Major Protocols in the TCP/IP Suite
By Stephen Bucaro
This is a chart of the layers of the TCP/IP Suite and the major protocols in each layer.
This is not a comprehensive list.
- File Transfer Protocol is for transfering and manipulating files.
- Simple Mail Transfer Protocol is for sending messages to a mail server for relaying.
- Post Office Protocol version 3 is for retrieving e-mail from a remote server.
- Telecommunication Network Protocol is for creating a command-line interface on a remote machine.
- Simple Network Management Protocol is used for network management systems.
- Dynamic Host Configuration Protocol automates the assignment of IP addresses, subnet masks, default gateway, and other IP parameters.
- Domain Name System translates human meaningful domain names to IP addresses.
- Hypertext Transfer Protocol is for a user agent such a web browser to retrieve a hypertext document from a server.
- Internet Message Access Protocol is for retrieving e-mail from a remote server.
- Transmission Control Protocol works with IP to send a large chunk of data across the Internet by breaking the data into pieces called packets.
TCP requests retransmission of lost packets, and reassembles out-of-order packets before it passes that datagram to the application program.
- User Datagram Protocol works with IP to send a large chunk of data across the Internet by breaking the data into pieces called packets.
Unlike TCP, UDP does not check for lost lost packets or reassembles out-of-order packets. UDP provides an unreliable transmission service
for time-sensitive applications.
Internet Protocol delivers packets from the source host to the destination host based on their addresses. Forwarding decisions across IP
connected networks is typically performed by routers. IP does not check for lost lost packets and so is used with TCP to achieve reliability.
Internet Control Message Protocol is used to generate messages in response to errors for instance that a requested service is not available
or that a host or router could not be reached.
Address Resolution Protocol is for finding a host's hardware address when only its IP address is known. It's primarily used to translate IP
addresses to Ethernet MAC addresses.
Reverse Address Resolution Protocol is for finding a host's IP address when only it's MAC address (hardware address) address is known. RARP
requires an administrator to maintain a database a database of mappings from IP addresses to MAC addresses on a server.
Open Shortest Path First is a routing protocol where each OSPF router collects link state information to construct the entire network topology
from which it computes the shortest path for each route.
- Media Access Control is the physical address, a unique serial number assigned to each network adapter.
More Networking Protocols and Standards:
• WAN Network Protocols - DSL, SONET, HDLC, DWDM, DLSW+
• Session Border Controllers - More Than Just a Voice Firewall
• Understanding IP Routing
• The TCP/IP protocol Datagram Format
• Comparison of the Layers of the OSI and TCP/IP Models
• Networking and Internet Standards Organizations
• RADIUS Protocol
• TCP/IP Utilities
• What is PPP, PPPoA and PPPoE?