OSI 7 Layer 개념도

OSI MODEL, LAYERS & PROTOCOLS

 

 

7 Application   

Web Browser, Email, Print Serivces,  SIP, SSH and SCP, NFS, RTSP, Feed, XMPP, Whois, SMB; DNS; FTP; TFTP; BOOTP; SNMP;RLOGIN; SMTP; MIME; NFS; FINGER; TELNET; NCP; APPC; AFP; SMB

 

6 Presentation        

XDR, ASN.1, SMB, AFP, NCP, MIDI, HTML, GIF, TIFF, JPEG, ASCII,

EBCDIC

5 Session    

TLS, SSH, X.225, RPC, NetBIOS, ASP, Winsock, BSD

 

4 Transport 

TCP, UDP, RTP, SCTP, SPX, ATP

Gateway, Advanced Cable Tester, Brouter  

3 Network    

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

Brouter, Router, Frame Relay Device, ATM Switch, Advanced Cable Tester, DDP

2 Data Link  

Ethernet, Token ring, StarLAN, HDLC, Frame relay, ISDN, ATM, 802.11 WiFi, FDDI, PPP, Bridge, Switch, ISDN Router, Intelligent Hub, NIC, Advanced Cable Tester, ARCNET, LocalTalk, FDDI, ATM. NIC Drivers: Open Datalink Interface (ODI), Network Independent Interface Specification (NDIS)

1 Physical    

NIC, Twisted Pair, Coax, Fiber Optic, Wireless Media, Repeater, Multiplexer, Hubs, (Passive/Active), TDR, Oscilloscope, Amplifier, 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.