, , , , . , , , , . , . , , .
. , 100 1000 / , . , , , , . - , - . .
. Ethernet. 1972 ( Xerox). , 1980 , DEC Intel ( , Ethernet, DIX ). 1985 Ethernet , : 802 IEEE (Institute of Electrical and Electronic Engineers) (European Computer Manufacturers Association).
IEEE 802.3 (- eight oh two dot three). - , , . IEEE 802.3 , .
IEEE 802.3 : , , 10 /, 5 , 1024, 500 , 100, -CSMA/CD, , ().
, IEEE 802.3 Ethernet , .
|
|
Ethernet ( 70 1996 , 100 1997 , 80% ), , . , , , , Ethernet, .
Ethernet 50- ( ). ( 90- ) Ethernet, . . . 1995 Ethernet, 100 / ( Fast Ethernet, IEEE 802.3u), . 1000 / (Gigabit Ethernet, IEEE 802.3z).
. () , () . . , ( ). (). , , ( ). ( ) 6,5 , 2,5 .
Fast Ethernet , . Fast Ethernet . 10 (5,12 51,2 Ethernet). 10 .
.19.6. Ethernet
Ethernet, 10 /, :
10BASE5 ( );
10 BASE2 ( );
1OBASE-T ( );
10BASE-FL ( ).
: 10 10 /, BASE ( ), : 5 500 , 2 200 (, 185 ) : һ - ( twisted-pair), F ( fiber optic).
Ethernet, 100 / (Fast Ethernet) :
100BASE-T4 ( );
100BASE-TX ( );
100BASE-FX ( ).
100 100 /, һ , F . 1OOBASE- 100BASE-FX 100BASE-X, 100BASE-T4 100BASE-TX 100BASE-T.