A B C D E F G H I L M N O P Q R S T U V W X Y Z
AAL0 ATM Adaptation Layer Type 0 refers to raw ATM
AAL1 ATM Adaptation Layer Type 1 supports constant bit rate, time dependent
traffic such as voice and video.
AAL2 ATM Adaptation Layer Type 2 reserved for variable
bit rate video transfer.
AAL3/4 ATM Adaptation Layer Type 3/4 supports variable
bit rate, delay tolerant data traffic requiring some sequencing
and/or error detection support.
AAL5 ATM Adaptation Layer Type 5 supports variable
bit rate, delay tolerant connection oriented data traffic
requiring minimal sequencing or error detection support.
AARP AppleTalk Address Resolution Protocol
ADSP AppleTalk Data Stream Protocol
AEP AppleTalk Echo Protocol
AFP AppleTalk Filing Protocol
ARP/RARP Address Resolution Protocol / Reverse Address
ASP AppleTalk Session Protocol
ATM Asynchronous Transfer Mode
ATP AppleTalk Transaction Protocol
BACP Bandwidth Allocation Control Protocol (PPP suite)
BAP Bandwidth Allocation Protocol (PPP suite)
BCAST Broadcast Protocol (Novell protocols)
BCP Bridging Control Protocol (PPP suite)
BGP4 Border Gateway Protocol (TCP/IP)
BICI BISDN Inter Carrier Interface (ATM PNNI Signaling)
BMP (Burst) Burst Mode Protocol (Novell protocols)
BPDU Bridge Protocol Data Unit
BRE Bridge Relay Encapsulation, proprietary Ascom
Timeplex protocol that extends bridging across WAN links
by means of encapsulation (Frame Relay).
BVCP PPP Banyan VINES Control Protocol (PPP suite)
CCITT International Telegraph and Telephone Consultative
Committee (after the French)
Control Protocol (PPP suite)
Handshake Authentication Protocol (PPP suite)
in Frames (ATM over LAN)
COPS Common Open Policy Service
CTERM Command Terminal (DECnet)
DAP Data Access Protocol (DECnet)
DCAP Data Link Switching Client Access Protocol
DCP Data Compression Protocol over Frame Relay
DCPCP DCP Control Protocol
DDP Datagram Delivery Protocol (AppleTalk)
DECnet Digital Equipment Corporation protocols developed
to communicate between DEC minicomputers.
DHCP Dynamic Host Configuration Protocol (TCP/IP)
DIAG Diagnostic Responder protocol (Novell)
DLSw Data Link Switching (IBM SNA)
DNCP PPP DECnet Phase IV Control Protocol (PPP suite)
DNS Domain Name Server protocol (TCP/IP)
DSMCC Digital Storage Media Command and Control (Audio Visual over ATM)
DVB Digital Video Broadcasting
Control Protocol (PPP suite)
ESIS End system to Intermediate System protocol (ISO
Ethernet LAN protocol synonymous with IEEE 802.3 standard
Attribute Notification Protocol
Distributed Data Interface, standardized by ANSI
FTP File Transfer Protocol (TCP/IP)
UNI (User Network Interface)
GMM GPRS Mobility Management
GSM GPRS Session Management
GSMP General Switch Management Protocol (IP Switching)
GTP GPRS Tunnelling Protocol
HDLC High Level Data Link Control protocol developed by ISO, based on pioneering
work by IBM on SDLC.
HPRAPPN High Performance
Routing Advanced Peer to Peer Network, IBM network architecture
for dynamic routing across arbitrary network topologies.
HTTP Hypertext Transfer Protocol (TCP/IP)
ICMP Internet Control Message Protocol (TCP/IP)
ICMPv6 revision of ICMP (TCP/IP)
ICP Internet Control Protocol (Banyan)
Datagram Protocol (XNS)
Flow Management Protocol (IP Switching)
IGMP Internet Group Management Protocol (TCP/IP)
IGRP Interior Gateway Routing Protocol (TCP/IP)
IISP Interim Interswitch Signalling Protocol (ATM
Local Management Interface, bidirection exchange of management
information between UMEs.
Protocol, routing layer datagram service of the TCP/IP
IPC InterProcess Communications protocol, datagram
and reliable message delivery service for Banyan.
Control Protocol, responsible for configuring the IP parameters
on both ends of the PPP link.
