Networking Glossary
- ISDN (Integrated Services Digital Network) An emerging technology which is beginning to be offered by the telephone carriers of the world. ISDN combines voice and digital network services in a single medium making it possible to offer customers digital data services as well as voice connections through a single "wire." The standards that define ISDN are specified by CCITT. [Source: RFC 1208]
- IGP (Interior Gateway Protocol) The protocol used to exchange routing information between collaborating routers in the Internet. RIP and OSPF are examples of IGPs. [Source: RFC 1208]
- intermediate system An OSI system which is not an end system, but which serves instead to relay communications between end systems. See repeater, bridge, and router. [Source: RFC 1208]
- IS-IS (Intermediate system to Intermediate system protocol) The OSI protocol by which intermediate systems exchange routing information. [Source: RFC 1208]
- IONL (Internal Organization of the Network Layer) The OSI standard for the detailed architecture of the Network Layer. Basically, it partitions the Network layer into subnetworks interconnected by convergence protocols (equivalent to internetworking protocols), creating what Internet calls a catenet or internet. [Source: RFC 1208]
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