30 .
.
:
1. 1 ( 1)
2. 2 ( 2)
3. Ethernet.
4. FastEthernet.
5. .
( ).
1
1. .
2. , 10 BASE - T.
3. .
4. , 10 BASE2.
5. , 10 BASE5.
6. , 100 BASE - TX.
7. Ethernet.
8. . 10 BASE - T.
9. (DCC) OC Windows.
10. LPT - : , LPT DOS Windows.
11. .
12. .
13. "".
14. ARP RARP.
15. .
16. , .
17. "".
18. .
19. , .
20. . .
21. Ethernet.
22. - , , , .
23. . . - . .
24. , .
25. FastEthernet.
26. . , , .
27. .
28. .
29. DNS: , , , .
30. IR (, , ).
2
1. Radio Ethernet.
2. WIFI ( ).
3. .
4. : , .
5. CSMA/CD.
6. . ST, SFTP UT . .
7. .
|
|
8. 86 (PCI,IDE,SATA ..).
9. \.
10. \.
11. HDD .
12. , , BIOS .
13. - . , , .
14. TCP/IP.
15. Internet.
16. , , IP - .
17. Internet, .
18. OSI.
19. , .
20. , , IP .
21. Ethernet: , .
22. : , , .
23. - .
24. . , , .
25. : ,
26. - .
27. - .
28. - .
29. . .
30. .
1. Ethernet
/ | 1 | 2 | 3 | 4 | 5 | 6 |
1. | 120. | 1005. | 503. | 504. | 602. | 105. |
2. | 121. | 1006. | 505. | 506. | 603. | 106. |
3. | 122. | 1007. | 507. | 508. | 604. | 107. |
4. | 123. | 1008. | 509. | 510. | 605. | 108. |
5. | 124. | 1009. | 511. | 512. | 606. | 109. |
6. | 125. | 1010. | 513. | 514. | 607. | 110. |
7. | 126. | 1011. | 515. | 516. | 608. | 111. |
8. | 127. | 1012. | 517. | 518. | 609. | 112. |
9. | 128. | 1013. | 519. | 520. | 610. | 113. |
10. | 129. | 1014. | 521. | 522. | 611. | 114. |
11. | 130. | 1015. | 523. | 524. | 612. | 115. |
12. | 131. | 1016. | 525. | 526. | 613. | 116. |
13. | 132. | 1017. | 527. | 528. | 614. | 117. |
14. | 133. | 1018. | 529. | 530. | 615. | 118. |
15. | 134. | 1019. | 531. | 532. | 616. | 119. |
16. | 135. | 1020. | 533. | 534. | 617. | 120. |
17. | 136. | 1021. | 535. | 536. | 618. | 121. |
18. | 137. | 1022. | 537. | 538. | 619. | 122. |
19. | 138. | 1023. | 539. | 540. | 620. | 123. |
20. | 139. | 1024. | 541. | 542. | 621. | 124. |
21. | 140. | 1025. | 543. | 544. | 622. | 125. |
22. | 141. | 1026. | 545. | 546. | 623. | 126. |
23. | 142. | 1027. | 547. | 548. | 624. | 127. |
24. | 143. | 1028. | 549. | 550. | 625. | 128. |
25. | 144. | 1029. | 551. | 552. | 626. | 129. |
26. | 145. | 1030. | 553. | 554. | 627. | 130. |
27. | 146. | 1031. | 555. | 556. | 628. | 131. |
28. | 147. | 1032. | 557. | 558. | 629. | 132. |
29. | 148. | 1033. | 559. | 560. | 630. | 133. |
30. | 149. | 1034. | 561. | 562. | 631. | 134. |
31. | 150. | 1035. | 563. | 564. | 632. | 135. |
32. | 151. | 1036. | 565. | 566. | 633. | 136. |
33. | 152. | 1037. | 567. | 568. | 634. | 137. |
34. | 153. | 1038. | 569. | 570. | 635. | 138. |
35. | 154. | 1039. | 571. | 572. | 636. | 139. |
|
|
Ethernet
PDV
1 | |||||
10Base-5 | 11.8 | 46.5 | 169.5 | 0.0866 | |
10Base-2 | 11.8 | 46.5 | 169.5 | 0.1026 | |
10Base-T | 15.3 | 42.0 | 165.0 | 0.113 | |
10Base-FB | - | 24.0 | - | 0.1 | |
10Base-FL | 12.3 | 33.5 | 156.5 | 0.1 | |
FOIRL | 7.8 | 29.0 | 152.0 | 0.1 | |
AUI (> 2 ) | 0.1026 | 2+48 |
PVV
10Base-5 10Base-2 | ||
10Base-FB | - | |
10Base-FL | 10.5 | |
10Base-T | 10.5 |
2.
