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Status:

PROPOSED STANDARD

Obsoletes:

RFC 3373

Authors:

D. Katz
R. Saluja
D. Eastlake 3rd

Stream:

IETF

Source:

isis (rtg)

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DOI:  https://doi.org/10.17487/RFC5303

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Abstract

The IS-IS routing protocol (Intermediate System to IntermediateSystem, ISO 10589) requires reliable protocols at the link layer forpoint-to-point links. As a result, it does not use a three-wayhandshake when establishing adjacencies on point-to-point media.This paper defines a backward-compatible extension to the protocolthat provides for a three-way handshake. It is fully interoperablewith systems that do not support the extension.

Additionally, the extension allows the robust operation of more than256 point-to-point links on a single router.

This extension has been implemented by multiple router vendors; thispaper is provided to the Internet community in order to allowinteroperable implementations to be built by other vendors. [STANDARDS-TRACK]

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.