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Network Protocol Suite Directory and Index 

Network communication is defined by network  protocols. A network protocol is a formal set of rules, conventions and data structure that governs how computers exchange information over a network. In other words, network protocol is a standard procedure and format that two data communication devices must understand, accept and use to be able to talk to each other.

Network protocols are defined by many standard organizations worldwide and technology vendors over years of technology evolution and developments.  In the following directory, we organize the network protocols according to their key functions, or their origin/sponsors - we call it protocol family and protocol suite. One of the most famous network protocol family is TCP/IP suite, which is the technical foundation of the Internet.

To find a network protocol according to the Alphanumeric order of the protocol name, Click here now.

Network Protocol Map

To get this Network Protocol Poster, click here. 

To download an easy to use protocol analyzer and network sniffing tool, click here.

To find network and telecom terms other than protocols, click here (netpedia).

To contribute a protocol definition or network term article and get a free Network Protocol Map, Click here.


Protocol Family and Suite

TCP/IP      Security/VPN       VOIP       LAN     MAN        WAN          SAN      ISO     SS7/C7    Mobile/Wireless

Cisco      IBM      Microsoft      Novell        Apple        HP/DEC      Sun      Others

Most Popular Protocols

IP   TCP   UDP   IPsec   HTTP   POP3   SNMP   MPLS 

SMTP    DNS 

Protocol Suites Protocols
TCP/IP Protocols

Application Layer

BOOTP: Bootstrap Protocol
DCAP: Data Link Switching Client Access Protocol

  

DHCP: Dynamic Host Configuration Protocol 

  

DNS: Domain Name Systems

  

FTP: File Transfer Protocol

  

Finger: User Information Protocol

  

HTTP: Hypertext Transfer Protocol

  

HTTPS: Secure Hypertext Transfer Protocol (S-HTTP)

 

IMAP & IMAP4: Internet Message Access Protocol (IMAP version 4)

 

IMPPpre: Instant Messaging and Presence Protocol

 

IPDC: IP Device Control

   

IRCP (IRC): Internet Relay Chat Protocol

LDAP: Lightweighted Directory Access Protocol

MIME: Multipurpose Internet Mail Extensions

NAT: Network Address Translation

 

NNTP: Network News Transfer Protocol

 

NTP: Network Time Protocol

 

POP & POP3: Post Office Protocol (version 3)

RLOGIN: Remote Login in Unix 

RMON: Remote Monitoring MIBs in SNMP

 

SLP: Service Location Protocol

S/MIME: Secure Multipurpose Internet Mail Extensions

 

SMTP: Simple Mail Transfer Protocol

 

SNMP: Simple Network Management Protocol

SNTP: Simple Network Time Protocol

 

TELNET: TCP/IP Terminal emulation  Protocol

 

TFTP: Trivial File Transfer Protocol

 

URL: Uniform Resource Locator

 

WCCP: Web  Cache Coordination Protocol
Whois (and RWhois): Directory Access Protocol

 

X-Window: X Window Systems Protocol for UNIX Display

 Presentation Layer

LPP: Lightweight Presentation Protocol

 Session Layer

NBSS: NetBIOS Session Service over TCP/IP
RPC: Remote Procedure Call protocol

 Transport Layer 

ITOT: ISO Transport Over TCP/IP
RDP: Reliable Data Protocol

RUDP: Reliable UDP

 

TALI: Transport Adapter Layer Interface

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TCP: Transmission Control Protocol

UDP: User Datagram Protocol

Van Jacobson: Compressed TCP

 Network Layer     

 

Routing Protocols

IP: Internet Protocol

 

IPv6: Internet Protocol version 6

 

ICMP/ICMPv6: Internet Control Message Protocol

 

IRDP: ICMP Router Discovery Protocol

 

BGP/BGP4: Border Gateway Protocol

 

EGP: Exterior Gateway Protocol

 

NARP: NBMA Address Resolution Protocol

 

NHRP: Next Hop Resolution Protocol

 

