To get access to the document please fill in the following form. Bi-directional communications must therefore require the specification of a complementary VL. Additionally, there can be sub-virtual links sub-VLs that are designed to carry less critical data. The service is based on standard IEEE Multiple switches can be bridged together in a cascaded star topology.
Through the use of twisted pair or fiber optic cables, full-duplex Ethernet uses two separate pairs or strands for transmitting and receiving the data.
AFDX® Products | AIM – Online
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. 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 swith within set parameters.
However, some features of a real AFDX switch may be missing, such as traffic policing and redundancy functions. There are two speeds of transmission: Office for Harmonization in the Internal Market. Each virtual link is allocated dedicated bandwidth [sum of all VL bandwidth allocation gap BAG rates x MTU] with the total amount of bandwidth defined by the system integrator.
From Wikipedia, the free encyclopedia. There can be one or swihch receiving end systems connected within each virtual link. Retrieved from wwitch https: Airbus and Rockwell Collins: This high-performance port switch is certifiable to civil aerospace standards and supports bandwidth-regulated traffic filtering and policing. However, the number sub-VLs that may be created in a single virtual link is limited to four. The virtual link ID is a bit unsigned integer value that follows a constant bit field.
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.
Also the switch, having a VL configuration table loaded, can reject any erroneous data transmission that may otherwise swamp other branches of the network.
The drawback is that it requires custom hardware which can add significant cost to the aircraft. Ethernet family of local area network technologies. Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs.
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.
Therefore, in a network with multiple switches cascaded star topologythe total number of virtual links is nearly limitless. Views Read Edit View history. Real-time solution on the A” PDF.