Алиев Т.И. Сети ЭВМ и телекоммуникации

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201

%5B65486 F5D5654 CSMA/CD FEC9ACDBA  123 Ethernet B

F5FB69E BF5B595BDAE BC FCC7 799 10 D/B,

100 D/B  1 6D/B, BF548 579C F59ADA D555 9DC747

F5 54ACD 55D8 5FB79C F5D56547 CSMA/CD 4A BC D BCDC".

 *5542+5 425 B547B95 F5D5654 CSMA/CD BD79!

F549AD B4CC D7F.

1. 3684E7A42 5 97747 FCC7.

3D79!A E5#CD FCC77D8 67, CB4 7 C4ACE7A BC7 (67974

BA ) B5597. *4A D55 BD79! 9CFC95 B4CAD, 9C F5A4BA 4 

67974C B974 "974C 9CBC"", 65D5" 7BF5 97CDBA F5 59

97FA#C9A  BCDC48BDCD 5 79AD5BD 679747.

2. /723%7 FCC7, CB4 67974 79AD. % D5E 67, 5#7"

5B55#C9A 679747, 975DBA  CC BCDC55 77FDC7.

3. -7#786 F2327#4 677, CB4 67974 B55C9. % 9765E

9C 79AD5BD 679747 A4ACDBA 5DBDBDC  9)E 9CBC" 7BD5D.

3B4 67974 B55C9 4 D54865 D5 5B554BA (B974

"5DBDBDC 9CBC""), BD79!A E5#CD 977D8 FCC7, C#7

DC9545CB6 F7 , 97 7CE F3429A C7EF9452, 495"

 96 D5 9DC745, D5 4A 123 B F5FB695" BF5B595BD8

10 D/B B5BD74ACD 9,6 E6B.

C5/54% 5-!24 5262 5B454C97

B4CE 5BD5ADC48BD7E. 25-FC, F5B65486 BC BD79!

5DB4C#7D FCC7 BC 675  BCD, D5 F5B4C 7CC9A FCC7

BC 252EB2 77F523B 68%AB B59 F34E22AB E 4D6A62 656!A42 4A

F)E7 5CC955 677, 4A C5 DCCDBA 5FCC4)995C CEA. 25-

D5, BF548 579C EC#67555 9DC747 F3265E37+725

6A6F689ABC 7DE75 32B 595" BD79!C".

%5 7CC9 EC#67555 9DC747 BD79! E5D 977D8

FCC7 B5C5 677. 7 - 7 7C#C6 7BF5BD79C9A B9747 F5 67C4

9C BC BD79! BD55 595CEC995 6BD 76D 565979A FCC7

677.

4. 2327#7 737 4 F3684E7A42 68844C. &7 FCC7CDBA F5

67C4895" BBDCEC  55 97F74C9A. 3B4  D5 #C CEA C) 597

BD79!A 979)D FCC7 677,  67974C 5 969CD 68844!. &7,

54CC99C  6544 , FC7DADBA 5 25 (F5 5"CD

9745#C9C 675). %5D5E 5 CEA FCC7 BD79! F5B47D

67974 B !C48 597#C9A 6544 ". 25 9695C9C 6544 

7BF5 97CDBA F5 974 B9747  67974C, 5C98 65D555 9C EC98C

59A B9747, F5 5E55 F 595CEC995" FCC7C EA 4

9CB65486E D79BC7E.

3B4 6544 A 5 9647, 95 C BD79! CC 9C 597#4 CC,

59 E5D F5FD7D8BA 977D8 FCC7. &7 D BD79!" D57 D

54CC9  95 6544 . *4A B64C9A D765" BD7!

54CC99C  6544  BD79! 9797D FCC77D8 26 322 B

123456 3. 78926ABC5 DCEF6F56ABC5 5F

202

DCE, D5 BC 5BD7489C BD79! BCEC9D7 5BD5C4B8  D5E, D5

49A 79AD7.

C$745 4E24 – BFC!74897A F5B4C57DC4895BD8  32 D,

97 7CE7A jam-F6826E75289A659.