OSPF: Open Shortest Path First

 

RIP (RIP2): Routing Information Protocol

 

RIPng: RIP for IPv6

 

RSVP: Resource ReSerVation Protocol

 

VRRP: Virtual Router Redundancy Protocol

Multicast Protocols

BGMP: Border Gateway Multicast Protocol

 

DVMRP: distance Vector Multicast Routing Protocol

 

IGMP: Internet Group Management protocol

 

MARS: Multicast Address Resolution Server

 

MBGP: Multiprotocol BGP

 

MOSPF: Multicast OSPF

 

MSDP: Multicast Source Discovery Protocol

MZAP: Multicast-Scope Zone Announcement Protocol
PGM: Pragmatic General Multicast Protocol

 

PIM-DM: Protocol Independent Multicast - Dense Mode

 

PIM-SM: Protocol Independent Multicast - Sparse Mode

MPLS

MPLS: Multi-Protocol Label Switching 

 

CR-LDP:  Constraint-Based Label Distribution Protocol

 

LDP: Label Distribution Protocol

 

RSVP-TE: Resource ReSerVation Protocol-Traffic Engineering

 

 

 Data Link Layer

ARP: Address Resolution Protocol

 

IARP: Inverse Address Resolution Protocol
IPCP & IPv6CP: IP Control Protocol and IPv6 Control Protocol

RARP: Reverse Address Resolution Protocol

 

SLIP: Serial Line IP
 Security/VPN  

AAA

Authentication

Authorization

Accounting

 
Kerberos: Network Authentication Protocol
RADIUS: Remote Authentication Dial In User Service
SSH: Secure Shell Protocol

 Tunneling

L2F: Level 2 Forwarding protocol

 

L2TP: Layer 2 Tunneling Protocol

 

PPTP: Point to Point Tunneling Protocol

Secured Routing

DiffServ: Differenciated Service 

GRE: Generic Routing Encapsulation

 

IPsec: Security Architecture for IP network

 

ISAKMP: Internet Security Association and Key Management Protocol 

IKE: Internet Key Exchange Protocol

AH: Authentication Header

ESP: Encapsulating Security Payload

TLS: Transport Layer Security Protocol

 Others

Socks: Protocol for sessions traversal across firewall securely
VOIP  

Signaling

H.323: Packet-based multimedia communications (VoIP) architecture

H.225:  Call Signaling and RAS in H.323 VOIP Architecture

H.235: Security for H.323 based systems and communications

H.245: Control Protocol for Multimedia Communication

T.120: Multipoint Data Conferencing Protocol Suite

Megaco / H.248: Media Gateway Control protocol

MGCP: Media Gateway Control Protocol 

SIP: Session Initiation Protocol

SDP: Session Description Protocol

 

SAP: Session Announcement Protocol

SCCP: Skinny Client Control Protocol

Media

RTP: Real Time Transport Protocol

RTCP: RTP Control Protocol

Codec

G.7xx: Audio (Voice) Compression Protocols (G.711, G.721, G.722, G.723, G.726, G.727. G.728, G.729)

H.261: Video Coding and Decoding (CODEC)

H.263: Video Coding and Decoding (CODEC)

 Others

COPS: Common Open Policy Service

 

RTSP: Real Time Streaming Protocol

 

SCTP: Stream Control Transmission Protocol

 

TRIP: Telephony Routing Over IP
   

LAN

Local Area Network

 

Ethernet

Ethernet LAN protocols as defined in IEEE 802.3 suite
Fast  Ethernet: Ethernet LAN at data rate 100Mbps (IEEE 802.3u)
Gigabit Ethernet: Ethernet at data rate 1000Mbps (IEEE 802.3z, 802.3ab)
10Gigabit Ethernet: Ethernet at data rate 10 Gbps (IEEE 802.3ae)

