A New Internet-Draft is available from the on-line Internet-Drafts directories.
Title : IPv6 Path MTU Updates
Author(s) : Fred L. Templin
Filename : draft-generic-6man-tunfrag-05.txt
Pages : 7
Date : 2012-07-13
Abstract:
IPv6 intentionally deprecates fragmentation by routers in the
network. Instead, links with restricting MTUs must either drop each
too-large packet and return an ICMPv6 Packet Too Big (PTB) message or
perform link-specific fragmentation and reassembly (also known as
"link adaptation") at a layer below IPv6. This latter category of
links is often performance-challenged to accommodate steady-state
link adaptation. A common case that exhibits these link
characteristics is seen for IPv6-within-IP tunnels. Additionally,
IPv6 nodes can avoid path MTU discovery issues even when no link
adaptation is necessary by performing a small amount of fragmentation
and/or by probing the path as necessary. This document therefore
proposes an update to the base IPv6 specification to better
accommodate path MTU issues.
The IETF datatracker status page for this draft is:
https://datatracker.ietf.org/doc/draft-generic-6man-tunfrag
There's also a htmlized version available at:
http://tools.ietf.org/html/draft-generic-6man-tunfrag-05
A diff from previous version is available at:
http://tools.ietf.org/rfcdiff?url2=draft-generic-6man-tunfrag-05
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
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