ISO/IEC 14165-122:2005 信息技术 光纤维通道 第122部分: 抗弯回路-2 (FC-AL-2)

标准编号:ISO/IEC 14165-122:2005

中文名称:信息技术 光纤维通道 第122部分: 抗弯回路-2 (FC-AL-2)

英文名称:Information technology — Fibre Channel — Part 122: Arbitrated Loop-2 (FC-AL-2)

发布日期:2005-06

标准范围

光纤通道为上层协议(ULP)提供了通用数据传输工具,如智能外围接口(IPI)和小型计算机系统接口(SCSI)命令集、高性能并行接口(HIPPI)数据帧、IP(互联网协议)、ANSI/IEEE 802.2等。本国际标准FC-AL-2规定了对光纤通道物理和信令接口(FC-PH)的信令协议ISO/IEC 14165-111的增强,以支持两个或多个端口之间的通信,而无需使用结构拓扑。它定义了保留FC-PH中规定的端口功能的L_端口。仲裁环路拓扑在环路中连接多个通信点,无需交换机;这是一种分布式拓扑结构,其中每个L_端口包含建立环路所需的最小功能。连接到仲裁环路的单个FL_端口允许多个NL_端口连接到结构。每个L_端口可以使用自发现程序来查找正确的操作模式,而无需外部控制。

Fibre Channel provides a general data transport vehicle for Upper Level Protocols (ULPs) such as Intelligent Peripheral Interface (IPI) and Small Computer System Interface (SCSI) command sets, the High-Performance Parallel Interface (HIPPI) data framing, IP (Internet Protocol), ANSI/IEEE 802.2, and others.This international standard, FC-AL-2, specifies an enhancement to the signaling protocol of the Fibre Channel Physical and Signalling Interface (FC-PH), ISO/IEC 14165-111, to support communication among two or more Ports without using the Fabric topology. It defines L_Ports that retain the functionality of Ports as specified in FC-PH. The Arbitrated Loop topology attaches multiple communicating points in a loop without requiring switches; it is a distributed topology where each L_Port includes the minimum necessary function to establish a Loop circuit. A single FL_Port connected to an Arbitrated Loop allows multiple NL_Ports to attach to a Fabric. Each L_Port may use a self-discovering procedure to find the correct operating mode without the need for external controls.

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