WLAN

Wireless LAN in IEEE 802.11, 802,11a, 802.11b, 802.11g
  802.1X: WLAN Authentication & Key Management
  VLAN 802.1Q: Virtual LAN Bridging Switching Protocol
GARP: Generic Attribute Registration Protocol (802.1P)
GMRP: GARP Multicast Registration Protocol (802.1P)
GVRP: GARP VLAN Registration Protocol (802.1P, 802.1Q)
VTP: VLAN Trunking Protocol
 Token Ring Token Ring: IEEE 802.5 LAN protocol
 FDDI FDDI: Fiber Distributed Data Interface

 Others

LLC: Logic Link Control (IEEE 802.2)
SNAP: SubNetwork Access Protocol
STP: Spanning Tree Protocol (IEEE 802.1D)
IEEE 802.1p: LAN Layer 2 QoS/CoS Protocol 

MAN

Metropolitan Area Network

DQDB: Distributed Queue Dual Bus Defined in IEEE 802.6
Ethernet at data rate 10 Gbps (IEEE 802.3ae)
SMDS: Switched Multimegabit Data Service 

WAN

Wide Area Network

ATM ATM: Asynchronous Transfer Mode
  AAL: ATM Adaptation Layer
  AAL0 - AAL5: ATM Adaptation Layer Type 0-5 reserved for variable bit rate video transfer.
  LANE-NNI: LAN Emulation - Network to Network Interface
  LANE-UNI: LAN Emulation - User to Network Interface
  MPOA: Multi Protocol Over ATM
  PNNI: Private Network-to-Network Interface
  Q.2931: ATM Signaling UNI
  SONET: Synchronous Optical Network
Broadband Access DOCSIS: Data Over Cable Service Interface Specification
BISDN: Broadband Integrated Services Digital Network
  ISDN: Integrated Services Digital Network
  Q.931: ISDN network layer interface protocol
  LAPD: ISDN Link Access Protocol Channel D (Q.921)
  xDSL: Digital Subscriber Line Technologies (DSL, IDSL, ADSL, HDSL, SDSL, VDSL, G.Lite)
 Frame Relay Frame Relay: WAN protocol for internetworking at layer 2
LAPF: Link Access Procedure/Protocol (ITU Q.922)
 PPP PPP: Point to Point Protocol
BAP: PPP Bandwidth Allocation Protocol
BACP: PPP Bandwidth Allocation Control Protocol
BCP: PPP Bridging Control Protocol
CHAP: Challenge Handshake Authentication Protocol
EAP: PPP Extensible Authentication Protocol
  LCP: PPP Link Control Protocol
MultiPPP: MultiLink PPP (MP)
NCP: Network Control Protocols
PAP: Password Authentication Protocol
PPPoE: PPP over Ethernet
PPPoA: PPP over ATM AAL5
 X.25 HDLC:  High Level Data Link Control protocol
LAPB: Link Access Procedure Balanced for x.25
X.25: ITU-T WAN  communication protocol
X.75: Signaling system used to connect packet switched networks (X.25).
Other SDLC: Synchronous Data Link Control protocol