3D79!, 54CC99C  6544 , C47D 97 1 B5 +5+!

+62 **! *5542+.

3D79!A BD7CD, D5 597 F37E8!25 22A56 67C4A, CB4 C #C

FCC795 6822 64 7C5. &544 A, 5 9677A B 675E 495" 54CC 64

7"D, 97 7CDBA 2 7F 3255C CF, D5 595 BCDC48BDCD 5

9C65C6D95E E59D7#C 67C4895" BBDCE, 97FEC, 5 D5E, D5 6765"-D5

BCEC9D E5#CD D8 499CC, CE D5 5FCC4C95 BFC!67!C" 4A

79955 DF7 67C4895" BBDCE.

5. %47A42 FCC F5D595" FCC7C".

*4A 57 E5EC9D7 F5D595" FCC7 BD79!A C"BDCD

B547B95 D76 97 7CE5E 45$2CE 2EDE5F7C8, 5CBFC7CE

7 49C CEC97 5D595BD 6 F5D595" FCC7C. %5D597A FCC77

5D6477CDBA 97 B47"95C CEA 67D95C 512 D5E 9DC747E, D5

4A 123 B F5FB695" BF5B595BD8 10 D/B B5BD74ACD 51,2 E6B:

,CB8 N – B47"97A C497, F9E77A !C45B4C995C

97C9C  9DC747 (0; 2

)  B55DCDBD B 795EC9E 76595E

7BFCC4C9A, C n – 654CBD5 6544 " (F5D59 FCC7), FCE

n = 1, 2, …, 10.

%

B47"97A C497 N E5#CD F9AD8 B C5AD95BD8 1/3

595  D) 97C9": 0, 1, 2, 7 F

– B C5AD95BD8 1/5 595 

FAD 97C9": 0, 1, 2, 3, 4.

%5B4C CBAD5" 6544  n 9C EC9ACDBA  5BD7CDBA 79E 10. 076E

57 5E, E76BE74895C CEA, 97 65D55C 5D6477CDBA FCC77 677,

795

 4,522*2,51

max

≅=

6. 6E563A7! F2327#7 4 FC67C9C 75D.

3D79!A E5#CD F5FD7D8BA FCC7D8 67 5 16 7 , FC#C CE

FC67DD B5 F5FD6. 2 D5E B47C 67 5BD7CDBA 9C FCC799E.

 *65 425 BD79!A, 975A7ABA  BCD, 54#97

F549AD8 B4CC C"BDA.

1. 36653 F65F7+4D 736E 799  597#C9C

7EC9D5.

2 123 Ethernet BC BD79! F5BE7D7D BC 67, F55AC

F5 67974 BA . % D5E 4A 67#55 677 F5CACDBA, ECCD 4 59

5FBDE 49 (9C EC9CC 64 7"D), D5 CBD8 9C A4ACDBA 4 59

7EC9D5E, F55#C99E 6544 C".

2. 36E237 7327 F547DC4A.

3B4 67 799 9C A4ACDBA 7EC9D5E, F9E77A BD79!A

F5CACD 7CB F547DC4A 677, D5 5FCC4D8, B4CCD 4

577D7D8 67.

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203

3B4 67 7CB579 7995" BD79!, A4ACDBA 565C7DC489E

4 ECCD B55DCDBD" FF55" 7CB, BD79!A F5CACD

!C45BD95BD8 677.

3. 36E237 2865A654 737 799.

*4A D55, D5  C#7D8 575D6 B67#C99 F FCC7C F5

67974 4 9C65C6D95 B5E5799 97 FCC7C" BD79! 675,

F9E77A BD79!A 54#97 F5CD8:

• 84A 737: CB4 67 499CC 1518 7"D, 59 BD7CDBA

FCCF549C99E; FCCF549C99C 67 E5D F5A4AD8BA  C 48D7DC

9CBF795BDC" BCDC55 7"C7;

• 6A53689A F6826E75289A659 737 B F5E58 !64CB655

 D5955 657;

• CB4 659D54897A F5B4C57DC4895BD8 9C65C6D97, F5CACDBA

EB37EA2AA659 737: BC 67 54#9 B5C#7D8 !C45C B45 7"D

(97FEC, 9C 122,5 7"D).

