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Intermediate System to Intermediate System (IS-IS) is a routing protocol used in larger office networks and parts of the Internet. It quickly decides how data gets from one place to another on a network or the Internet.[1]

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References[change | change source]

  1. Gredler, Hannes; Goraiski, Walter (2005). The complete IS-IS routing protocol. Springer. pp. 1. ISBN 1-85233-822-9.