FastEthernet
Ethernet
PDV
bt 1 | ||
UTP Cat 3 | 1,14bt | 114bt (100) |
UTP Cat 4 | 1,14bt | 114bt (100) |
UTP Cat 5 | 1,112bt | 111,2 bt(100) |
STP | 1,112bt | 111,2 bt(100) |
1,0 bt | 412 (412) |
, ( ), .
TX/FX | 100bt |
T4 | 138 bt |
TX/FX 4 | 127 bt |
3.
. | . | . . | |||
1, 2, 3, 4, 5 | |||||
1, 2, 3, 4, 5 | |||||
1, 3, 5, 7, 9 | |||||
2, 4, 6, 8, 10 | |||||
1, 2, 5, 7, 9 | |||||
3, 4, 5, 6, 7 | |||||
20, 21,22, 23 | |||||
1, 2, 3, 49, 50 | |||||
3, 4, 23, 24, 25 | |||||
7, 8, 27, 28, 29 | |||||
13, 20, 23, 24, 25 | |||||
15, 16, 17, 18, 19 | |||||
1, 2, 3, 24, 25 | |||||
17, 18, 19, 20, 21 | |||||
11, 12, 13, 14, 15 | |||||
21, 22, 23, 24, 25 | |||||
10, 11, 12, 29, 30 | |||||
22, 23, 24, 25, 26 | |||||
2, 3, 4, 12, 13 | |||||
10, 11, 12, 19, 20 | |||||
20, 21, 30, 31, 40 | |||||
1, 11, 21, 31, 41 | |||||
10, 20, 30, 40, 50 | |||||
1, 2, 3, 11, 12 | |||||
90, 91, 92, 93, 94 | |||||
21, 22, 31, 32, 33 | |||||
11, 22, 33, 44, 55 | |||||
55, 66, 77, 88, 99 | |||||
1, 3, 6, 7, 8 | |||||
2, 3, 4, 5, 9 | |||||
1, 122, 123, 125, 127 | |||||
2, 3, 20, 30, 120, 130 | |||||
13, 14, 15, 16, 17 | |||||
3, 5, 7, 9, 11 | |||||
21, 22, 23, 41, 49 | |||||
31, 32, 33, 34, 35 | |||||
66, 67, 68, 69, 70 | |||||
47, 48, 49, 50, 51 | |||||
10, 20, 30, 40, 50 | |||||
60, 70, 80, 90, 99 | |||||
13, 20, 23, 24, 25 | |||||
15, 16, 17, 18, 19 | |||||
1, 2, 3, 24, 25 | |||||
17, 18, 19, 20, 21 | |||||
11, 12, 13, 14, 15 | |||||
21, 22, 23, 24, 25 | |||||
10, 11, 12, 29, 30 | |||||
22, 23, 24, 25, 26 | |||||
2, 3, 4, 12, 13 | |||||
10, 11, 12, 19, 20 | |||||
20, 21, 30, 31, 40 | |||||
1, 11, 21, 31, 41 | |||||
10, 20, 30, 40, 50 | |||||
1, 2, 3, 11, 12 | |||||
90, 91, 92, 93, 94 | |||||
21, 22, 31, 32, 33 | |||||
11, 22, 33, 44, 55 | |||||
55, 66, 77, 88, 99 | |||||
1, 3, 6, 7, 8 | |||||
2, 3, 4, 5, 9 | |||||
1, 122, 123, 125, 127 | |||||
2, 3, 20, 30, 120, 130 | |||||
13, 14, 15, 16, 17 | |||||
3, 5, 7, 9, 11 | |||||
21, 22, 23, 41, 49 | |||||
31, 32, 33, 34, 35 | |||||
66, 67, 68, 69, 70 | |||||
47, 48, 49, 50, 51 | |||||
10, 20, 30, 40, 50 | |||||
60, 70, 80, 90, 99 |
|
|
1
Ethernet
, Ethernet, , , , :
- 1024 ( ).