3B4 659D54897A F5B4C57DC4895BD8 677 9C65C6D97, 95 67

B5C#D !C45C B45 7"D (65C6D95 59C9), BD7CDBA, D5 ECCD

ECBD5 567 659D54895" F5B4C57DC4895BD.

076E 57 5E, F5C67 677 F9E7C" BD79!C" 7647CDBA

 5FCC4C9:

• A4ACDBA 4 67 7EC9D5E;

• 9C B465E 4 C467 C5 497;

• 5597 4 C5 659D54897A F5B4C57DC4895BD8;

• 65C6D95 4 59 59C9.

3B4 6767A-45 F5C67 7C47B8 9C7C", 67 9D5#7CDBA

 C5 B5C#E5C 9C FCC7CDBA 4A 575D6 F5D5654 BCDC55 59A.

4. 37657 737.

&7, BFC95 F5C" BC F5C6, BD7CDBA 65C6D9E,

F74895 B5E5799E  ECE 5FBDE 49. 0765" 67

5B55#7CDBA 5D 754567  659!C67, 7 C5 B5C#E5C FCC7)DBA 4A

7489C"C" 575D6 F5D5654 BCDC55 59A.

3B4 BD79!A 65C6D95 F564C97 6 BCD, 5477CD BF79E

67D7E  D79BC7E, D5 597 54#97 F9E7D8  FCC77D8 65C6D95

B5E5799C 67 799. *4A F5C6 75D5BF5B595BD BCD

BF548 DBA 7974 7D5 F5D56545, 65D5C 5CBFC7D F5C6

67CBD7 BA  B5 BD79!AE  B 7"4-BCC5E. *4A D55 BF548 DBA

BFC!7489C 795BDCB6C 67  C 565C7DC48955

B55C9A, 97 7CE55 675E "F9-F59", 97 65D5" 54#9 5DCDD8

BD79! BCD.

3.2.4. 799A6675786 DEF Ethernet

123 Ethernet E5#CD 5'C9AD8 BCEC9D, F5BD5C99C 97 5B95C

7 9 DF5 67C4C": D54BD55 4 D59655 6576B748955 67C4A, D5"

F7, 54565995-5FDCB655 67C4A. % D5E 654CBD5 BCEC9D5 

BCD E5#CD FC7D8 67 7995C 79CC  B55DCDBD B F745E «5-4-3»

123456 3. 78926ABC5 DCEF6F56ABC5 5F

204

97C9C 5. 2D5 BCD8 Ethernet, B5BD5A7A  BCEC9D5 7 495"

 CB65" F5, 75D747 65C6D95, 9C55E5 F549C9C

CDC 5B959 B45":

• 654CBD5 BD79!"  BCD 9C 54CC 1024;

• E76BE74897A 497 67#55 BCEC9D7 9C 54CC C49,

5FCC4C995"  B55DCDBDCE BD797DC  CB655 59A (500 E 

185 E – B55DCDBDC995 4A D54BD55  D59655 6576B748955 67C4A;

100 E – 4A 9C67957995" D5" F7; 2000 E – 4A 5FD5545659955

67C4A);

• CEA 5"955 555D7 B9747 (Path Delay Value, PDV) EC#

EA B7EE 74C99E  5D 7 BD79!AE BCD 9C 54CC 575

D5 9DC747;

• B567C9C EC#67555 9DC747 (Path Variability Value, PVV)

F F55#C9 F5B4C57DC4895BD 675 CC BC F5D5DC4

54#95 D8 9C 548C, CE 49 D5 9DC747. 076 676 F 5DF76C

675 659C9C  4 5CBFC7D 9774895C EC#6755C 7BBD5A9C 

96 D5 9DC745, D5 F5B4C F55#C9A F5D5DC4C" 595 54#95

D8 9C EC98C, CE 96–49=47 D5 9DC747.

