标准摘要
[中文适用范围]: ISO/IEC 9314 的这一部分定义了通过 FDDI 节点的路径中 PHY 功能的一致性测试。 图 1 是 FDDI 路径的功能框图。 该路径包含通过 FDDI 节点重复(即解码和重传)帧的必要功能。 当重复路径中存在 MAC 时,PHY 重复过滤器是可选的。 如果重复路径中没有MAC,则该功能在PHY中实现。 该测试标准不假设路径上是否存在 MAC,并且旨在在有或没有 MAC 的情况下进行操作。 无论重复过滤功能位于何处,它都会对其进行测试。 但是,如果存在 MAC,某些测试的结果可能会略有不同。 [外文原描述]: The Fibre Distributed Data Interface (FDDI) is intended for use in a high performance general purpose multi-station network and is designed for efficient operation with a peak data rate of 100 Mbit/s. It uses a Token Ring Architecture with optical fibre as the transmission medium. FDDI provides for hundreds of station operating over an extent of tens of kilometres. FDDI Physical Layer Protocol (PHY) specifies the upper sublayer of the Physical Layer for the FDDI, including the data encode/decode, framing and clocking, as well as the elasticity buffer, smoothing and repeat filter functions. This Abstract Test Suite (ATS) provides a conformance test for FDDI PHY.
英文名称Information technology - Fibre Distributed Data Interface (FDDI) - Part 21: Abstract test suite for FDDI physical layer protocol conformance testing (PHY ATS)