1、 KSKSKSKS SKSKSKS KSKSKS SKSKS KSKS SKS KS 2003 5 17 KS X ISO/IEC 9314 5 5： (HRC) KS X ISO/IEC 9314 5： 2003X ISO/IEC 9314 5： 2003 ( ) ( ) ( ) ( ) ( ) ( ) ： ： 2003 5 17 03 499 ： ： ( ) ( 02 509 7336) . 7 5 , . ICS 35.200 KS X ISO/IEC (FDDI) 5： (HRC) 9314 5：2003Information technology Fibre Distributed
2、Data Interface(FDDI) Part 5： Hybrid Ring Control , KS 1995 2 1 ISO/IEC 9314 5： Hybrid Ring Control(HRC) . ISO(the International Organization for Standardization ： ) IEC(the International Electrotechnical Commission： ) . ISO IEC . ISO IEC . ISO IEC . (IT： Information Technology) ISO IEC ISO/IEC JTC 1
3、 . . 75% . ISO/IEC 9314 5 ISO/IEC JTC 1 . ISO/IEC 9314 (FDDI： Fiber Distributed Data Interface) . 1： (PHY) 2： (MAC) 3： (PMD) 5： (HRC) ISO/IEC 9314 5 A F . 1. ISO/IEC 9314 5 (Hybrid Ring Control; HRC .) . HRC FDDI (Media Access Control; MAC .), (Physical Layer; PHY .), (Physical Medium Dependent; PMD
4、 .) . HRC (Hybrid Multiplexer; H MUX .) (Isochronous X ISO/IEC 9314 5： 2003 2Media Access Control; I MAC .) . H MUX . IMAC . H MUX I MAC . FDDI (Station Management; SMT .) . HRC 100Mbps 6.144Mbps . 100Mps . FDDI HRC FDDI II . FDDI MAC(Packet MAC; P MAC .) HRC , LLC (Circuit Switching Multiplexer; CS
5、 MUX .) 1 . . FDDI II FDDI II . HRC , FDDI FDDI II HRC . ISO/IEC 9314 FDDI , . ISO/IEC 9314 5 HRC . , . KS X ISO/IEC 9314 5： 2003 3 (SMT) (CS-MUX) (LLC)MAC(I-MAC) (MAC) (PMD) (PHY)FDDI (DLL) (HRC) ( ) (H-MUX) HRC MAC2; MAC MAC 2 HRC PHY 2; PHY PHY 2 PMD, SMF_PMD, TP PMD, LCF PMD HRC SMT 2; SMT SMT2
6、1 FDDI 2. . ISO 9314 5 . (IEC) (ISO) . ISO 9314 1： 1989 (FDDI) 1： (PHY) ISO 9314 2： 1989 (FDDI) 2： (MAC) ISO/IEC 9314 3： 1990 (FDDI) 3： (PMD) ISO/IEC 9314 7 (FDDI) 7： 2(PHYS 2) ISO/IEC 9314 8 (FDDI) 8： 2(MAC 2) ISO/IEC 8802 2： 1994 2： ( )X ISO/IEC 9314 5： 2003 43. . 3.1 FDDI II FDDI . . FDDI . 3.2 .