354C9C D DC579" 5CBFC7CD 65C6D95BD8 75D

BCD 7#C  DC B47A, 657 977DBA F747 659579A,

5FCC4AC E76BE74895C 654CBD5 F5D5DC4C"  5 49

BCD  2500 E.

3.2.4.1. B48DA 455AC34BCD  E

*4A 65C6D95" 75D BCD Ethernet 9C55E5, D5 BD79!

BC7 E54 597#D8 6544 , CB4 597 5 9647  F5!CBBC

FCC7 677. 3B4 BD79!A FC67DD F5B479C BC FCC7

798C, CE 6544 A E5#CD F5 5"D, FCC77CE" 67 CD F5DCA9.

%5D5E FCC77A BD79!A 54#97 597#D8 6544 , 65D5

 74 FCC799" C 67, CC 5 D55, 676 597 7659D FCC7 D55

677. %5B65486 5 97747 FCC7 BC BD79! BCD F5B47D

67974, D5 6544 A  CE B47C E5#CD 5 969D8 F FCC7C

675 EC# 9754CC 74C99E  5D 7 BD79!AE BCD. 0767A

BD7!A F567 797 97 B.3.25.

2 E5EC9D CEC9

 C4 1 9797CD FCC7 677 &

. %545#E,

D5  E5EC9D

, 657 67 &

F6#54 5BD7CD 9754CC 74)9955  47

, F5B4C9" 9797CD FCC7 677 &

. 2 C 48D7DC BD54695C9A

1 2 3 4

…

6544 A

123456 3. 78926ABC5 DCEF6F56ABC5 5F

205

675 &

 &

5 967CD 6544 A, 65D57A 7BF5BD79ACDBA F5 67974 

 E5EC9D

5BD7CD  47 1. 076E 57 5E, B974 F55D 7#

EC# 9754CC 74C99E  5D 7  47E BCD  DCC9C CEC9

ttT

PDV

−

, 65D55C 97 7CDBA E322A2 E6CA66 663657 (Path Delay

Value, PDV).*4A 7BF5 9779A D765" 6544   45E 1 9C55E5,

D5 E9E74895C CEA

min

T FCC7 677 DE  45E 45 548C

E322A4 E6CA66 663657

PDV

T :

PDV

min

9E74895C CEA

min

T FCC7 677 BA 795 B E9E74895"

495" 677 l

min

 F5FB695" BF5B595BD8 679747 BA  (

B55D95C9CE:

min

2CEA 5"955 555D7

PDV

T 7BD 5D E76BE748955 7BBD5A9A

EC# 9754CC 74C99E BD79!AE 123 (

49 67C4895" BBDCE)

L  B655BD 7BF5BD79C9A B9747

 67C4C v:

PDV

C B655BD8

7BF5BD79C9A B9747 7BD 5D DF7 FCC7C" BC 

5FCC4ACDBA 676

( – B655BD8 BCD7).

057 86E42 63325A654 ."(, 5B454C995C 9C55E5BD8

597#C9A BC 5 967  BCD 6544 ", FECD :

min

%5B4C9CC 7#C9C E5#CD BF548 57D8BA 4A 5FCC4C9A

E76BE748955 7BBD5A9A EC# 9754CC 74C99E BD79!AE 4

4A 5FCC4C9A E9E748955 7 EC7 677 F 77995E 7BBD5A9:

min

;

min

5. 17BBE5DE BCD Fast Ethernet  Gigabit Ethernet.

%BD8:

457C5lv 51264;/10

min

===

%5FB69C BF5B595BD BCDC" Fast Ethernet (FE)  Gigabit Ethernet

(GE) B55DCDBDC995 79:

45(

/10



45(

/10

057:

L

256

512*10



L

6,25

512*10

076E 57 5E, 7ECD BCD Fast Ethernet 9C 54#C9 FC7D8 256

ECD5, 7 7ECD BCD Gigabit Ethernet – 25 ECD5.