IPv6 revised version of IP (TCP/IP)
IPv6CP IPv6 PPP Control Protocol, responsible for configuring,
enabling and disabling the IPv6 protocol modules on both
ends of a PPP link.
IPX Internetwork Packet Exchange, Novell's implementation
of the Xerox Internet Datagram Protocol (IDP).
IPXCP IPX PPP Control Protocol, choose and configure
the IPX networklayer protocol over PPP.
Services Digital Network, all digital communications line
that allows for transmission of voice, data, video and
graphics, at very high speeds, over standard communication
ISIS (ISO 10589) Intermediate System to Intermediate System, exchage
of configuration and routing information to facilitate
the operation of the routing and relaying functions of
the network layer (ISO).
Standards Organization protocols defined by IEEE; complete
sevenlayer protocol conforming to the OSI networking model.
ISOIP ISO Internetworking Protocol, includes builtin
error signalling to aid in routing management.
Session Protocol, specifies procedures for a single protocol
for the transfer of data and control information from one
session entity to a peer session entity.
ISOTP (ISO 8073) ISO Transport Protocol
User Part of SS7, defines protocol and procedures used
to seup, manage and release trunk circuits that carry voice
and data calls over the public switched telephone network.
ITU Q.2931 Signalling International
Telecommunications Union signalling standard for ATM to
support Switched Virtual Connections. This is the signalling
standard for ISDN.
L2F Layer 2 Forwarding protocol, permits the tunneling of the link layer
of higher layer protocols (PPP suite).
L2TP Layer 2 Tunneling Protocol, used for integrating multiprotocol dialup
services into existing ISP POP.
LAPB Link Access Protocol, Balanced, derived from HDLC and used to carry
LAPD Link Access Protocol, Channel D, layer 2 protocol defined in CCITT.
LAPF Link Access Procedure F (Frame Relay), modified LAPD standard for
LAT Local Area Transport protocol, designed to handle multiplexed terminal
traffic to/from timesharing hosts (DECnet).
LAVC Local Area VAX Cluster protocol, communications between DEC VAX computers
in a cluster (DECnet).
LDAP Lightweight Directory Access Protocol
LCP Link Control Protocol, establishes, configures and tests the data
link connection (PPP suite).
LLC Logical Link Control protocol (IEEE 802.2), provides a link mechanism
for upper layer protocols.
LQR Link Quality Report, specifies the mechanism for link quality monitoring
M2UA used for backhauling of SS7 MTP2-User
signalling messages over IP using Stream Control
Transmission Protocol (SCTP)
M3UA supports transport of SS7 MTP3-User sugnalling
over IP using Stream Control Transmission Protocol
MAPOS Multiple Access Protocol over SONET / SDH
MARS Multicast Address Resolution Server (TCP/IP)
Megaco Media Gateway Control
MLP Multilink Procedure, added upper sublayer of the LAPB, operating between
the packet layer and a multiplicity of single data link
protocol functions (SLPs) in the data link layer (X.25).
MOP Maintenance Operation Protocol, utility services such as uploading
and downloading system software, remote testing and problem
MOUNT protocol used to initiate client access to a server supporting NFS.
MPEG Motion Picture Experts Group, ISO standards group
dealing with video and audio compression.
MPLS Multi Protocol
Label Switching, set of procedures for augmenting network
layer packets with "label stacks", thereby turning
them into labeled packets.
MPOA Multi Protocol Over ATM, deals with efficient transfer of innersubnet
unicast data in a LAN emulation environment.
MPPC Microsoft PointtoPoint Compression Protocol
MTP2 Message Transfer Part, Level 2, signalling link which together with
MTP3 provides reliable transfer of signalling messages
between two directly connected signalling points (SS7).
MTP3 Message Transfer Part, Level 3, connects Q.SAAL to the users (SS7
NBFCP PPP NetBIOS Frames Control Protocol, network
control protocol responsible for establishing and configuring
the NBF protocol over PPP.
NBP AppleTalk Name Binding Protocol, manages the
use of names on AppleTalk networks.
NCP Novell NetWare Core Protocol, manages access
to the primary NetWare server resources.
NDS NetWare Directory Services (Novell), globally
distributed network database that replaces the bindery
used in previous versions of NetWare.
NetRPC NetRemote Procedure Call, used to access VINES
applications such as StreetTalk and VINES Mail (Banyan).
