HUT Comms. Lab, Timo O. Korhonen
19
Each OSI-layer has its standardized services
IEEE 802.X, ANSI X3T9.5, SMT,...
V.24, V.35, V.90, 10Base5, 10Base2, 10BaseT, FDDI,
SDH, G.703...
SNA Presentation services
NCP, FTP, Telnet, SMTP, SNMP, LAT, AFP, SMB...
7. Application
6. Presentation
5. Session
4. Transport
3. Network
2. Data Link
1. Physical
NetBIOS, NetBEUI, DNS, ...
SPX, PEP, TCP, UDP, NSP...
IPX, RIP, SAP, IDP, IP, ARP, RARP, ICMP, X.25, RIP...