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RFC 8899
Title: Packetization Layer Path MTU Discovery
for Datagram Transports
Author: G. Fairhurst,
T. Jones,
M. Tüxen,
I. Rüngeler,
T. Völker
Status: Standards Track
Stream: IETF
Date: September 2020
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 35
Updates: RFC 4821, RFC 4960, RFC 6951, RFC 8085, RFC 8261
I-D Tag: draft-ietf-tsvwg-datagram-plpmtud-22.txt
URL: https://www.rfc-editor.org/info/rfc8899
DOI: 10.17487/RFC8899
This document specifies Datagram Packetization Layer Path MTU
Discovery (DPLPMTUD). This is a robust method for Path MTU Discovery
(PMTUD) for datagram Packetization Layers (PLs). It allows a PL, or a
datagram application that uses a PL, to discover whether a network
path can support the current size of datagram. This can be used to
detect and reduce the message size when a sender encounters a packet
black hole. It can also probe a network path to discover whether the
maximum packet size can be increased. This provides functionality
for datagram transports that is equivalent to the PLPMTUD
specification for TCP, specified in RFC 4821, which it updates. It
also updates the UDP Usage Guidelines to refer to this method for use
with UDP datagrams and updates SCTP.
The document provides implementation notes for incorporating Datagram
PMTUD into IETF datagram transports or applications that use datagram
transports.
This specification updates RFC 4960, RFC 4821, RFC 6951, RFC 8085,
and RFC 8261.
This document is a product of the Transport Area Working Group Working Group of
the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
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