ISO/IEC INTERNATIONAL STANDARD 9314-8 First edition 1998-08 Information technology - Fibre Distributed Data Interface (FDDI) - Part 8: Media Access Control-2 (MAC-2) IEC Referencenumber ISO/IEC 9314-8:1998(E) Copyright International Organization for Standardization ted without license from IHS Not for Resale maaaiandardizato orneworkingmitedwithout licene fromH Not for Resale ISO/IEC INTERNATIONAL STANDARD 9314-8 First edition 1998-08 Information technology Fibre Distributed Data Interface (FDDl) - Part 8: Media Access Control-2 (MAC-2) @ ISO/IEC 1998 means, electronic or mechanical, including photocopying and microflim, without permission in writing from the publisher. ISO/IEC Copyright Office· Case postale 56· CH-1211 Geneve 20· Switzerland CODE PRIX XA IEC PRICE CODE Pour prix, voir catalogue en vigueur For price, see current catalogue Copyright International Organization for Standardization itted without license from IHS Not for Resale 9314-8 @ ISO/IEC:1998(E) CONTENTS Page FOREWORD v INTRODUCTION vi Clause Scope... 1 2 Normative references .. 3 Definitions 4 4 Conventions and abbreviations ... 7 4.1 Conventions .... 7 4.1.1 Addressing.... 7 4.1.2 Timing values and timers. 7 4.2 Abbreviations ... 8 5 General description .. 10 6 Services.... 11 6.1 MAC-to-LLC services... 12 6.1.1 MA_UNITDATA.request .. 12 6.1.2 MA_UNITDATA.indication.... 14 6.3 MA_UNITDATA_STATUS.indication.... 16 .4 MA_TOKEN.request..... 16 6.2 MAC-to-PHY services.... 17 6.2.1 PH_UNITDATA.request.. 18 6.2.2 PH_UNITDATA.indication .. 18 6.2.3 PH_INVALID.indication... 18 6.3 MAC-to-H-MUX Services 19 6.3.1 HM_MODE.indication... 19 6.3.2 HP_UNITDATA.request.... 20 6.3.3 HP_UNITDATA.indication ... 20 6.3.4 HP_INVALID.indication... 21 6.3.5 HP_MODE.request... 21 6.4 MAC-to-SMT services.. 22 6.4.1 SM_MA_INITIALIZE_PROTOCOL.request. 22 6.4.2 SM_MA_CONTROL.request. 24 6.4.3 SM_MA_STATUS.indication .. 26 6.4.4 SM_MA_UNITDATA.request.. 28 6.4.5 SM_MA_UNITDATA.indication.. 29 6.4.6 SM_MA_UNITDATA_STATUS.indication 31 6.4.7 SM_MA_TOKEN.request 31 7 Facilities... 32 7.1 Symbol set .... 32 7.1.1 Line state symbols.... 32 7.1.2 Control symbols... 33 7.1.3 Data Quartets (0-F) 34 7.1.4 Violation symbol (V) t8 Copyright International Organization for Standardization nitted without license from IHS Not for Resale 9314-8 @ ISO/IEC:1998(E) - ii - 7.2 Protocol Data Units . 34 7.2.1 Token.. 35 7.2.2 Frame 35 7.3 Fields . 36 7.3.1 Preamble (PA) 36 7.3.2 Starting Delimiter (SD). 36 7.3.3 Frame Control (FC) 36 7.3.4 Destination and source addresses 39 7.3.5 Routing Information (Rl) field.. 42 7.3.6 Information (INFO) field. 42 7.3.7 Frame Check Sequence (FCS) 43 7.3.8 Ending Delimiter (ED) 44 7.3.9 Frame Status (FS) 45 7.4 Timers.. 46 7.4.1 Token-Holding Timer (THT) 46 7.4.2 Valid-Transmission Timer (TVX) 46 7.4.3 Token-Rotation Timer (TRT) 47 7.4.4 Late Counter (Late_ct). 48 7.4.5 Token Counter (Token_ct) 48 7.5 Frame counts. 48 7.5.1 Frame_ct . 48 7.5.2 Error_ct. 48 7.5.3 Lost_ct.. 48 7.5.4 Copied_ct... 49 7.5.5 Transmit_ct... 49 7.5.6 Not_Copied_ct.... 49 8 Operation.... 49 8.1 Overview.... 49 .................................................................................................. 50 50 8.3 Frame stripping...... 50 .4 Ring scheduling... 51 8.1.5 Ring monitoring 53 8.2 Structure 55 8.3 Receiver 56 8.3.1 Tokenandframevaliditycriteria 57 8.3.2 State R0: 58 8.3.3 State R1: AWAIT_SD (Await Starting Delimiter) 58 8.3.4 State R2: FR_CTRL (Receive Frame Control Field) 59 8.3.5 StateR3 60 8.3.6StateR4:RC FR_STATUS (Receive Frame Status) 62 8.3.7 State R5: CHECK_TK (Check Token) 64 8.4 Transmitter. 65 8.4.1 State TO: TX_IDLE (Transmitter Idle). 65 8.4.2 State T1: REPEAT (Repeat) 67 8.4.3 State T2: TX_DATA (Transmit data) 69 8.4.4 State T3: ISSUE_TK (lssue Token) 71 8.4.5StateT4: CLAIM_TK (Claim Token) 72 8.4.6 State T5: : TX_BEACON (Transmit Beacon) 73 Copyright International Organization for Standardization Not for Resale 9314-8 @ ISO/IEC:1998(E) - ii - 7.2 Protocol Data Units