End System Design Parameters of the ARINC 664 part 7
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The document discusses the end system design parameters of the ARINC 664 Part 7, describing end systems as network-connected devices such as desktops and IoT devices that facilitate user communication. Key parameters include virtual link management, bandwidth control, and redundancy management, highlighting the importance of performance metrics and network reliability. The presentation emphasizes that these systems are vital in a data network context, specifically within the AFDX® framework.
End System Design Parameters of the ARINC 664 part 7
- 1. End System Design Parameters of the ARINC 664 part 7 *This presentation is the intellectual property of Logic Fruit Technologies . Any plagiarism or misuse is punishable according to Indian Laws. November 2022
- 2. 2 ARINC 664: A remote computing system that interacts back and forth with a network to which it is connected is known as an end system. Desktops, laptops, smartphones, servers, workstations and Internet-of-Things (IoT) devices are some of the examples of end systems. Since they sit at the edge of a network, these are labeled as end systems. The end-user communicates with the end systems at all times. End systems are the equipment that provides data or services.
- 3. 3 But how can one observe a system is functionally accurate as per the requirements and works effectively? Every system has its parameters defined to measure the performance and to keep a check on the system’s design as per the specifications. The AFDX® data network based on the ARINC 664-part 7 protocol has its end system parameters described below. The below figure shows the topology view of the AFDX® protocol.
- 4. Virtual Link Management AFDX® specifications state the primary responsibility of the Virtual Links (VLs) is the management of the transmission and receipt of data. A maximum of 128 VLs can be handled by an end system and can be configured for any desired configuration, such as transmitting four VLs and receiving six VLs, with three sub-VLs consisting of one receiving VL. For each VL and sub-VL, the end system maintains a FIFO queue. 4
- 5. Bandwidth Control Toshiba mentions in one of its white papers, the ‘always on/connected cars” are emphasizing to increase the available bandwidth for in-vehicle data communications and the latest semiconductor technologies are helping in building solutions to cater to the system demands. Thus, one can certainly consider that bandwidth comes out as a crucial design parameter. Between the frame payload and the frame transmission interval, the control mechanism for bandwidth varies. A transmission time slot is effectively allocated to each VL, within an assigned bandwidth allocation gap, a VL will transmit a frame. 5
- 6. Redundancy Management An AFDX network is designed such that there are 2 distinct paths between each ES (including MACs, PHYs, and cabling), as well as redundant switches to protect the network from a failure at or below the MAC level. 6 To know more about End System Design Parameters of the ARINC 664 part 7, see https://www.logic-fruit.com/blog/arinc- standard/arinc-664-part-7/
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