LAN 0000000000 6/6, 6/13, 6/20
1 Linux UNIX-PC LAN. UNIX. LAN. UNIX. 1.1 UNIX LAN. 1.2 Linux PC Linux. 1.3 studenta odd kumabari studentb even kumabari studentc odd kumabari studentd even kumabari 1: LAN 1
1.4 Web (Apache) Web 1. Web 2. URL http://ip / 3. /home/httpd/html/index.jar 4. 5. PC 1.5 1. ping 2. arp. 3. telnet. 4. ssh. 2
1.1 IP 192.168.2.2,192.168.2.5,192.168.2.6. 192.168.2.5 1.2 Linux UNIX 1.3 studente odd, kumabari 1.4 Web (Apache) index.ja Web PC 1.5 ping ---------------------------------------------------------------------------- [studentd@pc-f studentd] ping 192.168.2.1 PING 192.168.2.1 (192.168.2.1) 192.168.2.6 : 56(84) bytes of data. 64 192.168.2.1: icmp_seq=0 ttl=64 =213 64 192.168.2.1: icmp_seq=1 ttl=64 =230 64 192.168.2.1: icmp_seq=2 ttl=64 =251 64 192.168.2.1: icmp_seq=19 ttl=64 =164 --- 192.168.2.1 ping --- 20, 20, 0% Round-Trip / / /mdev = 0.157/0.216/0.280/0.039 --------------------------------------------------------------------------- ping 192.168.2.2,192.168.2.6 arp arp:command not found telnet ssh (192.168.2.5) 192.168.2.2,192.168.2.6 192.168.2.2 3
2 OPNET OPNET 2.1 OPNET OPNET 1 2 4
3 response time Response 5
3 3.1 LAN LAN ResponseTime 4 LAN 6
3.2 DatBbase FTP E-mail HTTP DatBbase FTP E-mail HTTP Response Time Response Time Response Time 5 7
3.3 Response Time 6 DataBase 7 HTTP 8
8 E-mail 9 FTP HTTP HTTP 9
3.4 Response Time 10 HTTP Response Time HTTP HTTP 10
10 HTTP Response Time HTTP 3.5 HTTP 11
4 4.1 1, 1. TCP/IP(Transmission Control Protocol/Internet Protocol) UNIX OSI IP 3 ( ) TCP 4 ( ) HTTP FTP 2. 3.,,,, ARPANET 4. Ethernet LAN 1 ( ) 2 5. LAN(Local Area Network) Local Area Network,,, LAN LAN LAN 12
6. WWW(World Wide Web) HTML,, ( ) 7. (intranet) (Intranet) 8. DNS(Domain Name System) IP DNS IP, DNS, 13 9.,, FAX, ISDN ISDN TA 10. telnet TCP/IP,, Telnet Telnet, 11., 13
4.2 2 OSI (OSI layer model), OSI 7 7 1 ( ) 1 2 ( ), 3 ( ), ( ) 4 ( ), 5 ( ) ( ) 6 ( ) 7 ( ) 14
4.3 3 URL URL 1. URL 2. www.,,, IP 3. IP 18.23.0.24 4. 18.23.0.24 80 TCP 5. GET// 6. HTML 7. TCP 8. html 9. html PC 4.4 4 SMTP(Simple Mail Transfer Protocol) POP(Post Office Protocol) 2 SMTP ASCII Telnet POP TCP/IP POP PC PC SMTP POP 15
4.5 5 UNIX ping, route, traceroute, arp, ipconfig, netstat, ifconfig, nslookup ping ping IP ICMP ping route IP OS traceroute traceroute Windows tracert ping arp ARP IP MAC ARP MAC ARP IP MAC ARP 20 Windows OS 2 ipconfig ipconfig, TCP/IP ipconfig IP ipconfig TCP/IP MAC ( Media Access Control ) iconfig DHCP / TCP/IP IP DHCP IP 16
netstat netstat IP TCP UDP. ifconfig ifconfig UNIX OS Linux NIC IP. nslookup DNS / A /NS /MX / DNS DNS DNS 17
4.6 6 ID 4.7 7 OPNET [ ] 18
4.8 8 IP IP IP 32 PC. IP A C 3 A B C A B C IP A 1.x.x.x 126.x.x.x 255.0.0.0 IP B 128.1.x.x 191.254.x.x 255.255.0.0 IP C 192.0.1.x 223.255.254.x 255.255.255.0 IP TCP/IP IP MAC IP MAC (b) IP IP 32 IP AND 19
IP A C IP A IP X X IP C X C C C Z X IP Z Z IP IP Z V V IP IP IP 4.9 9 PC LAN LAN LAN OSI OSI LAN LAN 1 LAN LAN 10BASE-T LAN LAN 2 LAN CSMA/CA LAN LAN CSMA/CD LAN MAC LLC OSI LAN LAN 6 5 4 3 2 CSMA/CA CSMA/CD 1 10BASE-T 2: OSI 20
4.10 10 WAN LAN WAN LAN WAN LAN WAN 5 + + + 2006 2003 6 21