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| 作者：不明 来源：www.pccode.net 整理 发布时间：2007-1-24 15:24:23 发布人：wongrs | |||
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Access list 1-99 IP standard 100-199 IP extended 200-299 Protocol type code 300-399 DECnet access list 400-499 XNS Standard Access 500-599 XNS Extended Access 600-699 AppleTalk 700-799 48 bit MAC address 800-899 IPX 900-999 IPX Extended 1000-1099 IPX SAP 1100-1199 Extended 48 bit MAC address 1200-1299 IPX summary address Port numbers TCP=6 UDP=17 FTP=21 TELNET=23 SMTP=25 DNS=53 TFTP=69 SNMP=161 NOVEL IPX Frame Type Interface Novell Frame Type Cisco Keyword Ethernet Ethernet 802.3 and NetWare 3.11 Novell Ether IPX Ethernet Encapsulation Ethernet 802.2 and NetWare 3.12 SAP Ethernet II ARPA, DECnet and supports TCP/IP, IPX and upper layers Ethernet SNAP SNAP, AppleTalk, IPX, and TCP/IP Token Ring Token Ring 802. SAP Token Ring_SNAP SNAP FDDI FDDI SNAP SNAP FDDI 802.2 SAP FDDI RAW NOVELL-FDDI DOD model IP DOD Protocol Application, Presentation, Session Process Application Telnet, FTP, LPD, SNMP, TFTP, SMTP, NFS, X WINDOW Transport Host to Host TCP, UDP Network Internet ICMP, BOOTP, ARP, RARP, IP Data Link Network Access Ethernet, Fast Ethernet, Token Ring, FDDI IPX Protocl Stack: Application, Presentation, Session ?/span> RIP, SAP, NCP, NLSP, etc… Transport ?/span> IPX, SPX Network ?/span> IPX Data link ?/span> ODL Open Data Link Physical ?/span> whatever OSI Model: Transport is TCP Segments Network is IP Packets/Datagrams Data Link is Ethernet frames Physical is Bits The five steps to Encapsulation: 1. Build the data 2. Package data for end-to-end transport (Segments transport subsystem) 3. Append network address in header (data is put into a packet or datagram) Network 4. Append local address in data link header (must be put into a frame or packet) Data 5. Convert to bits for transmission 1 and 0 Physical Data > Segment > Packet > Frame > Bits Data Encapsulation Method 1. User information is converted to data for transmissi
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