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Status:

DRAFT STANDARD

Obsoletes:

RFC 1063

Authors:

J. Mogul
S. Deering

Stream:

[Legacy]

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DOI:  https://doi.org/10.17487/RFC1191

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Abstract

This memo describes a technique for dynamically discovering the maximum transmission unit (MTU) of an arbitrary internet path. It specifies a small change to the way routers generate one type of ICMP message. For a path that passes through a router that has not been so changed, this technique might not discover the correct Path MTU, but it will always choose a Path MTU as accurate as, and in many cases more accurate than, the Path MTU that would be chosen by current practice. [STANDARDS-TRACK]

For the definition ofStatus,seeRFC 2026.

For the definition ofStream, seeRFC 8729.