Network File System, file sharing application for the Sun
Layer Header, begins the frame used by RTP nodes.
NHRP NBMA Next Hop Resolution
NSP Network Services Protocol, provides reliable
virtual connection services with flow control to the network
layer Routing Protocol (DECnet).
NTP Network Time Protocol, time synchronization system
for computer clocks through the Internet network (TCP/IP).
OSINLCP OSI Network Layer Control Protocol, responsible
for configuring, enabling and disabling the OSI protocol
modules on both ends of the PPP link.
OSPF Open Shortest Path First, linkstate routing protocol
used for routing IP (TCP/IP).
PAP Printer Access Protocol, manages the virtual
connection to printers and other servers (AppleTalk).
Authentication Protocol, provides a simple method for the
peer to establish its identity using a 2way handshake (PPP
Exchange Protocol, provides a semireliable packet delivery
service that orients towards singlepacket exchanges (XNS).
PIM Protocol Independent MulticastSparse Mode (PIMSM)
Mapper protocol, manages the allocation of transport layer
ports to network server applications (Sun).
PNNI Private NetworktoNetwork Interface, hierarchial,
dynamic linkstate routing protocol (ATM).
POP3 Post Office Protocol version 3, permits workstations
to dynamically access a maildrop on a server host (TCP/IP).
Presentation Protocol, performs context negotiation and
management between open systems.
Protocol, designed for simple links which transport packets
between two peers.
PPP Multilink Multilink PointtoPoint Protocol, permits a system
to indicate to its peer that it is capable of combining
multiple physical links into a "bundle".
PPPBPDU PPP Bridge Protocol Data Unit, used to connect
PPTP PointtoPoint Tunneling Protocol, allows PPP to
be channeled through an IP network (PPP).
Logical Link Control protocol, transfers IBM SNA data over
an X.25 network.
Radio Access Network Application Part is the Radio Netwok
Layer sugnalling protocol for the Iu interface.
RIP Routing Information Protocol, maintains a database of network hosts
and exchange information about the topology of the network
RIP2 Routing Information Protocol, used by Berkeley 4BSD UNIX systems to
exchange routing information. RIP2 derives from the Xerox
protocol of the same name (TCP/IP).
RIPX Routing Information Protocol, used to collect, maintain and exchange
correct routing information among gateways within the Internet
RFC Request for
Comments, a series of notes about the Internet, started
in 1969 (when the Internet was the ARPANET). The notes
discuss many aspects of computing and computer communication
focusing in networking protocols, procedures, programs,
and concepts, but also including meeting notes, opinion,
and sometimes humor. The specification documents of the
Internet protocol suite, as defined by the Internet Engineering
Task Force (IETF) and its steering group (the IESG), are
published as RFCs. Many of the TCP/IP protocols and PPP
protocols are defined by rfc's.
RLOGIN Remote Login, allows UNIX users of one machine
to connect to other UNIX systems across the Internet and
interact as if their terminals are directly connected to
the machines (TCP/IP).
RLP Radio Link Protocol
RM Cells Rate Management cells (ATM cells).
RND name of a company which uses a proprietary protocol header (RND) to
transfer LAN protocols via WAN.
RP Routing Protocol, distributes routing information among DECnet hosts.
RPC Remote Procedure Call protocol, activates a function on a remote station
and retrieves the result (Sun).
RSVP Resource ReSerVation setup Protocol, designed for an integrated services
RTMP Routing Table Maintenance Protocol, manages routing
information for AppleTalk networks.
RTP Routing Update Protocol, used to distribute network topology (Banyan).
SAP Novell's Service Advertising Protocol, provides information about
what servers are available on the network.
SCCP Signalling Connection Control Part, offers enhancements to MTP level
3 to provide connectionless and connectionoriented network
services, as well as to address translation capabilities
SCP Session Control Protocol, manages logical links for DECnet connections.
a routine protocol in the TCP/IP family.
SCTP Stream Control Transmission Protocol
SDCP PPP Serial Data Control Protocol, responsible for configuring, enabling
and disabling the SDTP modules on both ends of the pointtopoint
SDLC Synchronous Data Link Control protocol, developed by IBM to be used
as the layer 2 of the SNA hierarchical network.
SER Serialization packet, ensures that a single version of NetWare is
not being loaded on multiple servers.
