?????????????????????,??????????????????????????????????????????????????????,????????????,???????IP?????????,????????????

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Title:

?????????????????????,??????????????????????????????????????????????????????,????????????,???????IP?????????,????????????

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Title: 3 Last modified by: user Created Date: 7/12/2002 12:39:47 AM Document presentation format: – PowerPoint PPT presentation

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Transcript and Presenter's Notes

Title: ?????????????????????,??????????????????????????????????????????????????????,????????????,???????IP?????????,????????????

1
?3? ??????????

?????????????????????,????????????????????????????
??????????????????????????,????????????,???????IP?
????????,????????????

2
3.1 ??????
1???
3

?????????????

????????
??????(??????????)
???
????
4
2??? ????????????????????? ????????????????????
????????
5
3???????????TCP/IP?? ??????????????????????(?P6
1?3-1) ???,????IP???????????????????????????????TC
P???????????????????????
6
3.2 ????????

???????
?????????????????????????????????
?????????????????????
????????????????????????????????????????????????
(??Hz)
(??P29????)

?????????????????????????(?????,??bps)
???????(band)?????????????????????
?????????,???????
?????????,???????

????????????

9
??????3000Hz,????30dB(??)????(?????????????)?????
???????
W3000Hz,S/N30dB,???????
10
?? 1???????????,?????,???????? 2?N?0?,C?8,??????,
???8,???(??)??? ????????????????? ??????
(bps) k?????????????
11
????????????????????3kHz,???????????
??????????k2,W3000Hz
??
12
3??????,W?S/N???????????,???????,??????????
13
?????? ????????(FDM)???????(TDM) ????????????????
???? ????????????????? ??????????(WDM)???????????,
????????? ????????,???????????(CDMA)?
14
????? FDM???????????,??????????,????,???????????
?????,????? TDM???(???????????????,?????????)????
????,????????,???????????????????????????,????????
????(??)? CDMA???????????(????,???????)?????????
15
??????????????? 1??????????????? 2???????????
????? 3????????????????????????????
16
??????????? ??????????????????????????(?C/S?????
??????????) ??????????????????????(?C/S?????????
????,??????) ???????????????,??????? ??????,??????
???????????
17
????????????? 1?RS-232????ASCII? ?0?????,?1??????
??????????????????(?P71?3-7) ??????1100100???
????
1 1
0 0
1
0 0
????
18
2??????? ?????????,??????????????1??,?????????????
?0???(?P71?3-8)
1
1
1
0
0
0
0
19
3????????? ??????????????????1?,??????????????????
??????????????0?,????????????????????????????(?P7
1?3-9)
???????????????
???????????????
1
1
1
0
0
0
0
???????????????
???????????????
20
??????????????????(????,??????????)???? ????????
?????(??????)? ????????????,??????????????????????
????,?????????
21
??????????? ??P29????,??????? ?????????????? ????
????P71???1?? ??????Modem?
22
?????(Repeater)????(Switch) 1???? ????????????? ?
???????????????,??????????????,???????? ???????
???,????????????????
23
????40??????,????4???,?????10????????2???(??12???
,??28???)????????????????? ????????,?????????????
?,??????????????
24

2????
?????????
? ????????????????,?????,??,????????????
? ?????,??????,???????,??????????????????

????????????
? ??????????????????????????????????,??????MAC(???
???,Media Access Control)???,?????????????????????
??????,????????,????????????????,?????????????????
????????
? ?????????????????

????????????????8?10Mbps???,????????????????????,
??????????????10Mbps?
???????????????,??????????????????????,??,????????
???7?,?80Mbps(810Mbps)?

??????
? ??????????
??????????
? ??????????????????
????(??????????)?????(??????????)?
? ??????
?????????????????,?????????,???????????????????
??????????????????,???????????????????

28
3.3 ?????

??????
1???
???(Lacal Area Network),??LAN???????????(?????????
)?,????????????????????????????????
2???(??P79-80 ??)

29
3????? ?????????????????????????? ????????????(
????,IEEE802.5,4Mbps?16Mbps)????(????,IEEE802.3,??
?10Mbps?100Mbps,?????1000Mbps)?
30
???
31
??
32
??
33

??????
????????IEEE 802???????????????,????(PHY)????????
(MAC)????????(LLC)?
?P83?3-18,?????OSI??????
IEEE 802???11????(?P82-83??3-19)

????????
1???????
??????????????(?????)?
??????????????
?????????????????
? ????????????????,????????????,????,????,????????
???
? ???????????????,????????????,?????????????
? ????????????????????????????

35
2??????? ????????????????????????? ?
????,??????????????????????,?????????????????? ?
????,??????????????????????????????????????????
?
36

???????
? Ethernet???
Ethernet???????,??????????????????????????(??)????
???(10Base5)???????????500m??,????????????3m?
??????????10Mbps
???????????100Mbps
??(??)?????????1000Mbps(1Gbps)?
???????IEEE 802.3

37
(No Transcript)
38
(No Transcript)
39
(No Transcript)
40
???????,??,????????????????(??????????P85?3-20(a))
?,???????????? ?????????????IEEE802.3?CSMA/CD???
41

CSMA/CD??
(Carrier Sense Multiple Access/Collision Detect)
(????????/????)?
???????
? ???????,??????(????,?/?)????
? ????(??)??,??????????
? ????(??)???(?),?????????????????????????,???
???

