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LAN (Local Area Network)

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2014 5 2 LAN (Local Area Network) ... – PowerPoint PPT presentation

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Title: LAN (Local Area Network)


1
???????????
????????? 2014?5?2? ???
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?????????????????
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