OSI /LAYER

OSI LAYERS

7 Application    HTTP, SMTP, SNMP, FTP, Telnet, SIP, SSH and Scp, NFS, RTSP, Feed, Webcal, XMPP, Whois, AppleTalk, Print Services

6 Presentation   XDR, ASN.1, SMB, AFP, NCP

5 Session         TLS, SSH, ISO 8327 / CCITT X.225, RPC, NetBIOS, ASP, Winsock, BSD sockets

4 Transport       TCP, UDP, RTP, SCTP, SPX, ATP

3 Network          IP, ICMP, IGMP, BGP, OSPF, RIP, IGRP, EIGRP, ARP, RARP, X.25

2 Data Link        Ethernet, Token ring, HDLC, Frame relay, ISDN, ATM, 802.11 WiFi, FDDI, PPP

1 Physical         wire, radio, fiber optic, Carrier pigeon

TCP Layers

4 Application     (OSI layers5 through 7)  HTTP, FTP, DNS

(Routing protocols like BGP and RIP, which for a variety of reasons run over TCP and UDP respectively, may also be considered part of the Internetwork layer)

3 Transport       (OSI layers4 and 5)        TCP, UDP, RTP, SCTP

(Routing protocols like OSPF, which run over IP, may also be considered part of the Internetwork layer)

2 Internetwork    (OSI layer 3)                  For TCP/IP this is the Internet Protocol (IP)

(Required protocols like ICMP and IGMP run over IP, but may still be considered part of the Internetwork layer; ARP does not run over IP)

1 Link                (OSI layers 1 and 2)       Ethernet, Wi-Fi, MPLS, etc.