9-1 / (TCP/IP) TCP/IP TCP/IP ( ) ICMP ARP RARP 9.1 TCP/IP 9.1.1 TCP/IP OSI TCP/IP (DARPA) DARPA TCP/IP UNIX Berkeley Software DistributionTCP/IP TCP/IP TCP/IP TCP/IP TCP/IP TCP/IP OSI - TCP/IP ( ) ( ) ( ) / TCP/IP LAN WAN TCP/IP 3 4 (IP TCP)
9-2 9.1.2TCP/IP DNS ( ) WINS (Windows ) Microsoft Microsoft Windows NT NT
9-3 HOSTS IP POP3 ( ) SMTP ( ) SNMP ( ) FTP ( ) TCP FTP ASCII TFTP ( ) UDP TFTP LAN FTP HTTP ( ) (World Wide Web) - Telnet Telnet PING (Packet Internet Groper) / Traceroute PINGtraceroute PING Traceroute Windows NBTSTAT -- NetBIOS NETSTAT -- TCP/IP ICMPTCP UDP TCP/IP ipconfig/winipcfg -- ip (nic) MAC IP
9-4
9-5 9.1.3TCP/IP - TCP -- TCP TCP UDP -- UDP UDP
9-6 9.1.4TCP UDP TCP -- -- -- -- TCP HLEN -- 32 -- 0 -- ( ) -- -- -- -- TCP -- UDP UDP UDP UDP TFTP SNMP (NFS) (DNS)
9-7 9.1.5TCP UDP TCP UDP (socket) RFC1700 FTP 21 TCP - TCP UDP 255 255-1023 1023 1023
9-8 9.1.6TCP / TCP (ISN) TCP ISN SYN ( SYN SYN) ISN ISN ISN (ACK) A ->B SYN -- X A <- B ACK -- X A <- B SYN -- Y A ->B ACK -- Y
9-9 / / TCP ISN SYN SYN SYN TCP ( ) 9.1.7TCP TCP TCP TCP TCP 1 1 TCP TCP TCP
9-10 TCP TCP TCP
9-11 9.2 9.2.1TCP/IP TCP/IP OSI OSI TCP/IP IP -- ICMP -- ARP -- IP RARP --
9-12 9.2.2 IP IP IP IP (MAC) MAC IP VER -- HLEN -- 32 -- -- (+ ) -- MTU TTL -- Time To Live ( ) -- ( ) -- IP IP -- 32 IP IP -- IP IP TCP IP IP IP
9-13 9.2.3 (ICMP) TCP/IP ICMPICMP IP ICMP
9-14 ICMP ICMP ping ICMP -
9-15 9.2.4ARP PowerPoint (Microsoft PowerPoint 2000, 342KB) PowerPoint (ARP) Internet Explorer PowerPoint
9-16 ARP IP MAC MAC ARP ARP ARP ARP ARP ARP XYZ MAC
9-17 TCP/IP OSI ( ) TCP/IP OSI ICMP ICMP TCP/IP ARP IP MAC RARP RARP
9-18 9.2.4.1 Show ARP clear ARP 30 show ARP clear ARP ARP MAC IP ARP / roll-over ( ) PC ( HyperTerminal ) HyperTerminal Enable show arp Clear arp Ping roll-over PC PC (Win 9598NT 2000) HyperTerminal roll-over PC 2500 1600 IP IOS IP
9-19 9.2.4.2 ARP 30 ARP XYZ MAC / (5 ) ( ) IP IP 5 PC (.) Windows HyperTerminal 5 Cisco ( 1600 2500 IOS 11.2 ) 4 (10BASE-T4 8 ) 1 (Cisco Catalyst 1900 ) 5 (RJ-45 DB9 ) 3 V.35 WAN (DTE / DCE ) CAT5 AUI (DB15) RJ-45 ( AUI ) AUI 10BASE-T RJ-45 2500 1600
9-20 IP IOS 1 - MAC (5 ) ARP MAC ARP MAC IP MAC 1. MAC LAB-A, E0 LAB-A, E1 LAB-B, E0
9-21 LAB-C, E0 LAB-D, E0 LAB-E, E0 2 - ping show arp 2. MAC