SIP SMDS Interface Protocol, threelevel protocol that controls access
to the network.
SLP Servise Location
SMB Server Message Block, Microsoft presentation layer protocol providing
file and print sharing functions for LAN Manager, Banyan
VINES and other networking operating systems.
SMDS Switched Multimegabit Data Service, broadband networking technology
developed by Bellcore.
Message Peer to Peer
SMTP Simple Mail Transfer Protocol, mail service modeled on the FTP file
transfer service (TCP/IP).
SMS Short Message Service (UMTS).
SMS Short Message Service.
SNA Systems Network
Architecture, introduced by IBM to provide a framework
for joining together many mutually incompatible IBM products
for distributed processing.
SNACP SNA PPP Control Protocol, responsible for configuring, enabling and
disabling SNA on both ends of the pointpoint link (PPP).
SNMP Simple Network Management Protocol, developed by the Internet community
to allow diverse network objects to participate in a global
network management architecture.
SPANS Simple Protocol for ATM Network Signalling, developed by FORE Systems
for use in ATM networks.
SPP Sequenced Packet Protocol, provides a reliable virtual connection
service for private connections (Banyan).
SPP Sequenced Packet Protocol, provides reliable transport delivery with
flow control (XNS).
SPX Sequential Packet Exchange, Novell's version of Xerox SPP. It is a
transport layer protocol providing a packet delivery service
for third party applications.
SRB Source Routing Bridging, proprietary header of
Bay Networks which passes Token Ring information over WAN
SRP Spatial Reuse Protocol.
SS7 Signalling System
7, a common channel signalling system.
STP Spanning Tree Protocol, prevents the formation of logical looping
in the network (DECnet).
Adapter Layer Interface
Capabilities Application Part, enables the deployment of
advanced intelligent network services by supporting noncircuit
related information exchange between signalling points
using the SCCP connectionless service (SS7).
TCP Transmission Control Protocol, provides a reliable stream delivery
and virtual connection service to applications through
the use of sequenced acknowledgement with retransmission
of packets when necessary (TCP/IP).
TDP Tag Distribution Protocol, a two party protocol that runs over a connection
oriented transport layer with guaranteed sequential delivery.
TELNET Terminal emulation protocol of TCP/IP.
TFTP Trivial File Transfer Protocol, supports file writing and reading
THDR Transport Layer Header, used by RTP endpoints to provide correct processing
of the packet (SNA).
Timeplex (BRE2) Bridge Relay Encapsulation, proprietary Ascom Timeplex protocol that
extends bridging across WAN links by means of encapsulation
Token Ring LAN
protocol where all stations are connected in a ring and
each station can directly hear transmissions only from
its immediate neighbor.
UDP User Datagram Protocol, provides a simple but unreliable message service
for transactionoriented services (TCP/IP).
UNI User Network Interface, an interface point between ATM end users and
a private ATM switch, or between a private ATM switch and
the public carrier ATM network.
Van Jacobson compressed TCP
protocol which improves the TCP/IP performance over low
speed serial links.
VARP VINES Address Resolution Protocol, used for finding the node Data
Link Control address from the node IP address (Banyan).
VCI Virtual Channel Identifier.
VGCS Voice Group
ViVID MPOA proprietary protocol
of Newbridge which provides bridged LAN Emulation and routed
LAN Emulation functionality.
VPI Virtual Path Identifier
VRRP Virtual Router Redundancy Protocol
WCCP Web Cache Coordination
protocol, provides constant validation of active workstation
connections and notifies the NetWare operating system when
a connection may be terminated as a result of lengthy periods
without communication (Novell).
Wellfleet BOFL Wellfleet Breath of Life, used as a line sensing protocol.
Wellfleet SRB Source Routing Bridging, proprietary header of Bay Networks which passes
Token Ring information over WAN lines.
Transport Layer Security
X.25 CCITT's recommendation
for the interface between a DTE and DCE over a PSTN.
system which is used to connect packet switched networks
(such as X.25) on international circuits.
Network System protocols, provide routing capability and
support for both sequenced and connectionless packet delivery.
XOT Cisco Systems' X.25 over TCP.
YP (NIS) Sun Yellow Pages protocol, known now as Network
Information Service, is a directory service used for name
lookup and general table enumeration.
ZIP AppleTalk Zone Information Protocol, manages
the relationship between network numbers and zone names.