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What does IS-IS stand for? 

What does IS-IS mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: IS-IS.

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IS-IS

Intermediate System to Intermediate System

Computing » Networking -- and more...

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What does IS-IS mean?

IS-IS
Intermediate System to Intermediate System is a routing protocol designed to move information efficiently within a computer network, a group of physically connected computers or similar devices. It accomplishes this by determining the best route for datagrams through a packet-switched network. The protocol was defined in ISO/IEC 10589:2002 as an international standard within the Open Systems Interconnection reference design. Though originally an ISO standard, the IETF republished the protocol as an Internet Standard in RFC 1142. IS-IS has been called "the de facto standard for large service provider network backbones."

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