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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AFDX® / ARINC 664 Part 7 Switch for Flight Test
The service is based on standard IEEE 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.
The switches are designed to route an incoming frame from one, and only one, end system to a predetermined set of end systems. Each switch has filtering, policing, and forwarding functions that should be able to process at least VLs. Archived copy as title All Wikipedia articles needing clarification Wikipedia articles needing clarification from September This page was last edited on 10 Novemberat A similar implementation [ clarify ] of deterministic Ethernet is used on the Boeing Dreamliner.
Archived from the original PDF on It utilizes dedicated bandwidth-regulated traffic control while providing deterministic Quality of Service QoS. 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. 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. 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 from ” https: ARINC utilizes a unidirectional bus with a single transmitter and up to twenty receivers. Views Read Edit View history. 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.
Also the switch, having a VL configuration table loaded, can reject any erroneous data transmission that may otherwise swamp other branches of the network. In addition, AFDX can provide quality of service and dual link redundancy. There can be one or more receiving end systems connected within each virtual link.
There are two speeds of transmission: Office for Harmonization in the Internal Market. The virtual link ID is a bit unsigned integer value that follows a constant bit field.
Data are read in a round-robin sequence among the swigch links with data to transmit. 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 – Wikipedia
Virtual links are unidirectional logic paths from the source end-system to all of the destination end-systems. Additionally, there can be sub-virtual links sub-VLs that are designed to carry less critical data. Each VL is frozen in specification to ensure that the network has a designed maximum traffic, hence determinism. However, total bandwidth cannot exceed the maximum available bandwidth on the network.
This product provides the full range of technical functionalities of our certifiable production switches making swltch the optimal solution swigch various applications. However, the number sub-VLs that may be created in a single virtual ardx is limited to four. Bi-directional communications must therefore require the specification of a complementary VL. 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.
Multiple switches can be bridged together in a cascaded star topology. To get access to the document please fill in the following form.
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. Basing on standards from the IEEE This type of network can significantly reduce wire runs and, thus, the overall weight of the aircraft.
The six primary aspects of an AFDX data network include full duplexredundancy, determinism, high speed performance, switched and profiled network.