ISO/IEC INTERNATIONAL STANDARD 14776-222 First edition 2005-02 Information technology - Small computer system interface (Scsl)- Part 222: Fibre Channel Protocol for SCSl, Second Version (FCP-2) IEC ISO Reference number ISO/IEC 14776-222:2005(E) Not for Resale yhemainaanaioSandardizato orneworkingmitedwithout licene fromH Not for Resale ISO/IEC INTERNATIONAL STANDARD 14776-222 First edition 2005-02 Information technology Small computer system interface (Scsl) - Part 222: Fibre Channel Protocol for ScSl, Second Version (FcP-2) @IS0/IEC 2005 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any ISO/IEC Copyright Office · Case postale 56· CH-1211 Geneve 20 · Switzerland EC PRICE CODE XB ISO For price, see current catalogue Copyright International Organization for Standardization Not for Resale - 2 14776-222 @ ISO/IEC:2005(E) CONTENTS Foreword Introduction. .12 Scope .14 2 Normative references.... .14 2.1 Internationalstandards... .14 2.2 International standards under development...... 2.3 Other references.... .14 3 3.1 Definitions... .15 3.2 Abbreviations.. ..20 3.3 Keywords .. .21 3.4 Editorial conventions . ..22 4 General ..24 4.1 Structure and concepts... .24 4.2 Device management........ 4.3 Precise delivery of ScSI commands . ..27 4.4 Confirmed completion of FCP I/O Operations.... ..28 4.5 Retransmission of unsuccessfully transmitted data ... .29 4.6 Task retry identification... ..29 4.7 Discovery of FCP capabilities.... .30 4.8 Task management... ..30 4.9 Clearing effects of task management, FCP, FC-FS, and FC-AL-2 actions.... 4.10 I_T nexus loss notification events .... ..33 4.11 Transport Reset notification events..... 4.12 Port login/logout. .34 4.13 Process login/logout ... ..34 4.14 Link management.. .34 Fibre Channel protocol overview ... 5 ..35 5.1 FCP addressing and Exchange identification. 5.2 SCSI third-party device identifier for the Fibre Channel protocol.. ..35 5.3 Use of World Wide Names .... 5.4 FCP Information Units (IUs) ... ..36 5.5 Fibre Channel protocol standard formats ... 5.6 FC-FS mappings to SCSI-3 functionality.... .38 5.6.1 FC-FS frame header.... 5.6.2 Frame header fields.... ..38 5.6.2.1 R_CTL ..38 5.6.2.3 CS_CTL 5.6.2.4 S_ID.... 5.6.2.5 TYPE .38 5.6.2.6 F_CTL ...39 5.6.2.7 SEQ_ID. .39 5.6.2.8 DF_CTL . 5.6.2.9 SEQ_CNT.... .39 5.6.2.10 OX_ID. .39 5.6.2.12 PARAMETER... Copyright International Organization for Standardization Not for Resale 14776-222 @ ISO/IEC:2005(E) - 3 - 6 FCP basic and extended link service definitions .40 6.1 Overview of link service requirements... ..40 6.2 Overview of Process Login/Logout.... ..40 6.3 Process Login (PRLI) ... 41 6.3.1 Use of Process Login by the Fibre Channel protocol... 6.3.2 Process_Associator requirements..... ..41 6.3.3 New or repeated PRLI... 6.3.4 Process Login request FCP Service Parameter page format , ..42 6.3.5 Process Login accept FCP Service Parameter page format. 6.4 Process Logout (PRLO) .... .46 6.5 Read Exchange Concise (REC ). ..46 7 FC-4 specific name server objects .47 7.1 Overview of FC-4 specific objects for the Fibre Channel protocol 7.2 7.3 FC-4 Descriptor object.... 8 FC-4 Link Service definitions .. 8.1 FC-4 Link Services for the Fibre Channel protocol , .48 8.2 Sequence Retransmission Request (SRR). 8.3 FCP FC-4 Link Service Reject..... 9 FCP Information Unit (IU) formats . 9.1 FCP CMNDIU 9.1.1 FCP CMND IU format.. ..52 9.1.2 FCP_CMND IU Field descriptions.... 9.1.2.1 FCP_LUN.. ..52 9.1.2.2 COMMAND REFERENCE NUMBER... 9.1.2.3 TASK ATTRIBUTE ... ...53 9.1.2.4 TASK MANAGEMENT FLAGS . ..53 9.1.2.5 ADDITIONAL FCP_CDB LENGTH. 9.1.2.6 RDDATA... .56 9.1.2.7 WRDATA... 9.1.2.8 FCP_CDB.. ..56 9.1.2.9 ADDITIONAL_FCP_CDB.... 9.1.2.10 FCP_DL . ..56 9.1.3 Additional mechanisms for performing task management functions - ABORT TASK.....57 9.2 FCP_XFER_RDY IU.... 9.2.1 Overview and format of FCP_XFER_RDY IU ... .57 9.2.2 9.2.3 FCP_BURST_LEN.. ...58 9.3 FCP_DATA IU... 9.4 FCP_