Re: [tsvwg] Revised ID: draft-ietf-tsvwg-datagram-plpmtud-16.txt
Gorry Fairhurst <gorry@erg.abdn.ac.uk> Mon, 09 March 2020 16:13 UTC
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To: tsvwg@ietf.org, secdir@ietf.org
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From: Gorry Fairhurst <gorry@erg.abdn.ac.uk>
Cc: Stephen Farrell <stephen.farrell@cs.tcd.ie>
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Date: Mon, 09 Mar 2020 16:13:07 +0000
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Subject: Re: [tsvwg] Revised ID: draft-ietf-tsvwg-datagram-plpmtud-16.txt
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This revision follows the issues raised by the IETF Last Call SECDIR Review (of draft-15). We think this will address all the security-related issues that were noted. (It also addresses one case of repetition that was found.) Gorry, et al (DPLPMTUD editors) On 09/03/2020 14:30, internet-drafts@ietf.org wrote: > A New Internet-Draft is available from the on-line Internet-Drafts directories. > This draft is a work item of the Transport Area Working Group WG of the IETF. > > Title : Packetization Layer Path MTU Discovery for Datagram Transports > Authors : Godred Fairhurst > Tom Jones > Michael Tuexen > Irene Ruengeler > Timo Voelker > Filename : draft-ietf-tsvwg-datagram-plpmtud-16.txt > Pages : 44 > Date : 2020-03-09 > > Abstract: > This document describes a robust method for Path MTU Discovery > (PMTUD) for datagram Packetization Layers (PLs). It describes an > extension to RFC 1191 and RFC 8201, which specifies ICMP-based Path > MTU Discovery for IPv4 and IPv6. The method 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 (where packets are discarded). The method can probe a > network path with progressively larger packets to discover whether > the maximum packet size can be increased. This allows a sender to > determine an appropriate packet size, providing functionality for > datagram transports that is equivalent to the Packetization Layer > PMTUD specification for TCP, specified in RFC 4821. > > The document updates RFC 4821 to specify the method for datagram PLs, > and updates RFC 8085 as the method to use in place of RFC 4821 with > UDP datagrams. Section 7.3 of RFC4960 recommends an endpoint apply > the techniques in RFC 4821 on a per-destination-address basis. RFC > 4960, RFC 6951 and RFC 8261 are updated to recommend that SCTP, SCTP > encapsulated in UDP and SCTP encapsulated in DTLS use the method > specified in this document instead of the method in RFC 4821. > > The document also provides implementation notes for incorporating > Datagram PMTUD into IETF datagram transports or applications that use > datagram transports. > > When published, this specification updates RFC 4960, RFC 4821, RFC > 8085 and RFC 8261. > > > The IETF datatracker status page for this draft is: > https://datatracker.ietf.org/doc/draft-ietf-tsvwg-datagram-plpmtud/ > > There are also htmlized versions available at: > https://tools.ietf.org/html/draft-ietf-tsvwg-datagram-plpmtud-16 > https://datatracker.ietf.org/doc/html/draft-ietf-tsvwg-datagram-plpmtud-16 > > A diff from the previous version is available at: > https://www.ietf.org/rfcdiff?url2=draft-ietf-tsvwg-datagram-plpmtud-16 > > > Please note that it may take a couple of minutes from the time of submission > until the htmlized version and diff are available at tools.ietf.org. > > Internet-Drafts are also available by anonymous FTP at: > ftp://ftp.ietf.org/internet-drafts/ >
- [tsvwg] I-D Action: draft-ietf-tsvwg-datagram-plp… internet-drafts
- Re: [tsvwg] Revised ID: draft-ietf-tsvwg-datagram… Gorry Fairhurst