OSI Model (OSI/RM) Study Sheet
TCP/IP Stack OSI Model (OSI/RM)
References to
James Bond Meets The 7 Layer OSI Model
are italicized
Protocols & Hardware

TCP/IP stack layer 4
Application

Maps to OSI model layer 7 Application, OSI model layer 6 Presentation & OSI model layer 5 Session

OSI model layer 7
Application

Bond receives message from No. 1

FTP (21), Telnet (23), SMTP (25), DNS (53), DHCP (67, 68), HTTP (80), POP3 (110), NNTP (119), NTP (123), SMB, TFTP, SNMP, BOOTP

OSI model layer 6
Presentation

Message translated,
compressed & encrypted


SSL (443), TLS

OSI model layer 5
Session

Security checks for
message completeness

TCP/IP stack layer 3
Transport

Maps to OSI model layer 4 Transport

OSI model layer 4
Transport

Message broken into smaller packages, combined with others

TCP, UDP
Layer 4 Switch

TCP/IP stack layer 2
Internet

Maps to OSI model layer 3 Network

OSI model layer 3
Network

Bond advised on fastest route

IP, ICMP, EGMP, ARP, RARP
RIP, OSPF, IGRP, EIGRP, EGP, BGP
Router, Layer 3 Switch

TCP/IP stack layer 1
Network Access

Maps to OSI model layer 2 Data Link
& OSI model layer 1 Physical

OSI model layer 2
Data Link

(divided into LLC [top]
& MAC [bottom])
Messages placed in special pouch

IEEE 802.3 Ethernet, IEEE 802.11, X.25, Frame Relay, FDDI, ATM
Modem, NIC, Switch

OSI model layer 1
Physical

Bond gets into his Aston Martin

Cable, Repeater, Patch Panel
 

"All People Seem To Need Data Processing"

"Please Do Not Throw Sausage Pizza Away"

TCP/IP protocols in green (port numbers in parentheses)
Routing protocols in gray highlight
LAN & WAN infrastructure protocols in blue highlight
Hardware in underlined hyperlink; click for images

© 2002–2015, Jeff Zahorowski. All rights reserved

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