( , Token Ring, FDDI, , 802.4, - ArcNet, )
.
5.1 -
5.1 , 6 , 1 3. 3 ( ). 1 . 3 - , .
Token Ring
Token Ring :
− ;
- ;
- .
, .
SD | ED | ||||||||||||||||||||||
J | J | R | R | R | J | J | |||||||||||||||||
5.2 -
, .
(Start Delimiter, SD) , , . : JKOJKOOO. .
(Access Control) : , , RRR, - , - , - , RRR - . , 1, , . 1 0 , . , 1, , . , . , . .
(End Delimeter, ED) - . , JK1JK1, : I . I (Intermediate) , (1-0) (1-1). (Error) - . 0 -, , , 1,
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, , (. 5.3).
SD | FC | DA | SA | INFO | FCS | ED | FS |
5.3 -
, , . , :
− (Start Delimiter, SD);
− (Frame Control, PC);
− (Destination Address, DA);
− (Source Address, SA);
− (INFO);
− (Frame Check Sequence, PCS);
− (End Delimeter, ED);
− (Frame Status, FS).
( -), (LLC-). Token Ring 6 -. FC (MAC (MAC LLC), MAC, , .
Token Ring
Token Ring IBM , MSAU (Multi-Station Access Unit), (. 5.4). Token Ring 260 .
5.4 - Token Ring
FDDI
FDDI Token Ring, .
FDDI .
- , (, ), (.5.5), . Wrap, .
5.5 - FDDI
MAC IEEE 802 . FDDI Token Ring, . 5.6 FDDI OSI. FDDI (MAC) . , FDDI LLC, IEEE 802.2.
5.6 - FDDI
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