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LAN (Local Area Network)

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2013 5 8 LAN (Local Area Network) ... – PowerPoint PPT presentation

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Title: LAN (Local Area Network)


1
???????????
????????? 2013?5?8? ???
2
????????????
  • LAN (Local Area Network)
  • ?????????????????????????????????????????????
  • WAN (Wide Area Network)
  • ?????????????????????????LAN?,NTT???????????????
    ?(????)?????????????????

3
LAN?WAN
??A
??C
LAN
LAN
WAN
LAN
LAN
??B
??D
4
????????????
  • ???????(Internet)
  • ???????????? ???????????????????
  • ???????(Intranet)
  • ??????????????
  • LAN????????????? ?????????????????

5
???????(Protocol)
??????????????????????????(????)???????????? (a)T
CP/IP(Transmission Control Protocol / Internet
Protocol) ????????????????(UNIX???????)???.
?TCP?IP?????????,????????????.
6
???????(Protocol)
??????? ??????????????????????????(????) ???????
?ISO?OSI????????????7?????
?? ? ? ? ?
7 ????????? ??????????????????
6 ?????????? ????????????????????
5 ?????? ????????????????????
4 ???????? ??????????????????
3 ??????? ???2?????????????????
2 ??????? ???????????????????????
1 ??? Ethernet??????????????
7
???????(Protocol)
??????? TCP/IP??????????TCP?IP??? TCP
(Transmission Control Protocol) ??????????????????
??????????????????????????????????????????????????
????????????????????????? IP (Internet
Protocol) ????????????????????IP????(??)????????IP
??????????????????????????????????????????
8
???????(Protocol)
TCP/IP??????????????????????? FTP (File
Transfer Protocol) 2?????????????????????????
HTTP (Hyper Text Transfer Protocol)
WWW???????????????????????? SMTP (Small Mail
Transfer Protocol) ??????????????????????SMTP???
?? ????????SMTP????????
9
???????(Protocol)
TCP/IP??????????????????????? POP3 (Post Office
Protocol version 3) ???????????????????????????
IMAP (Internet Message Access Protocol)
POP????????????????????????????
????????Re???????????????????? MIME (Multiple
Internet Mail Extensions) ?????????????????????
????????? ?????????
10
IP????
  • ????????????????????
  • 32bit?????,8bit????????
  • (0255?????????)
  • ???PC???????IP???????

Ex. OS Windows 7 Windows?????????????????????????
???? CUI????????????Z\gt??? ipconfig????? Enter
?????
11
IP????
  • ???PC???????IP???????

Ex. OS Windows 7 Windows?????????????????????????
????? CUI????????????Z\gt??? ipconfig????? Ente
r?????
12
IP????
  • ????????????????????
  • 32bit?????,8bit????????
  • (0255?????????)

192.128.01.01
192.128.01.02
192.128.01.03
192.128.01.04
192.128.01.05
192.128.01.06
13
IP????
  • ?????????????????????
  • 1??????????????????????

192.128.01.001 - 192.128.01.210
Ex. ???30??? MDECASK210?

??????????????
14
IP????
  • ?????????????????????
  • 1??????????????????????

192.128.02.01-30
192.128.03.01-30
192.128.01.01-30
E
D
M
SK
A
C
192.128.06.01-60
192.128.04.01-30
192.128.05.01-30
15
IP????
  • ?????????????????????
  • 1??????????????????????
  • ????????????????????????????????????????

????????
???????????
????????
192.128.01.01-30
255.255.0.0
HUB
16
IP????
  • ???PC???????IP???????

Ex. OS Windows 7 Windows?????????????????????????
????? CUI????????????Z\gt??? ipconfig????? Ente
r?????
17
IP????
  • IP????????2?????
  • ?????IP????
  • ????1?????????
  • ??????IP????
  • LAN?????????????????

??????IP???????????????????????????IP??????(NAPT
Network Address Port Translation)?NAT (Network
Address Translation)???
18
IP????
  • ???IP????
  • IPv6 (Internet Protocol version 6)
  • ???IP?????32bit????????,IP???????(IP????????).
  • IPv6?128bit?IP???????????????????.

???????????IPv6???????
2011?4?15?????? APNIC (Asian-Pacific Network
Information Center) ????IPv4?????????????????
??????APNIC?????????????????
19
LAN?????
20
????
  • ??(HUB)???????????
  • ?????????????????
  • ?????????? (UPT Unshielded)
  • 100Mbps?????????????
  • ?????? (SPT Shielded)
  • 100Mbps????????????
  • ?????
  • ?????(1Gbps)???????(?????)

21
LAN??????????
????????????,????,???????
22
????
????????????????????????(??) ?,LAN???????. ??????
??????????????????,??? ??????. ?1???????????????,L
AN??????? ?????? ?) Ethernet (1000BASE-T) ???????
????? ???????
23
????
???????????1????????(??????, LAN???????. ???????
????????. ??????????????,LAN??????????. ?)???????,
FDDI ???????????????
24
???
?????????1????????(??)????,LAN ???????. ??????????
?????. ??????????????,LAN??????????. ?????????????
???,?????????? ???(????)??????. ??)Ethernet(10BASE
-2,10BASE-5) ??,????????
25
????
  • Ethernet
  • ?????????????LAN?????? ????CSMA/CD (Carrier
    Sense Multiple Access/ Collision
    Detection)? ??????????????????????????(?????) ???
    ????????????
  • 1000Mbps??????????1000BASE-T???
  • ???????
  • ?????????
  • ?????????????
  • ??????????????????????????????? ????????????????
    ?(?????)??????
  • FDDI (Fiber Distributed Data Interface)
  • ??????????????????????????????? ?????????????

26
LAN??????
  • LAN?????
  • ??????????????????????
  • ????????
  • ???
  • ????????????????(????)???? ??????????????
  • Ex. ADSL???????????
  • ?????????(Terminal Adapter)
  • ISDN???????????????????????
  • LAN???????
  • ?????????????

27
?????????
  • LAN?????????????????,?????????????????????
  • ????????
  • LAN???????????????????????,?? ??(???)?LAN???????
    ??????
  • DHCP (Dynamic Host Configuration Protocol)???
  • ??????????????????????IP???? ???????????????????
    ??
  • ISP (Internet Service Provider)???????????? ????
    ???????IP???????????

28
????????
  • ??????????????????????????????????????????????????
    ???

????
  • ???????
  • ??????????????????????????? ????.???????????????
    ??????? ?????????.

29
  • ??LAN
  • LAN????????????????????????
  • Ethernet??
  • IEEE802.11b - 11Mbps
  • IEEE802.11a, IEEE802.11g 54Mbps
  • IEEE802.11n 100Mbps?

??????????LAN???????????? ??????????????????????
30
  • LAN?????????
  • ???????????????????
  • ???2??
  • ????????
  • LAN?????????????????????????????????????
  • ??????
  • ???????????????????????????????????????????
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