Token Ring FDDI.
Token ring , () .
, . ( ) , (. token). - , , , . . , , , .
(Token Ring), , IBM IEEE 802.5
Token Ring IEEE 802.5 . , . . , , , . ( - 10 ).
, . Ethernet, , , .
, , , , ( ), , , , . , ( early token release), , , . , Token Ring . , .
, , . ; , . , , .
CSMA/CD (, Ethernet) . , , , . , , Token Ring , . . , , , . Ethernet Token Ring .
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FDDI (. Fiber Distributed Data Interface ) , 200 . Token Ring. , FDDI .
FDDI , , CDDI (Copper Distributed Data Interface). , . , ; , . , Token Ring.
, .
80- (ANSI) ANSI X3T9.5.
** - , . , . , . 1- 2- . , . . FDDI.
7: Frame Relay, ATM, 100VG-AnyLan.
Frame relay (. , FR) OSI. Frame Relay . , FR 34.368 / ( E3). : -.( , . , 2 . )
Frame Relay 1990- X.25 (X.25 OSI. WAN , . . Frame Relay.) , FR X.25 , X.25, , FR , X.25 FR . ; , .
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Frame relay (Virtual Circuits, VC) , FR- (Data Link Connection Identifier, DLCI), . . (CIR) .
, , (VoIP, . .).
-------------------------------------ATM
ATM (. Asynchronous Transfer Mode ) , (cell) (53 ), 5 .
. LAN, WAN. , , .
, ATM, , . , , ATM, :
, , ;
;
: , , , ;
-, -, -.
ATM .
ATM , VC (. Virtual Circuit- , ( )), :
- , PVC (Permanent Virtual Circuit), , ;
- , SVC (Switched Virtual Circuit), .
. :
- VPI (. virtual path identificator) ( )
- VCI (. virtual connect identificator) ( )
------------------------------------100VG-AnyLan
Fast Ethernet, AT&T HP 100 / - 100Base-VG. , 802.3. 1993 IBM HP IEEE 802.12, . Ethernet, Token Ring. 100VG-AnyLAN, (Any LAN - ), , Ethernet Token Ring .
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1995 100VG-AnyLAN IEEE 802.12.
100VG-AnyLAN Demand Priority Quartet Coding, 5/6.
Demand Priority , . Demand Priority , , : - - .
100VG-AnyLAN , .
- - Demand Priority
- ,
- -
- 4 UTP 3 (25 /c )
Ethernet Token Ring
- Frame Relay, ATM, 100VG-AnyLan.
Frame relay (. , FR) OSI. Frame Relay . , FR 34.368 / ( E3). : -.( , . , 2 . )
Frame Relay 1990- X.25 (X.25 OSI. WAN , . . Frame Relay.) , FR X.25 , X.25, , FR , X.25 FR . ; , .
Frame relay (Virtual Circuits, VC) , FR- (Data Link Connection Identifier, DLCI), . . (CIR) .
, , (VoIP, . .).
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-------------------------------------ATM
ATM (. Asynchronous Transfer Mode ) , (cell) (53 ), 5 .
. LAN, WAN. , , .
, ATM, , . , , ATM, :
, , ;
;
: , , , ;
-, -, -.
ATM .
ATM , VC (. Virtual Circuit- , ( )), :
- , PVC (Permanent Virtual Circuit), , ;
- , SVC (Switched Virtual Circuit), .
. :
- VPI (. virtual path identificator) ( )
- VCI (. virtual connect identificator) ( )
------------------------------------100VG-AnyLan
Fast Ethernet, AT&T HP 100 / - 100Base-VG. , 802.3. 1993 IBM HP IEEE 802.12, . Ethernet, Token Ring. 100VG-AnyLAN, (Any LAN - ), , Ethernet Token Ring .
1995 100VG-AnyLAN IEEE 802.12.
100VG-AnyLAN Demand Priority Quartet Coding, 5/6.
Demand Priority , . Demand Priority , , : - - .
100VG-AnyLAN , .
- - Demand Priority
- ,
- -
- 4 UTP 3 (25 /c )
Ethernet Token Ring
8: . .
, , . (line) (channel).
: (UTP) (STP)
-
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(attenuation) .
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