address family --A group of network protocols that share a common format of network address. Address families are defined by RFC 1700.
AS --autonomous system. An IP term to describe a routing domain that has its own independent routing policy and is administered by a single authority. Equivalent to the OSI term "routing domain."
BGP --Border Gateway Protocol. Interdomain routing protocol that exchanges reachability information with other BGP systems.
CLNS --Connectionless Network Service . An OSI network-layer protocol.
CMIP --Common Management Information Protocol. In OSI, a network management protocol created and standardized by ISO for the monitoring and control of heterogeneous networks.
DCC --data communications channel.
DCN --data communications network.
ES-IS --End System-to-Intermediate System. OSI protocol that defines how end systems (hosts) announce themselves to intermediate systems (routers).
FTAM --File Transfer, Access, and Management. In OSI, an application-layer protocol developed for network file exchange and management between diverse types of computers.
IGP --Interior Gateway Protocol. Internet protocol used to exchange routing information within an autonomous system.
IGRP --Interior Gateway Routing Protocol. A proprietary Cisco protocol, developed to address the issues associated with routing in large, heterogeneous networks.
IS --intermediate system. Routing node in an OSI network.
IS-IS --Intermediate System-to-Intermediate System. OSI link-state hierarchical routing protocol based on DECnet Phase V routing, where routers exchange routing information based on a single metric, to determine network topology.
ISO --International Organization for Standardization. International organization that is responsible for a wide range of standards, including those relevant to networking. ISO developed the Open System Interconnection (OSI) reference model, a popular networking reference model.
NSAP address --network service access point address. The network address format used by OSI networks.
OSI --Open System Interconnection. International standardization program created by ISO and ITU-T to develop standards for data networking that facilitate multivendor equipment interoperability.
routing domain --The OSI term that is equivalent to autonomous system for BGP.
SDH --Synchronous Digital Hierarchy. Standard that defines a set of rate and format standards that are sent using optical signals over fiber.
SONET --Synchronous Optical Network. High-speed synchronous network specification designed to run on optical fiber.