42
? ?????????????(????,??????)???? ?
???????,????????????????,??????(???????)????????
?,???????????,????????????????? ?
???????????????,?????????(??????????)????????????
?,??????????,???????
43
????????? ? ?1??????,???????0?1???????? ?
??(?2?)?????,???????0?1?2?3?????? ?
?3??????,???????0?23-1??????? ?
??i????,???????0?2i-1??????? ?
??10????,??????????1023 ? ??16????,???????,??????
??
44
? token ring network???? ?????IEEE
802.5,?????????????????(token)? ??????????????
??????,?????????????(???1?1µs),?????????????? ????
????????,?????????????????????,?????????? ??,?????
???????,??,????????????????????????,??????????????

45
????????????16Mbps? ?????????????????(???????????
????????),??????????? ??????????(?????????,??????
??,????),???????????????
46
(No Transcript)
47
? FDDI???????? ????????100Mbps??????,???????????
???????????? ????????,?????????????????????,??????
?? ???????????????????????????,???????????????,??,
??????????,????????(?P89?3-22)
48
(No Transcript)
49
(No Transcript)
50
? VLAN????? ??,?VLAN???????????????????VLAN?????
?????????????,??VLAN???????????????,??????????????
???,??????????????????????????????????????????VLAN
??????????? VLAN?????IEEE 802.1Q
51
(No Transcript)
52
VLAN???????(P91) ? ?????VLAN ? ??MAC???VLAN ?
???3??VLAN ? ?????VLAN
53
??,VLAN???????,????????????????? ?
??????????????,????????,?????? ?
VLAN???????,??VLAN???,?????? ?
?????????????VLAN,???????? ? ?????????,??????????
? ? ???????????????
54
3.4 ???????

MAN????LAN?????????,??????????,???????????
??MAN??????
IEEE 802.6,
??????????(DQDB)

55
(No Transcript)
56
???? ????????????????,?????????????????????(head-
end),?????????53??????,???????????????????,???????
,???????? ??????44???????,????????????????????????
?,??????A,??,?????B?????????????????,?????????????
? ??????160km,??44.736(T3)-155Mbps(ATM)
57

??????
? CATV??????
???Modem????300MHz?????????????,????????????CATV
Modem(???)?????(?P94?3-24)

???????
95???,???????,???????????????,????????????????
?3.8??,???????????(HFC)???????????,?????????????,?
????????????????????????750MHz HFC????ATM???????,?
????300????,???????500????

? ISDN???????
1???P95???
??20??80???CCITT(????????????)??,????????????????
?????1984??1988??ITU-T?N-ISDN(??ISDN)?????????1999
????????????
2???P95
3?????
??????????,???????????????????????

60
(No Transcript)
61

????
NT1???????????????????ISDN??????
NT2???2??,????????(PBX)????????????
TE1???ISDN?????
TE2?ISDN?????
TA ISDN???,????ISDN???????ISDN??

4????
?????????????
U?????ISDN????NT1??????
T?NT1??????????????
S?NT2(?ISDN PBX)?ISDN????????
R??????(TA)??ISDN????????

7??????
A?B?C?D?E?H??????(P97)
3????????
2B1D?23B1D
?30B1D?1A1C (P97)

64
4???ISDN?ATM ????????,N-ISDN?????,???????????????
??(VOD)????,N-ISDN?????????ATM??????B-ISDN????????
? B-ISDN???P98?
65
3.5 ??????
???????? ????????????????????????????????????????,
??????????????,?????????????? ???????????????(?P99
?3-27)???????????????
66
????????? ???????,?????????????,?????????????????
????????????????????????????????????????????,????
??????????????????????,??????????????????? ???????
?????????????,??,???????,??????????
67
1?????????????,????????I/O??????????CPU? ????????
????????(packet)??????????,????????,??????????(???
??)?,???????????,?????????????????????????????????
????????????
68
2????????????????? ?????????????,????????????????
I/O?????????????,?????????????????????????????????
???????????????,????,??????????????????????,??????
?,?????????
69
?????????????????????,???????????????????? ???????
?????P101-102
70
(No Transcript)
71
?????????????,????????
72
????????? ????,?????B??????????192.4.10.3????,???
????????
30.0.0.7
40.0.0.8
128.1.0.8
??1 30.0.0.0
??2 40.0.0.0
??3 128.1.0.0
???A
???B
40.0.0.7
128.1.0.9
???C
192.4.10.9
?a ????????
??4 192.4.10.0
73
?b ???B??????
??? ? ? ???
30.0.0.0 255.0.0.0 40.0.0.7
40.0.0.0 255.0.0.0 deliver direct(????)
128.1.0.0 255.255.0.0 deliver direct(????)
192.4.10.0 255.255.255.0 128.1.0.9
????????????????? ???255.0.0.0 192.4.10.3 ?
30.0.0.0,????? ???????,?????? ???255.255.255.0
192.4.10.3 192.4.10.0,???????,??,??????????128
.1.0.9?
74

?????????
???????????????????????,?????????????????????,???
????????,???????
?????????????????????,???????????

