KS X 3306-2008 Information technology－Telecommunications and information exchange between systems－High-level data link control(HDLC) procedures－Classes of procedures《高阶数据链接控制协定过程、过.pdf

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2、nications and information exchange between systems High-level data link control(HDLC) procedures Classes of procedures 1 HDLC HDLC . . HDLC . KS X 3304 HDLC KS X 3305 . 1 1 1 2 (point to point) (multi point) , . 2 , . , . 2 . . KS X 1001, ( ) KS X 3304, KS X 3305, 3 3.1 3.1.1 3.1.1.1 2 ( 1 ). a) 1 b

3、) 2 KS X 3306:2008 2 3.1.1.2 1 ( 1 ). . aI I . 1 HDLC 3.1.2 1 1 1 2 , , . 2 . 3.1.3 1 1 2 (NRM) (ARM) , . (ARM) . 3.1.4 ( ) , . “ ” “ ” 2 2 . KS X 3304 5. . 3.1.5 1 2 I 1 . , a 1 23 KS X 3306:2008 3 0 . , 0 . 3.2 3.2.1 3 . UNC(Unbalanced operation Normal response mode Class) UAC(Unbalanced operation

4、 Asynchronous response mode Class) BAC(Balanced operation Asynchronous balanced mode Class) . a) U B . b) 2 A N . 3.2.2 1 , 16 FCS( ) . 3.2.2.1 UNC UNC . I RR RNR SNRM DISC I RR RNR UA DM FRMR 3.2.2.2 UAC UAC . I RR RNR SARM DISC I RR RNR UA DM FRMR 3.2.2.3 BAC BAC . KS X 3306:2008 4 I RR RNR SABM D

5、ISC I RR RNR UA DM FRMR 3.3 3.2 14 ( 1 ). , ( 2 ). 11 . 3.4 , 3 2 . 1 . 3.5 HDLC , . a) 1 . b) 2 . c) . 3.6 (3.2.1 ) (3.3 ) . 1 UNC 1, 2, 6, 9 (XID), REJ (REJ) (UP) 2 1 . 2 UAC 1, 5, 10, 13 (XID), (SIM, RIM), ( 128) (RD) . 3 BAC 2, 8 REJ (REJ) I . KS X 3306:2008 5 1 1 XID XID 2 I REJ REJ 3 I SREJ SR

6、EJ 4 I , UI UI 5 SIM RIM 6 , UP 7 8 I I 9 I I 10 ( 128) SxxM SxxME 11 (REST) 12 TEST TEST 13 RD 14 32 (FCS) 16 FCS 32 FCS 4 ( ) 4.1 KS X 3306:2008 6 . KS X 3304 KS X 3305 . UNC( UAC) ( 2 ). (3.3 2 ). KS X 3306:2008 7 2 HDLC 1 (BAC ) . KS X 3306:2008 8 4.2 4.2.1 1 1 1 2 . 4.2.2 . . ( ). 4.3 4.3.1 1 1

7、 1 2 . 1 2 ARM . 1 . I N(R) I . 4.3.2 1 . a) b) , c) 2 . a) b) , 4.4 4.4.1 4.4.6 . . . 4.4.1 KS X 3306:2008 9 4.4.1.1 1 SNRM( SARM) , 2 . SNRM( SARM) 2 UA 0 . UA , 2 . 1 2 0 . 2 SNRM( SARM) DM . 1 DM , . SNRM( SARM) , UA DM , . 1 1 SNRM( SARM) (4.4.3 ). 1 UA . 4.4.1.2 1 DISC 1 2 , . DISC 1 2 UA (NDM

8、) (ADM) . DISC , 2 DM . 1 DISC UA DM . UA 2 . DISC . DISC , UA DM , . 1 1 DISC (4.4.3 ). 1 UA DM . 4.4.1.3 NDM( ADM) 2 SNRM( SARM) 4.4.1.1 , DISC DM . 2 P “1” , F “1” DM . P “0” . DM ADM 2 . 4.4.2 (I) 4.4.2.1 I I KS X 3305 N(S) V(S) , N(R) V(R) . , V(S) V(R) 0 . I . KS X 3306:2008 10 I N(S) “ 1” I 4

9、.4.3 . 4.4.2.2 I , N(S) V(R) . I V(R) 1 , . a) , 4.4.2.1 , I N(R) V(R) I ( ) . b) I , RR N(R) V(R) I ( ) . c) I , RNR N(R) V(R) I ( ) . I V(R) . N(R) Y(R) RNR . 4.4.2.3 FCS . FCS N(S) I , N(S) . I . I P/F N(R) . I 4.4.2.2 I . P/F (check pointing) 4.4.4 I . 4.4.2.4 N(R) = x , I , RR RNR “x 1” N(S) I

10、I . 4.4.3 1 . ARM 2 . , . NRM 2 1 . . ARM 2 1 . 4.4.4 P/F UNC UAC P/F KS X 3305 . KS X 3306:2008 11 4.4.5 . a) 1 . 1) F “1” 2) b) 2 P “1” . , 1 , 2 P “0” . , P/F “1” , F/P “1” . , . a) , b) ( ) . , . ARM , I . . 4.4.6 ( , ) . , . . , 2 P “1” . 5 ( ) 5.1 5. . KS X 3304 HDLC KS X 3305 HDLC . BAC ( 2 )

11、. (3.3 2 ). HDLC KS X 3305 B (1. KS X 3306:2008 12 ). 5.2 5.2.1 2 . 5.2.2 . . ( ). 5.3 5.3.1 . . . I N(R) I . 5.3.2 , . 5.4 5.4.1 5.4.6 . . . 5.4.1 5.4.1.1 . SABM . SABM , UA “0” . UA , . “0” , . SABM DM . DM KS X 3306:2008 13 . SABM , UA DM . SABM . SABM (5.4.3 ). UA . 5.4.1.2 . DISC , . DISC , UA (ADM) . DISC DM . DISC UA DM . DISC , UA DM . DISC . DISC . UA DM , DISC . 5.4.1.3 ADM SABM 5.4.1.1 , DISC DM . P “1” , F “1” DM . P “0” . DM ADM . 5.4.1.4 . . UA . UA . UA . ADM DM . DISC , . SABM SABME , SABME SABM . 5.4.2 (I) 5.4.2.1 I I KS X