- Point-to-Point Protocol - "-" - 2/3 OSI 80- , RFC1134, (1990) SLIP (Serial Line Internet Protocol), 1994 (RFC 1661, STD-0051).
: IETF, TCP/IP, IPX, AppleTalk . FDX- : - -, , , . , TCP/IP- , .
: :
- - LCP (Link Control Protocol);
- - NCP (Network Control Protocol).
( 2 3) , . , ( ) ( ISDN) , 3 .
, Ethernet, TR, FDDI, .25 FR, . HDLC , .3-10. : , ( - ) . 7 :
- "01111110" 1 , / ;
- "11111111" 1 , , /;
- "00000011" 1 , , ;
- 2 , , ;
- ( 0 1500 ), ;
- MRU ( -1500 );
FCS - (2/4 ) .
3-10.
| FCS | |||||||
| 1 | 1 | 1 | 2 | 0-1500 | MRU | 2/4 | 1 |
RFC2153 ( IIDLC) , " " (SDL). .
: LCP NCP, NCP , LCP. .. , . - .3-12.
|
|
|
LCP. "-", LCP-, LCP :
( ) LCP ( 1 , );
() LCP, CHAP ( 2);
- ( 3);
LCP ( , - 4).
NCP. , ( LCP-), NCP- . NCP. . NCP, .
.3-12. -
, LCP NCP , , : , ..
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3-1. ?
3-2. ?
3-3. /PDH . G.702?
3-4. ?
3-5. ?
3-6. ?
3-7. , ?
3-8. ROADM, ?
3-9. >
3-10. ?
3-11 ?
3-12' ?
3-13. G.703?
3-14. HDLC?
3-15. ?
4
