TCP/IP Protocol Suite

TCP/IP is the protocol suite used by the internet and includes many protocols.

Network Access

Application

Transport

Internet

ARP. Address Resolution Protocol. Provides dynamic address mapping between an IPv4 address and a hardware address.

Ethernet. Defines the rules for wiring and signaling standards of the network access layer.

IPv4

OSPF

TCP

UDP

DNS

HTTP

DHCP

SMTP

FTP

Dynamic Host Configuration Protocol .
server dynamically assigns IPv4 address

HyperText Transfer Protocol. A set of rules for exchanging text, graphic images, sound, video, and other multimedia files on the World Wide Web.

File Transfer Protocol

Domain Name System. Translates domain names such as cisco.com, into IP addresses

Simple Mail Transfer Protocol. Enables clients to send email to a mail server and enables servers to send email to other servers.

Transmission Control Protocol. Enables reliable communication between processes running on separate hosts and provides reliable, acknowledged transmissions that confirm successful delivery.

User Datagram Protocol. Enables a process running on one host to send packets to a process running on another host. However, UDP does not confirm successful datagram transmission.

Internet Protocol version 4. Receives message segments from the transport layer, packages messages into packets, and addresses packets for end-to-end delivery over a network. IPv4 uses a 32-bit address.

Open Shortest Path First. Link-state routing protocol that uses a hierarchical design based on areas. OSPF is an open standard interior routing protocol.