+C95, D5 BD548 E74C986" 7 EC BCD Gigabit Ethernet 9C E5

54CD5D8 9 7 75D65, 9 F548 57DC4C" BCD.

*4A C4C9A 7ECD7 BCD Gigabit Ethernet 5DA  5 200 E

9C55E5 C4D8 E9E7489 49 677 5 97C9A:

123456 3. 78926ABC5 DCEF6F56ABC5 5F

206

.5004000

10*200*22

min

7C545

l ===>

2 123 GigabitEthernet, 676 CD F567 795 9#C, E9E74897A 497

677 C4C97 5 97C9A 512 7"D, D5 F5 5445 C4D8 7ECD

BCD 5 200 E.

3.2.4.2. !6B"#C 85AA3D 284$3474 4%454C6 (PDV)

*4A F5C9A 7BCD7 PDV 595 BF548 DBA BF759C

799C IEEE, B5C#7C 97C9A 7C#C6 7BF5BD79C9A B9745 

F5D5DC4A, FCE5FCC7D67  7 49  CB6 BC7. 2

D74.3.3 FCC9 799C, 9C55EC 4A 7BCD7 97C9A PDV 4A

BC  CB6 BD797D5 BCDC" Ethernet.

75) 55 – D5 FCC7" BCEC9D. ,7DCE B974 F55D

CC *5- +5 55  55D 5 9754CC 74C9955

*2 (F9E7C5) BCEC9D7. 7EC995 CB8  CE B47C

F5B5D BD54695C9C 675  5 967CD 6544 A.

3 67#E BCEC9D5E BA 797 F5BD5A997A 7C#67, 97 7997A /23),

65D57A 7BD D54865 5D DF7 BCEC9D7  5D F545#C9A BCEC9D7 97 FD

B9747 (4C", F5EC#D59" 4 F7"). &5EC D55, B 67#E

BCEC9D5E BA 797 7C#67 7BF5BD79C9A B9747 548 67C4A

BCEC9D7, 65D57A 7BD 5D 49 BCEC9D7  B4ACDBA FDCE

E95#C9A CEC9 7C#6 B9747 97 595E ECDC 67C4A ( D5

9DC747) 97 49 67C4A  ECD7.

1784 7 3.3

0F

BCEC9D7

57 7 4C-

55 BC-

EC9D7, bt

57 7 F5EC-

#D5955

BCEC9D7, bt

57 7 F7-

55 BC-

EC9D7, bt

,7C#67

BC

97 1 E, bt

76BE.

497 BC-

EC9D7, E

10Base-5 11,8 46,5 169,5 0,0866 500

10Base-2 11,8 46,5 169,5 0,1026 185

10Base-T 15,3 42,0 165,0 0,113 100

10Base-FB - 24,0 - 0,1 2000

10Base-FL 12,3 33,5 156,5 0,1 2000

FOIRL 7,8 29,0 152,0 0,1 1000

17B)D PDV F549ACDBA 4A  9754CC 74C99 (F5 CEC9

7BF5BD79C9A B9747) BD79!" BCD  7647CDBA  B4C9

7C#C6, 95BE 67#E 5DC 65E 67C4A,  BEE579 D

7C#C6 B 7 7E 4C55, F5EC#D59  F755 BCEC9D5. +CC

97C9C PDV (BEE7 97C9" BC BCEC9D5) 9C 54#95 FC7D8 575

D5 9DC745. $D5 97C9C F54C95, B5A  E9E74895"

49 677  10-EC7D95E Ethernet  64 7"D7 F4B FC7E47 8 7"D,

BC5 72 7"D7 4 576 D. 34C57DC4895, CEA 5"955 555D7

54#95 D8 EC98C 57,5 E6B.

123456 3. 78926ABC5 DCEF6F56ABC5 5F

207

076 676 4C"  F7" BCEC9D ECD 7 49C C49

7 55" 7C#6, 9C55E5 F549D8 7BCD 7#, F5EC9A F

D55E 7B)DC ECBD7E 4C"  F7" BCEC9D BCD.

