687983_a1d9b_aliev_t_i_seti_evm_i_telekommunikacii
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3.2.4. 79 9A6 675786 DEF Ethernet
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E32 2A4 E6CA6 6 6 63657 TPDV : Tmin > TPDV .
9 E74895C CEA Tmin FC C 7 67 7 B A 795 B E 9 E74895" 4 95" 67 7 lmin F 5F B695" BF5B5 95BD8 679747 B A (
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5. 17BBE5D E BCD Fast Ethernet Gigabit Ethernet. |
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% BD8: v = 108 / ; |
lmin = 64 7C5 = 512 45 , |
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% 5F B69 C BF5B5 95BD BCDC" Fast Ethernet (FE) Gigabit Ethernet |
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(GE) B55D CDBD C995 7 9: (FE = 108 45 / (GE = 109 45 / . |
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2 *108 |
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2 *109 |
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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:
205
123456 3. 78926ABC5 DCEF 6F 56ABC5 5 F
lmin |
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2 * 200 *109 |
= 400045 = 5007C5. |
v |
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108 |
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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 |
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BC EC9D7, |
65D5 7A |
7 B D 5D |
4 9 |
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BC EC9D7, bt |
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97 1 E, bt |
EC9D7, E |
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10Base-5 |
11,8 |
46,5 |
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169,5 |
0,0866 |
500 |
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10Base-2 |
11,8 |
46,5 |
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169,5 |
0,1026 |
185 |
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10Base-T |
15,3 |
42,0 |
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165,0 |
0,113 |
100 |
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10Base-FB |
- |
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24,0 |
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0,1 |
2000 |
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10Base-FL |
12,3 |
33,5 |
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156,5 |
0,1 |
2000 |
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FOIRL |
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7,8 |
29,0 |
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152,0 |
0,1 |
1000 |
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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.
206
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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:
v5 = 1000 106[ / ] ≈ 115,5*106[ / ] = 115500 [ / ] ; 8,66
• 4A D5965 5 6576B 74895 5 67 C4A:
v2 = 1000 106[ / ] ≈ 97,5*106[ / ] = 97500 [ / ] ; 10,26
• 4A D5" F7:
v1 = 1000 106[ / ] ≈ 88500 [ / ] ; 11,3
• 4A 5FD CB65 5 67 C4A:
vF = 1000 106[ / ] = 100000 [ / ] ; 10
k5 = 300000 ≈ 2,6 ; 115500
k2 = 300000 ≈ 3,1; 97500
kT = 300000 ≈ 3,4 ; 88500
kF = 300000 = 3. 100000
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 9CB6 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.
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17 84 |
7 3.4 |
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0 F BC EC9D7 |
%C C 7 " BC EC9D, |
% 5EC# D5 9 " |
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bt |
BC EC9D, bt |
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10Base-5 4 |
16 |
11 |
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10Base-2 |
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10Base-FB |
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2 |
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10Base-FL |
10,5 |
8 |
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10Base-T |
10,5 |
8 |
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207
123456 3. 78926ABC5 DCEF 6F 56ABC5 5 F
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
CF [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 C 3 [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 Λ [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 Λ [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.
2) |
Tmin=67,2 E6B |
7"D: |
8 |
14 |
46 |
4 |
96 bt |
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% |
&7min |
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&7 |
% |
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7"D: |
8 |
&7max
14 |
1500 |
4 |
&7 |
% |
&7 |
96 bt |
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t |
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/) Tm7=1230,4 E6B
3.26
924 26% ) 46 B F C7E 45":
Lmin = 87C5(F327 87) + 64 7C57(7 3) = 72 7C57* 8 45 = 57645; Tmin = 57645* 0,1 = 57,6 + 9,6 (2% 7 3.4A523E78) = 67,2 ;
Λmax = 1/ 1min 14880 7 36E / .
924 2! 26% ) 46 B F C7E 45":
Lmax = 8 7C5(F327.) + 1518 7C5(7 3) = 1526 7C5*8 45 = 12208 45;
Tmax = 12208 45* 0,1 = 1220,8 + 9,6 ( 2% 7 3.4A5.) = 1230,4 ;
Λmin = 1/ Tmax 813 7 36E / .
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 7 5 9 BC6 9 5D 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:
208
123456 3. 78926ABC5 DCEF 6F 56ABC5 5 F
( |
min |
= 14880* 46 *8 = 5,48 ' 45/ ; |
k |
min |
= |
Cmin |
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= 0,548; |
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( |
max |
= 813*1500*8 = 9,76 ' 45/ ; |
k |
max |
= |
Cmax |
= 0,976. |
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%54 C99 C |
97 C9 A F567 7DC4C" |
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F 5 5 DC4895BD |
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65 ! C9D7 BF548 5 79 A 679747 B A 9C D 7 D F36 564 254 |
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5 9 67 C F |
FC C 7 C 799 6884 44, 97 DC4895 B9 #7 C |
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C7489 F 5F B69 BF5B5 95BD8 123 Ethernet. |
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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 CBCDA Ethernet-10. 2 B A B D E BC 5D4 A Fast Ethernet 5D Ethernet-10
B5B C 5D5 C9 97 CB65E 5 9C.
2Fast Ethernet F C BE5D C9 3 7 79D7 7 289ABD 4 52:
•E95 5E5 5 " 2+& (BF548 CDBA 2 545697);
209
123456 3. 78926ABC5 DCEF 6F 56ABC5 5 F
•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 A96! 59 5 79 A, D5E B4C, 5 9765 " ECD5 45 CB65 5 65 5 79 A – 4 2/52 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
210