75
?????????? ??????????(PSTN)????????(??X.25?)?????(
Frame Relay)??????(DDN)?? ? ???????(X.25?) 1?X.25?
???? ? ???????????,???????? ? ????,X.25??????????
?? ? ????,?????????? ? ?????????,??????? ?
?????,?????,????? ? ?????2400b/s?64kb/s?
76
2?X.25?????????????????????????????????X.25?????
???????????????????X.25??? X.25????3??? ?????????
????X.21???,???????RS-232??? ????????????????,????
????LAPB,??HDLC?1???? ???????,DTE(??????)?DCE(????
????)????????????(0-4095),1?DTE???????????????????

77
? ????(Frame Relay) ??????????????????????????????
???????????????????????????????????,??????????????
???????? ???????????56Kbps?1.544Mbps??????????????
??X.25?????????????????X.25?????,?????????????,???
????????????????????????????????????????,?????????
?????????????????
78
??????????????????????????????????????????????????
???????????,?????LAN?????
79
???????????? 1) ???????????????,?????????????????
(???????)????????????????????? 2)
????????????,???????,?????????????????(??????????)
,????????????????????????????(PVC)???????(SVC)?
80
3) ???????X.25?????,????????,??????,?????,????????
???64kb/s?2Mb/s,?????34Mb/s? 4)
???????????X.25??????,???????1600??/?,????????????
?,????????(????????WWW???)?
81
????????
82
? SLIP?PPP ???????????????????????????? SLIP?????
?,??????PPP????PPP???P108? PPP??????????(LCP)?IP
????(IPCP)???????(PAP)? PPP???
83
????PC????????
84
? ?????(DDN) ??????(???????)??????????????????????
???,???????????????????????????,??????????????????
????????
85
??????????????????????????,???,??????????????????
?,??????????,?????????????,???????????,???????,??
????,??????????,??????,?????????? ????2400b/s204
8kb/s
86
DDN???????
87

? ??????(ATM)
????????????,??
ATM??????????????????????(Cell)?????????5???????4
8?????(Payload)????????,???????,????ATM???????????
???????

ATM??????????????ATM?????????????ATM???,ATM???????
???????(?????)??????????????,????ATM??????,???????
???????ATM?????????????155Mbps?

ATM???????????????????,???????????????????????????
,???????????????????????????,?????????????,???????
??????????????,????????????

ATM?????
??????(PVC)??????(SVC)?????SVC????????????????????
?,??????????PVC??????????????????,????????????
ATM????????

91
ATM??,???????????????,????????????????????????????
??????????????,?????????????????? ATM????????(VC)
??????(VP)???
92

?????????????????????ATM?????????????????,????????
?ATM???????????????????,???????????????????????
??????????ATM?????
1??????????,?ATM????????
2??????????,?ATM?????????????
3??????MAC?????????,?ATM??????????

93
3.6 ??????(IP)

??????????????,??????????????????
???(Hub)
1???????????????,?????????,??????????????????????
???????????????,??????????

94
2???????? ? ????? ????????????????? ?
????? ????Hub??,?????????,????????,??????????????
? ??????????????? 3??????????????????????????
95

??(Bridge)
1?????????????????,????????????????,?????????????
?,???????,????????????????????????????????,???????
???????????????

96
2?????? ?????? ? ??????????????? ???
????????????????? ? ?????????? ?
??????????MAN?WAN? ???????? ?
??????????????? ? ????????????????
97
3?????????????? ? ?????? ? ???????????,?????????
?????? ? ?????,??????????????????????(??????????,?
???) ? ?????? ? ??????????? ? ???????,???????????
98

???(Router)
1???????????????????????????????(????????????????
?),???????????????????,??????????????????,????????
?????????????????????,?????????????????????
????????????????????????????,????????????

99
2?????? ? ????????????????????????????(????) ?
????????????????(?????) ? ???????????????,???????
100
3?IP?? IP???,IP??????????????
????????IP????????????????????1??IP????????,??0?
?IP???????????????IP???????,???????????IP??????I
P??????IP???
101
?1?????255.255.240.0?B?IP??,????????????????? ???
??,?IP???B? (240)10(11110000)2 (0)
10(00000000)0 0????4812?? ??????????12?? ??,?IP
??????????212???,??????212-2??
102
?2?????C?IP????12???,?????????5???,??????????????
??,????????????????????????? ???
??23lt12lt24,??,?????4?????? ???22lt5lt23,??,?????3
??????? ??C???????255.255.255.X,?????????8(1???
) ??,X???????11111000?11110000, ?????? 255.255.2
55.248?255.255.255.240?
103
??????255.255.255.248,?????????25-230??????????
????23-26?? ??????255.255.255.240,?????????24-2
14??????????????24-214?? ????????????????
104
4???? ?? ?????(P129),???????U??,G????,H???
?????(P130),???????????????? ??????????(RIP),???
?????,??????????????? ??????????(EGP)???????(BGP)
?
105