.7 5B95C FCBD74C99  D74.3.3 97C9" 7C#6 ( D5

9DC747) 7BF5BD79C9A B9747 F5 67C4  7BCDC 97 1 ECD

E5#95 5!C9D8 B655BD8 7BF5BD79C9A B9747 F5 67C4 

B55DCDBDC 97C9A 65!C9D5 7EC4C9A (EC98C9A

B655BD FCC7 B9747 F5 B79C9 B5 B655BD8 BCD7):

• 4A D54BD55 6576B748955 67C4A:

]/[115500]/[10*5,115]/[10

66,8

1000

v =≈=

;

6,2

115500

300000

≈=k

;

• 4A D59655 6576B748955 67C4A:

]/[97500]/[10*5,97]/[10

26,10

1000

v =≈=

;

1,3

97500

300000

≈=k

;

• 4A D5" F7:

]/[88500]/[10

3,11

1000

v

≈=

;

4,3

88500

300000

≈=

;

• 4A 5FDCB655 67C4A:

]/[100000]/[10

1000

v

;

100000

300000

3.2.4.3. !6B"#C &A3'A3D A(62548474 D3CA5866 (PVV)

*4A D55 D5 5FCC4D8 65C6D95BD8 F5BD5C9A

E955BCEC9D95" BCD, 9C55E5 7BBD7D8 EC98C9C EC#67555

9DC747 F5D5DC4AE F FCC7C 675  BCD, D5 CBD8 C49

PVV.

*4A 7BCD7 PVV BF548 DBA C65EC95799C 9BDDD5E IEEE

FCC489C 97C9A ( D5 9DC747), 5FCC4AC EC98C9C

EC#67555 9DC747 F F55#C9 F5D5DC4C" 7 49

 CB6 BC. $D 97C9A 4A FCC7  F5EC#D59

BCEC9D5 FCC9  D74.3.4.

3EE7 D C49 7CD 97C9C PVV, 65D55C 54#95 D8

EC98C FCC48955 97C9A  49 D5 9DC747.

1784 7 3.4

0F BCEC9D7 %CC7" BCEC9D,

%5EC#D59"

BCEC9D, bt

10Base-5 4

10Base-2

16 11

10Base-FB - 2

10Base-FL 10,5 8

10Base-T 10,5 8

123456 3. 78926ABC5 DCEF6F56ABC5 5F

208

3.2.5. %2A#65 9422566 39C9C5679A5C DEF Ethernet

2 67CBDC F567 7DC4C" F5 5DC4895BD BC FCC7 799

 123 Ethernet BF548 DBA B4CC C49:

•

2D3748 D2D272DE6

347454 D98 C (

[D/B], 5FCC4ACE7A

676 FCC4897A B655BD8 FCC7 799;

•

25F 748 (%&&F3EC9748) 2D3748 D2D272DE6 347454 D98 C

[D/B], 5FCC4ACE7A 676 FCC4897A B655BD8 FCC7 799

F548 57DC4A C CD7 FCC77CE B4#C9 BE545  754567 

659!C67  C CD7 5 E5#9 F5BD5C 679747  6544 ";

•

F456748 (&43ECBFD348) D322DE6 FF4BC 477A

[D/B],

5FCC4ACE7A B CD5E 5 E5#9 F5BD5C 679747  6544 ";

•

2D3748 D2D272DE6 DFA FF4BC

[675/B],

 ECACE7A 654CBD5E 675, FCC77CE 7 C9! CEC9.

2F549E 7B)D FCCB4C99 776DCBD6 FEC9DC4895 6

123 Ethernet B F5FB695" BF5B595BD8 (=10 D/B.

+FCC4E F36FA F66A659

[675/B] 32B F2327#4

4A 675 E9E74895" (B.3.26,7)  E76BE74895" (B.3.26,) 49.