7、 3.3 2 CS MUX . 3.4 . 3.5 (CSMUX) CS MUX , . 3.6 2 , . 3.7 HRC . 125s , 100Mbps 3 120 ( .). 3.8 2 . , . . . 3.9 125s . , , , . 3.10 FDDI II . . , . 125s , . . . 3.11 . . , 1 63 , 64 255 . 3.12 . , , . 3.13 16 (Wideband Channel; WBC .) . WBC . , 100Mbps 96 WBC . WBC . WBC . 3.14 (DPG) (100Mbps ) 0.76
8、8Mbps . 3.15 (OSI) . 3.16 FDDIII FDDI II FDDI HRC . 3.17 3.18 MAC (Hybrid Isochronous MAC Service Access Point; HI SAP KS X ISO/IEC 9314 5： 2003 5.) HI SAP H MUX . I MAC WBC . 3.19 FDDI II 125s . FDDI . 16 . . 3.20 (Hybrid Multiplexer; H MUX .) . 3.21 MAC (Hybird Packet MAC Service Access Point; HP
9、SAP .) HP SAP H MUX . P MAC . HPSAP , WBC 0.768Mbps 99.072Mps . 3.22 FDDI II . . 3.23 (Hybrid Service Access Point; HI SAP .) H SAP H MUX . 1 HP SAP 16 HI SAP . 3.24 . 3.25 MAC (Isochronous MAC Service Access Point; I SAP .) I SAP IMAC . CS MUX . MAC . I SAP SMT . 3.26 (Isochronous Media Access Cont
10、rol; I MAC .) I MAC . 3.27 LAPD LAPD CCITT ISDN D . 3.28 (Latency Adjustment Buffer; LAB .) LAB 125s . 3.29 (Media Access Control; MAC .) MAC ( FDDI ). 3.30 FDDI 2 . , FDDI . 125s . 3.31 , . , . 3.32 . 0 63 , 63 . 0 . . 3.33 FDDI II . MONITOR . LAB . , 0 . X ISO/IEC 9314 5： 2003 63.34 2 CS MUX . 3.3
11、5 . . 3.36 8 , FDDI II . 3.37 (Packet Media Access Control; P MAC .) . 3.38 . FDDI FDDI II (P MAC) . 3.39 (Physical Layer Protocol; PHY .) . 3.40 (Protocol Data Unit; PDU .) . , ( SDU). FDDI MAC PDU . 3.41 . , . . 3.42 Q.931 Q.931 CCITT ISDN D . 3.43 , . 3.44 1 . , , , . 3.45 , OSI . . . 3.46 . . 3.
12、47 (Service Data Unit; SDU .) . MAC SDU , PHY SDU . 3.48 FDDI II . . 3.49 , , FDDI , . FDDI PHY PMD , HRC , MAC , 1 SMT . 3.50 (Station Management; SMT .) FDDI , FDDI . 3.51 DLL . 16 8 KS X ISO/IEC 9314 5： 2003 7 . 3.52 , . 3.53 . , . . MAC , . 3.54 . . . ISDN , 64kbps ISO/IEC 9314 5 . 3.55 , , , .
13、3.56 ( Wideband Channel; WBC . ) WBC HRC . WBC . 4. 4.1 SMT, MAC, PMD PHY . LLC , SMT MAC . ( request_service_class) , , . ( MA_UNITDATA.request) . . | TRT .) . , . ISO/IEC 9314 2 . 3 5.2 5.2.1 WBC I MAC SAP , WBC . FDDI II . WBC 6.144Mbps . KS X ISO/IEC 9314 5： 2003 115.2.2 FDDI II . a) I MAC (I SA
14、P) . b) WBC WBC . c) WBC . d) WBC . e) . f) . g) h) . i) . 5.2.3 64kbps , 6.144Mbps( WBC) . WBC WBC , WBC . 8kbps , 16kbps , 32kbps 4 ( ) . FDDI II . / (kbps) 1 8 2 16 4 32 8 64 48 384 192 1536 1+192 1544 240 1920 256 2048 768 6144 5.2.4 . . . . a) 1 . b) 2 . 5.2.5 2 CS MUX . CS MUX SAP . CS MUX . 5
15、.2.6 2 , , . 5.3 SMT . . 4 . WBC . X ISO/IEC 9314 5： 2003 12WBC WBC WBC ()()WBC 4 5.3.1 . 5.3.1.1 WBC FDDI II SMT WBC . WBC WBC . 5.3.1.2 WBC . a) H MUX SMT . WBC . b) WBC WBC ( .) WBC , WBC WBC FDDI II . WBC . SMT SMT . 5.3.2 . 5.3.2.1 . a) WBC . KS X ISO/IEC 9314 5： 2003 13b) , , . 5.3.2.2 a) , , . b) . 5.4 FDDI II , . , . 1 , . . .