SAN

Storage Area Network 

FCIP: Entire Fibre Channel Frame Over IP
FCP: Fibre Channel Protocol
iFCP: Internet Fibre Channel Protocol
iSCSI: Internet Small Computer System Interface
iSNS: Internet Storage Name Service
SAS: Serial Attached SCSI
SCSI: Small Computer System Interface
ISO Protocols
Application ACSE: Association Control Service Element
CMIP: Common  Management Information  Protocol
CMIS: Common  Management Information  Service
CMOT: CMIP over TCP/IP
FTAM: File Transfer Access and Management 
ROSE: Remote Operation Service Element
RTSE: Reliable Transfer Service Element Protocol
VTP: ISO Virtual Terminal Protocol 
X.400: Message Handling Service (ISO email transmission service) Protocols
X.500: Directory Access Service Protocol (DAP)
Presentation Layer ISO-PP: OSI Presentation Layer Protocol
Session Layer ISO-SP: OSI Session Layer Protocol
Transport Layer ISO-TP: OSI Transport Protocols: TP0, TP1, TP2, TP3, TP4
Network Layer ISO-IP: CLNP: Connectionless Network Protocol
CONP: Connection-Oriented Network Protocol
ES-IS: End System to Intermediate System Routing Exchange protocol
IDRP: Inter-Domain Routing Protocol
IS-IS: Intermediate System to Intermediate System
Data Link HDLC:  High Level Data Link Control protocol
LAPB: Link Access Procedure Balanced for X.25
Cisco
Network/Routing CGMP: Cisco Group Management Protocol
  EIGRP: Enhanced Interior Gateway Routing Protocol
  IGRP: Interior Gateway Routing Protocol
  HSRP: Hot Standby Routing Protocol
  RGMP: Cisco Router Port Group Management Protocol
 Data Link CDP: Cisco Discovery Protocol
DISL: Dynamic Inter-Switch Link Protocol
DTP: Dynamic Trunk Protocol
ISL: Inter-Switch Link Protocol
  VTP: VLAN Trunking Protocol
 Security/VPN L2F: Layer 2 Forwarding Protocol
TACACS: Terminal Access Controller Access Control System
 Other
  SCCP: Skinny Client Control Protocol
XOT: X.25 Over TCP
Novell NetWare
IPX: Novell Internetwork Packet Exchange
NCP: NetWare Core Protocol
NDS: NetWare Directory Service
NetWare: Novell Network Operating System (NOS)
NLSP: NetWare Link State Protocol
SAP: Service Access Point
SPX: Sequenced Packet Exchange
IBM SNA

Application

SMB: Server Message Block protocol

Presentation

APPC: Advanced Program to Program  Communication (LU 6.2)

LU: Logic Units - LU 0, LU 1, LU2, LU 3 LU 6.2

Session

NetBIOS: Network Basic Input Output System

Transport

NetBEUI: NetBIOS Extended User Interface

Network

NAU: Network Addressible Units

APPN: Advanced Peer to Peer Networking 

Data Link

DLSw: Data Link Switching protocol
QLLC: Qualified Logic Link Control for SNA over X.25
SDLC: Synchronous Data Link Control protocol
Apple AppleTalk

Application

AppleShare: for platform sharing of a variety of user computers

Presentation

AFP: AppleTalk Filing Protocol

Session

ADSP: Appletalk Data Stream Protocol

ASP: AppleTalk Session Protocol

PAP: Printer Access Protocol

ZIP: Zone Information Protocol

Transportation

AEP: AppleTalk Echo Protocol

ATP: AppleTalk Transaction Protocol

NBP: Name Binding Protocol

RTMP: Routing Table Maintenance Protocol

Network

DDP: Datagram Delivery Protocol

Data Link

AARP: AppleTalk Address Resolution Protocol
LLAP: LocalTalk Link Access Protocol
EtherTalk: AppleTalk Ethernet interface
TokenTalk: AppleTalk Token Ring interface 
Microsoft CIFS: Common Internet File System
SOAP: Simple Object Access Protocol
HP (Include DEC)
DECnet

Application

NICE: Network Information and Control Exchange protocol

Presentation

CTERM: Command Terminal

DAP: Data Access Protocol

Session

SCP: Session Control Protocol

Transportation

NSP: Network Service Protocol

Network

DRP: DECnet Routing Protocol

Data Link

MOP: Maintenance Operation Protocol
DDCMP: Digital Data Communications Message Protocol
SUN RPC: Remote Procedure Call protocol
SS7 / C7 Telephony Signalling protocols
ASP: Application Service Part
BICC: Bearer Independent Call Control protocol
BISUP: B-ISDN User Part
DUP: Data User Part
ISUP: ISDN User Part
MAP: Mobile Application Part
MTP: Message Transfer Part level 2 and 3
SCCP: Signalling Connection Control Part
TCAP: Transaction Capabilities Application Part
TUP: Telephone User Part
Mobile/Wireless WAP: Wireless Application Protocol
Others
 
  FANP: Flow Attribute Notification Protocol
  Xerox: IDP: Internet Datagram Protocol

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