924 26%) 46 B FC7E45":

;2,67).(6,96,571,0*576

;5768*72)(64)(8

min

4A523E782%7345T

45457C57737C57F327877C5L

=+==

./14880/1

minmax

736E1

≅

924 2!26%) 46

FC7E45"

./813/1

;4,1230.).(6,98,12201,0*12208

;122088*1526)(1518.)(8

maxmin

max

736ET

4A52%7345T

45457C5737C5F3277C5L

≅=Λ

=+==

076E

57 5E



10-

EC7D95"

BCD

Ethernet

C

)D7

5 E5#9

6544 "

74789A6

E5#CD

D8

FCC795

59

BC69

813

!24

(

E76BE74895"

49

)

5

14 880 !24

(

E9E74895"

49

+DB7

4C65

5FCC4D8

F54C 9

(

C6D9

)

F5FB69

BF5B595BD8



65!C9D

BF548 579A

679747

BA 

F

FCC7C

675

E9E74895"



E76BE74895"

49

&7

min

&7

max

&7

96 bt

min

=67,2

E6B

1500

96 bt

7

=1230,4

E6B

&7

&7

7"D

123456 3. 78926ABC5 DCEF6F56ABC5 5F

209

;548,0;/48,58*46*14880

min

minmin

====

k'45(

.976,0;/76,98*1500*813

max

maxmax

====

k'45(

%54C99C 97C9A F567 7DC4C" F5 5DC4895BD 

65!C9D7 BF548 579A 679747 BA  9C D7D F36564 254 

5 967C F FCC7C 799 688444, 97DC4895 B9#7C

C7489 F5FB69 BF5B595BD8 123 Ethernet.

3.2.6. &9A59C7A52 C 769A5254C DEF Ethernet

2 67CBDC 5BD59BD 123 Ethernet B4CCD 5DECDD8:

• F36565 57A6E4 4 $F8757 44;

• A2EB6 564659 327847 44, 686E82AA F5BD5D5" 

9CB565" BD5E5BD8 BCDC 77FDC5  659!C9D7D55;

• 5 E5#95BD8 BF548 579A 3784#ABD 54F6E 728!  BCE

F56476 67C4895" BBDCE.

& 9C5BD7D67E BCD Ethernet E5#95 5D9CBD:

• BA4%2A42 32789A6C 63654 FCC7 799  B4895

7#C995" BCD, F45D8 5 CC F5495" 5BD7956;

• D3A654 F647 A24F37EA652C: F 5C 67C4A 5D67 7CD

CB8 BCEC9D 123  45674 57D8 9CBF79"  C4 4 7BD56 BCD

5BD7D595 B45#95.

3.3. D7F88F828F47 488933 Ethernet

%CE B565B655BD9E DC9545AE 4A FCC7 799

F5 BCD Ethernet B5 B655BD8 100 D/B 4 C 6596C

DC9545 – Fast Ethernet  100VG-AnyLAN.

3.3.1. Fast Ethernet

Fast Ethernet (#ADEA Ethernet) – B565B655BD97A DC9545A,

FC45#C997A E5" 3Com 4A C74 7! BCD Ethernet B5 B655BD8

FCC7 799 100 D/B, 6D37A4E7! E 74789A6C 52F2A4

5B5C995BD 10-EC7D955 Ethernet (Ethernet-10)  C74 57997A  C

BD797D7 802.3u.

+B9595" !C48 F 7 75D6C DC9545 Fast Ethernet 45

5CBFCC9C FCCEBDC995BD F5 5D95C9 6 10-EC7D95E Ethernet 7

B)D B579C9A 5E7D7 675  ECD57 5BDF7 CSMA/CD, D5

F5 54ACD BF548 57D8 FC#9CC F57EE95C 5CBFCC9C  BCBD7

F74C9A BCDAE Ethernet. +9E  DC579" 45 D76#C

BF548 579C 67C4895" BBDCE 97 5B95C D5" F7 67DC5 3,

F54C" 97 E5EC9D F5A4C9A Fast Ethernet 565C 7BF5BD79C9C

 BCDA Ethernet-10. 2 BA  B DE BC 5D4A Fast Ethernet 5D Ethernet-10

B5BC5D5C9 97  CB65E 59C.

