ARINC 664 of FaststreamTechnologies normally describes IEEE 802.3 network that uses IP for addressing and transport protocols (TCP and UDP). ARINC 664, currently undergoing advocacy, which defines a set of best execution and requirements for any next generation ADN. The specification is split into several parts.
Part 7 of the ARINC 664 specification defines a special application for a full-duplex, deterministic aircraft data network referred to as AFDX, the focus of this document.
AFDX( Avionics Full Duplex Switched Ethernet ) of Faststream Technologies is a particular approach for a network amenable with ARINC 664. 802.3 Ethernet does not recommend the toughness required for an avionics system though it offers low cost and high speed due to extensive commercial usage . The lack of assured bandwidth and Quality of Service (QoS) is a major drawback of IEEE 802.3.In Faststream Technologies AFDX attempts to resolve these matters while granting the use of as much commercial 802.3 hardware as possible. Our AFDX bestows up to 24 ESes star topology to a switch which can be cascaded to different switches in the network. This purposeful network allows for link dismissal(dual physical links), guaranteed bandwidth, and QoS. Part 7 of above specification permits for the mapping of other bus standards (e.g., ARINC 429 or MIL-STD-1553) onto the network and grants for communication with additional ARINC-664-amenable but non deterministic networks through gateways and routers.
Overview of AFDX:
A AFDX of Faststream Technologies addresses the limitation of IEEE 802.3 Ethernet by assuming concepts from the telecom standard, Asynchronous Transfer Mode. These augmentation for standard Ethernet create feasible for a deterministic network with guaranteed bandwidth and QoS. The major aspects of AFDX are as follows: