2004?? ????????? ?2? TCP/IP??????

1
2004????????????2? TCP/IP??????

• ?? ??
• nishio_at_cs.ritsumei.ac.jp
• ?????
• ?????? ????????
• ??????????

2
Web??????

• http//www.ubi.is.ritsumei.ac.jp/nishio/lecture/
  ?????
• ??????????,
• ASCII?? NETWORK Magazine
• ????

3
(???)????????????LAN (Local-Area Network)
??? A
??? B

• LAN?????????????
• ?????????
• Peer to peer
• ????????????????
• ??,3????????????????

4
3?????
??? A
??? B
??? C

• ??????
• ???A?2??????
• ???B?????C????(????)?????
• ???A??????????????

5
3?????
??? A
??? B
??? C

• ??????
• ?????(??)?????
• ????????????
• ?????????????????
• ?????

6
3?????
??? A
??? B
??? C

• ??????
• ?????????? (??????)
• ???????????
• Ethernet?????
• CSMA??

7
??????
??? A
??? B
??? C

• ?????????????(???????)??
• ????????????????
• ???????????
• ???????????(?????)

8
????????
??? A
??? B
??? C

• ???????????
• Switching Hub???star???
• ?????????
• ?????????????????
• ????????LAN????
• A?B???LAN,C???LAN

9
LAN?LAN??????

• Wide-Area Network (WAN)???
• The Internet (TCP/IP Protocol Suite)
• ?????(??????)
• ????(DNS)
• ???????
• ??????????

10
TCP/IP

• ???????TCP/IP
• TCP?IP??????????????
• ???????TCP/IP
• IP?????????????????????
• IP,ICMP,ARP,TCP,UDP,RIP,HTML,SMTP,FTP,etc
• ???????????????

11
TCP/IP?????????
1960???? ???????????????????????
1969? ARPANET?? ???????????
1972? ARPANET???? 50??????????
1975? TCP/IP??
1982? TCP/IP???? BSD UNIX??????? BSD UNIX?TCP/IP?????????????????
1983? ARPANET?????????TCP/IP???
1989??? LAN??TCP/IP???????
1990??? LAN?WAN??TCP/IP????????
1995??? ?????????????? ISP?????
1996? ???IP?IPv6?????? RFC???
12
ISO 7?????
????????? ??????????????????????
?????????? ????????????????????????
?????? ????????? ??????
???????? ?????????????? ??????
??????? ??????? ????
??????? ???????????????????
??? ????????0?1???????????
13
ISO 7????????

• ISO 7??????????

14
TCP/IP???
ISO7????? TCP/IP???
?????????
??????????
??????
????????
???????
???????
???
????????? HTTP,SMTP,TELNET, FTP,SNMP,MIME,HTML,MIB
???????? TCP,UDP
???????? ARP,IP,ICMP
????? ???????ATM?FDDI?etc
15
MAC????

• IP??????????????????????????????????
• ROM??????????48bit????
• ?00-90-CC-20-93-D0

16
Ethernet?MAC????

• ??????????MAC??????????????
• ???????????????????(?????????????????)

??????A
??????B
17
IP(Internet Protocol)

• ??????????(???????????)??????????
• ?????????????????????????????

18
IP????

• ???????????????????????????????
• 32bit???????
• 8bit???????10???????
• ??????
• ??? 232 4,294,967,296

28 28
28 28 ??? 10101100
00010100 00000001 00000001 ??? 172 .20
.1 .1
19
(No Transcript)
20
IP????????(1)

• ????????????????????????
• ???A
• ??1bit?0????????
• 0.0.0.0 127.0.0.0??
• 16,777,214?????????
• ???B
• ??2bit?10????????
• 128.0.0.0 191.255.0.0??
• 65,534?????????

21
IP????????(2)

• ???C
• ??3bit?110????????
• 192.0.0.0 223.255.255.0??
• 254?????????
• ???D
• ??4bit?1110????????
• 224.0.0.0 239.255.255.255??
• ???????????IP??????????

22
(No Transcript)
23
???????????

• ??4bit?1110??????28bit?????????????????????
• ?
• 224.0.0.0 ??(??????)
• 224.0.0.1 ??????????????
• 224.0.0.2 ?????????????
• 224.0.0.14 DHCP???/?????????

24
????????????

• ????????????bit???1?????
• ??????????????????
• ?172.20.0.0 ???B(??16bit???)
• 10101100.00010100.00000000.00000000
• ???????????? 172.25.255.255
• 10101100.00010100.11111111.11111111

25
IP???????

• ICANN?????????
• (Internet Corporation for Assigned Names and
  Numbers)
• ????JPNIC???
• (Japan Network Information Center)
• ????IP?????????
• ???
• ???B 133.19.0.0
• 210.166.170.128/26