2 Fast Ethernet FCBE5DC9 3 779D7 7289ABD 452:

• E955E55" 2+& (BF548 CDBA 2 545697);

123456 3. 78926ABC5 DCEF6F56ABC5 5F

210

• D7A F77 67DC5 5 (BF548 CDBA 2 F7);

• D7A F77 67DC5 3 (BF548 CDBA 4 F7).

(53537 BCD – C7CB67A C597A, F5BD5C997A 97

659!C9D7D57 (676 10Base-T  10Base-F), F5B65486 9C

FCBE7D745B8 BF548 579C 6576B748955 67C4A.

*7ECD BCD Fast Ethernet, 676 F567 795  F.3.2.5, B5BD74ACD

9CE95E 54CC 200 ECD5, D5 5'AB9ACDBA EC98C9CE CEC9

FCC7 677 E9E74895" 49  10 7  C 48D7DC C4C9A

F5FB695" BF5B595BD 679747  10 7 F5 B79C9 B Ethernet-10. 0CE

9C EC9CC, 5 E5#95 F5BD5C9C 6F9 BCDC" 97 5B95C DC9545 Fast

Ethernet, 4757A F5A4C9  9774C 90- 55 F5455 C67

65EED7D55. % BF548 579 65EED7D55 F5D5654 Fast Ethernet

E5#CD 75D7D8  F5495F4C6B95E C#EC,  65D55E 9CD 579C9" 97

5 49 BCD, 7 5BD7DBA D54865 579C9A 97 49  CB6

BCEC9D5, B5C9A B5BC9C BD5"BD7 (77FDC – 65EED7D5 4

65EED7D5 – 65EED7D5).

3D797D IEEE 802.3u 5FCC4ACD 3 BFC!67!  CB655

59A Fast Ethernet, 9CB5ECBDE  B 5E:

• 100Base-0X – 4A FCC7 799 BF548 DBA C

9C6795799C F7 UTP 67DC5 5 4 STP Type 1;

• 100Base-04 – 4A FCC7 799 BF548 DBA CDC

9C6795799 F7 UTP 67DC5" 3, 4 4 5;

• 100Base-FX – 4A FCC7 799 BF548 DBA 7 545697

E955E5555 2+&.

3.3.1.1. EFADD6DD 100Base-X D 100Base-FX.

0C9545 100Base-0X  100Base-FX, 9CBE5DA 97 BF548 579C

7 9 67C489 BBDCE, ECD E955 5C5 B D56 C9A F5BD5C9A

 96!59579A,  D5E B4C, 59765" ECD5 45CB655

65579A – 42/52 F 7 49 ECD57  CB655 65579A –

MLT-3  100Base-TX  NRZI  100Base-FX.

&5EC D55,  DC9545 100Base-TX ECCDBA 96!A

7D5FCC555, 5CBFC77A 7D5E7DCB65C 5FCC4C9C B655BD

FCC7 (10 4 100 D/B) EC# EA BA 799E BD5"BD7E (3(,

659!C9D7D5, 65EED7D5) FDCE F5B46 F F564C9 F76

BFC!7489 EF48B5 FLP – Fast Link Pulse burst – B5 BD559

BD5"BD7, 65D55C E5#CD 75D7D8 97 B655BD 100 D/B. 3B4

BDC95C BD5"BD5 9C 5D6467CDBA 97 D EF48B, D5 5 977CD, D5

595 E5#CD 75D7D8 D54865 97 B655BD 10 D/B,  FC5C BD5"BD5

BD79747CD C#E FCC7 799 10 D/B.

3.3.1.2. EFADD6D 100Base-4.

& E5EC9D F5A4C9A Fast Ethernet 5489BD5 123 Ethernet 

67CBDC 67C4895" BBDCE BF548 574 9C6795799 D F7

67DC5 3. 8C479C B579D8 67C489 BBDCE 10-EC7D9 123