TCP_IP详解卷1：协议

1 1.1 T C P / I P T C P / I P 6 0 9 0 ( I n t e r n e t ) WA N 1 0 0 T C P / I P T C P / I P [ Lynch 1993] 1.2 Telnet FTP e-mail T C P / I P TCP UDP T C P / I P IP ICMP IGMP 1 - 1 1) 1-1 TCP/IP 2) T C P / I P I P I C M P I n t e r n e t I G M P I n t e r n e t 3 ) T C P / I P T C P U D P T C P U D P 4 ) T C P / I P 2 TCP/IP 1 • Telnet • FTP • SMTP • SNMP L A N F T P 1 - 2 FTP FTP FTP TCP IP 1-2 FTP F T P F T P Te l n e t T C P I P 1 - 2 U N I X 1 - 2 1 - 2 F T P T C P I P T C P / I P T C P / I P T C P I P I n t e r n e t (Internet Protocol Suite) F T P Te l n e t 1 3 8 0 9 0 ( i n t e r n e t ) F D D I I P IP Router ( R o u t e r ) g a t e w a y T C P / I P TCP/IPIBM SNA 1 - 3 1 - 3 E n d s y s t e m Intermediate system En d - t o - e n d Ho p - b y - h o p FTP FTP ......