- (Path Delay Value, PDV) 575 .
- (Interpacket Gap Shrinkage) , 49 (, 96 ).
, , .
|
|
.
, . , , , . , . , , . 49 . Segment Variability Value, SVV, - Path Variability Value, PVV. , PVV SVV , .
PDV
, , . 3 , PDV Ethernet, Technical Reference Pocket Guide (Volume 4, Number 4) Bay Networks.
3.
1 | |||||
10Base-5 | 11.8 | 46.5 | 169.5 | 0.0866 | |
10Base-2 | 11.8 | 46.5 | 169.5 | 0.1026 | |
10Base-T | 15.3 | 42.0 | 165.0 | 0.113 | |
10Base-FB | - | 24.0 | - | 0.1 | |
10Base-FL | 12.3 | 33.5 | 156.5 | 0.1 | |
FOIRL | 7.8 | 29.0 | 152.0 | 0.1 | |
AUI (> 2 ) | 0.1026 | 2+48 |
, , , 11.
. 11. Ethernet,
, ( Tx) . ( Rx) , . , , (, ). , , ( ) .
PDV . , .
, : , - , PDV. - 10Base-T, , , 1, 5.
PDV .
1: 15.3 () + 100 0.113 / = 26.6
2: 33.5 + 1000 0.1 = 133.5
3: 24 + 500 0.1 = 74.0
4: 24 + 500 0.1 = 74.0
5: 24 + 600 0.1 = 84.0
6: 165 + 100 0.113 = 176.3
PDV, 568.4.
PDV 575, . , 2500 .
PVV
PVV ( 4 , ).
|
|
4.
10Base-5 10Base-2 | ||
10Base-FB | - | |
10Base-FL | 10.5 | |
10Base-T | 10.5 |
PVV .
1 10Base-T: 10.5
2 10Base-FL: 8
3 10Base-FB: 2
4 10Base-FB: 2
5 10Base-FB: 2
PVV, 24.5, 49 .
, Ethernet.
1. Ethernet.
2. .
3. 10BASE-T 575 .
4. .
5. .
2
Fast Ethernet
, .
, Fast Ethernet , 100BaseT , , 100BaseT.
, 100BaseT, Ethernet 10/100 /. ( 100BaseT ) 10 / 100 /.
Fast Ethernet : , , , . , - DTE (Data Terminal Equipment).
, - . , , () , , , , .
DTE, , , , .
Ethernet 802.3:
- 1024
-
- (Path Delay Value, PDV) 575
- IPG (Path Variability Value, PVV) , 49
Fast Ethernet, MAC (Media access control) Ethernet, - PDV 575 .
- PVV , 49 , Fast Ethernet , . - Fast Ethernet .
Fast Ethernet :
, - ( DTE- DTE);
, - (DTE) ;
;
, .
Fast Ethernet - (DTE) , .
DTE-DTE ( ), / - , .
IEEE 802.3u , - (DTE-DTE)
100Base-TX | Category 5 UTP | 100 |
100Base-FX | 62.5/125 | 412 () 2 ( ) |
100Base-T4 | Category 3,4 5 UTP | 100 |
Fast Ethernet.
Fast Ethernet .
I : 4/5, 8/6.
II - - 4/5, 8/6.
I Fast Ethernet: