This is an incomplete list of network protocols, categorized by their nearest OSI model layers. Many of these protocols, however, are originally based on the Internet Protocol Suite (TCP/IP) and other models and often do not fit neatly into OSI layers.
| OSI Model | |
|---|---|
| 7 | Application Layer |
| 6 | Presentation Layer |
| 5 | Session Layer |
| 4 | Transport Layer |
| 3 | Network Layer |
| 2 | Data Link Layer |
| 1 | Physical Layer |
Layer 1 protocols (Physical Layer)
- ADSL Asymmetric digital subscriber line
- ISDN Integrated Services Digital Network
- PDH Plesiochronous Digital Hierarchy
- RS-232, a serial line interface originally developed to connect modems and computer terminals
- SDH Synchronous Digital Hierarchy
- SONET Synchronous Optical NETworking
- Modem standards/ITU V-Series Protocols used to communicate between analog modems over voice telephone lines.
- Various Ethernet physical layers
- ITU-T G.hn Physical Layer
Layer 2 protocols (Data Link Layer)
- ARCnet Attached Resource Computer NETwork
- CDP Cisco Discovery Protocol
- DCAP Data Link Switching Client Access Protocol
- Dynamic Trunking Protocol
- Econet
- Ethernet
- FDDI Fiber Distributed Data Interface
- Frame Relay
- ITU-T G.hn Data Link Layer
- HDLC High Level Data Link Control
- IEEE 802.11
- IEEE 802.16
- LocalTalk
- L2F Layer 2 Forwarding Protocol
- L2TP Layer 2 Tunneling Protocol
- LAPD Link Access Procedures on the D channel
- LLDP Link Layer Discovery Protocol
- LLDP-MED Link Layer Discovery Protocol - Media Endpoint Discovery
- PPP Point-to-Point Protocol
- PPTP Point-to-Point Tunneling Protocol
- Q.710 Simplified Message Transfer Part
- NDP Neighbor Discovery Protocol
- SLIP Serial Line Internet Protocol (obsolete)
- StarLan
- STP Spanning Tree Protocol
- Token ring
- VTP VLAN Trunking Protocol
Layer 2+3 protocols
- ATM Asynchronous Transfer Mode
- Frame relay, a simplified version of X.25
- MPLS Multi-protocol label switching
- X.25
- ARP Address Resolution Protocol
- RARP Reverse Address Resolution Protocol
Layer 1+2+3 protocols
Layer 3 protocols (Network Layer)
- CLNP Connectionless Networking Protocol
- EGP Exterior Gateway Protocol
- EIGRP Enhanced Interior Gateway Routing Protocol
- ICMP Internet Control Message Protocol
- IGMP Internet Group Management Protocol
- IGRP Interior Gateway Routing Protocol
- IPv4 Internet Protocol version 4
- IPv6 Internet Protocol version 6
- IPSec Internet Protocol Security
- IPX Internetwork Packet Exchange
- SCCP Signalling Connection Control Part
Layer 3 protocols (Network Layer management)
- IS-IS Intermediate system to intermediate system
- OSPF Open Shortest Path First
- BGP Border Gateway Protocol
- RIP Routing Information Protocol
- EIGRP
Layer 3.5 protocols
- HIP Host Identity Protocol
Layer 3+4 protocols
Layer 4 protocols (Transport Layer)
- AHAH Authentication Header over IP or IPSec
- ESPESP Encapsulating Security Payload over IP or IPSec
- GRE Generic Routing Encapsulation for tunneling
- IL Originally developed as transport layer for 9P
- SCTP Stream Control Transmission Protocol
- Sinec H1 for telecontrol
- SPX Sequenced Packet Exchange
- TCP Transmission Control Protocol
- UDP User Datagram Protocol
Layer 5 protocols (Session Layer)
- 9P Distributed file system protocol developed originally as part of Plan 9
- NCP NetWare Core Protocol
- NFS Network File System
- SMB Server Message Block
Layer 7 protocols (Application Layer)
- AFP, Apple Filing Protocol
- BACnet, Building Automation and Control Network protocol
- BitTorrent, A peer-to-peer file sharing protocol
- BOOTP, Bootstrap Protocol
- Diameter, an authentication, authorization and accounting protocol
- DICOM includes a network protocol definition
- DICT, Dictionary protocol
- DNS, Domain Name System
- DHCP, Dynamic Host Configuration Protocol
- ED2K, A peer-to-peer file sharing protocol
- FTP, File Transfer Protocol
- Finger, which gives user profile information
- Gnutella, a peer-to-peer file-swapping protocol
- Gopher, a hierarchical hyperlinkable protocol
- HTTP, HyperText Transfer Protocol
- IMAP, Internet Message Access Protocol
- Internet Relay Chat (IRC)
- ISUP, ISDN User Part
- Jabber, an instant-messaging protocol
- LDAP Lightweight Directory Access Protocol
- MIME, Multipurpose Internet Mail Extensions
- MSNP, Microsoft Notification Protocol (used by Windows Live Messenger)
- MAP, Mobile Application Part
- NetBIOS, Fie Sharing and Name Resolution protocol - the basis of file sharing with Windows.
- NNTP, News Network Transfer Protocol
- NTP, Network Time Protocol
- NTCIP, National Transportation Communications for Intelligent Transportation System Protocol
- POP3 Post Office Protocol Version 3
- RADIUS, an authentication, authorization and accounting protocol
- Rlogin, a UNIX remote login protocol
- rsync, a file transfer protocol for backups, copying and mirroring
- RTP, Real-time Transport Protocol
- RTSP, Real-time Transport Streaming Protocol
- SSH, Secure Shell
- SISNAPI, Siebel Internet Session Network API
- SIP, Session Initiation Protocol, a signaling protocol
- SMTP, Simple Mail Transfer Protocol
- SNMP, Simple Network Management Protocol
- SOAP, Simple Object Access Protocol
- TUP, Telephone User Part
- Telnet, a remote terminal access protocol
- TCAP, Transaction Capabilities Application Part
- TFTP, Trivial File Transfer Protocol, a simple file transfer protocol
- WebDAV, Web Dist Authoring and Versioning
- DSM-CC Digital Storage Media Command and Control
and secure versions of the above (HTTPS, etc.)
Other protocols
- Controller Area Network (CAN)
- Common Industrial Protocol (CIP)
- Digital Command Control (DCC)
- Distributed Systems Architecture (DSAbg) developed by Honeywell Bull
- FIX protocol
- Gateway Discovery Protocol (GDP) is a Cisco protocol similar to IRDP
- ICMP Router Discovery Protocol: Implementation of RFC 1256
- I²C
- List of automation protocols
- modbus
- Systems Network Architecture (SNA) developed by IBM
- SOCKS
- Simple traversal of UDP through Network Address Translators (STUN)
- DECnet protocol family from Digital Equipment Corporation (now HP)
Protocol description languages
- Abstract syntax notation one (ASN.1)
Further reading
- Network Protocols Handbook. Javvin Technologies. 2005. ISBN 9780974094526. http://books.google.com/books?id=D_GrQa2ZcLwC.
External links
- Protocol Encapsulation Chart - A PDF file illustrating the relationship between common protocols and the OSI Reference Model.
This entry is from Wikipedia, the leading user-contributed encyclopedia. It may not have been reviewed by professional editors (see full disclaimer)


