INTERNATIONAL ISO/IEC STANDARD 14165-122 First edition 2005-06 Information technology - Fibre channel - Part 122: Arbitrated loop-2 (FC-AL-2) IEC ISO Reference number ISO/IEC 14165-122:2005(E) INTERNATIONAL ISO/IEC STANDARD 14165-122 First edition 2005-06 Information technology - Fibre channel Part 122: Arbitrated loop-2 (FC-AL-2) @ ISO/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 Forprice, seecurrentcatalogue 14165-122 @ ISO/IEC:2005(E) 2 CONTENTS FOREWORD 8 INTRODUCTION.. Scope 10 2 Normative references 10 3 Definitions and conventions ... 3.1 Definitions .11 3.2 Editorial conventions 3.3 Abbreviations, acronyms, and other special words 3.4 Symbols .. Structure and concepts ... 4.0 Purpose.. 4.1 Overview .... 4.2 General description ... 18 4.3 Access fairness algorithm.. 20 4.3.0 Access fairness overview.... 4.3.1 Access fairness for NL_Ports... .20 4.3.2 Access unfairness for NL_Ports ... .20 4.3.3 Access unfairness for FL_Ports 21 4.4 Relationship to FC-PH. .21 5 Addressing. 23 5.1 Arbitrated Loop Physical Address (AL_PA) .23 5.1.1 Valid AL_PAs.... 5.1.2Special AL_PAs and flags.. .25 5.2 Native address identifier.. ..25 6 FC-AL Ordered Sets 26 FC-AL Primitive Signals and Sequences. .27 7.0 Overview 7.1 Arbitrate Primitive Signals (ARByx).. 27 7.1.0 ARByx overview... .27 7.1.1 ARB(AL_PA).. .27 7.1.2 ARB(FO) .27 7.1.3 7.2 Open Primitive Signals (OPNy) .. 7.2.0 OPNy overview ... .28 7.2.1 Open full-duplex (OPNyx), .28 7.2.2 Open half-duplex (OPNyy)... .28 7.3 Open Replicate Primitive Signals (OPNr).. 29 7.3.0 OPNr overview... .29 7.3.1 Open selective replicate (OPNyr). 29 7.3.2 Open broadcast replicate (OPNfr)... 7.4 Close Primitive Signal (CLS) ..... ..30 7.5 Dynamic Half-Duplex Primitive Signal (DHD) . ..30 7.6 Mark Primitive Signal (MRKtx). .30 7.7 Loop Port Bypass/Enable Primitive Sequences.. .31 14165-122 ISO/IEC:2005(E) - 3 - 7.7.0 LPE/LPB overview. .31 7.7.1 Loop Port Bypass (LPByx) .31 7.7.2 Loop Port Bypass all (LPBfx).. .32 7.7.3 Loop Port Enable (LPEyx) . 7.7.4 Loop Port Enable all (LPEfx).... 7.8 Loop Initialization Primitive Sequences (LIP) 7.8.0 LIP overview .... 7.8.1 Loop Initialization no valid AL_PA.. .33 7.8.2 Loop Initialization - Loop Failure; no valid AL_PA ..... ...33 7.8.3 Loop Initialization - valid AL_PA ... .33 7.8.4 LoopInitialization—LoopFailure;validAL ..33 7.8.5 Loop Initialization - reset L_Port.. 7.8.6 Loop Initialization -reserved. 8 L_Port operation .34 8.0 Overview 8.1 History.. 8.1.1 Access fairness history .. .34 8.1.2 Duplex mode history .. .35 8.1.3 Replicate mode history .35 8.1.4 Operational mode history .. .35 8.1.5 DHD received history ... 36 8.1.6 ARB(FF) history . 36 8.2 Timeouts 8.2.1 FC-PH timeout values. .36 8.2.2 Arbitrated Loop timeout value 8.2.3 Loop timeout .37 8.3 Operational characteristics . ..37 8.3.1 Transmission Word, 37 8.3.1.1 Power-on Transmission Words .37 8.3.1.2 Invalid Transmission Words and Transmission Characters ... 8.3.2 Clock skew management.... 8.3.3 Error detection and recovery.. 8.3.4 BB Credit and Available_BB_Credit... 8.3.4.0 BB_Credit overview .... ..38 8.3.4.1 BB_Credit management per Loop circuit... ..39 8.3.4.2 Available_BB_Credit management per Loop ....... ..40 8.4 Loop Port State Machine (LPSM). 8.4.0 LPSM overview.. 8.4.1 State names. .40 8.4.2 State diagram 41 8.4.3 Reference items. 43 9 L_Port state transition tables.. .59 14165-122 ISO/IEC:2005(E) - 3 - 7.7.0 LPE/LPB overview. .31 7.7.1 Loop Port Bypass (LPByx) .31 7.7.2 Loop Port Bypass all (LPBfx).. .32 7.7.3 Loop Port Enable (LPEyx) . 7.7.4 Loop Port Enable all (LPEfx).... 7.8 Loop Initialization Primitive Sequences (LIP) 7.8.0 LIP overview .... 7.8.1 Loop Initialization no valid AL_PA.. .33 7.8.2 Loop Initialization - Loop Failure; no valid AL_PA ..... ...33 7.8.3 Loop Initialization - vali