Hi, all,
Here's a short summary of the changes.
Joe
----
- a few typo fixes
- removed discussion on ID for ICMP validation (it never got out of the
proposed stage)
- changed from "Cocode" to "mathematical expression" to avoid needing a
BSD-stye license (since the example wasn't intended as running code anyway)
- formalized the recommendation that SMF treat IPv4 like IPv6, i.e., use
hashes rather than the ID field for duplicate packet detection
- expanded the header compression discussion with new examples
- included discussion on use of the ID field for debugging, and
alternates (which are needed for IPv6 anyway)
- added ACKs for the recent contributors (thanks, BTW)
----
On 9/16/2011 2:15 PM, 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 Internet Area Working Group Working Group of the IETF.
Title : Updated Specification of the IPv4 ID Field
Author(s) : Joe Touch
Filename : draft-ietf-intarea-ipv4-id-update-04.txt
Pages : 16
Date : 2011-09-16
The IPv4 Identification (ID) field enables fragmentation and
reassembly, and as currently specified is required to be unique
within the maximum lifetime for all datagrams with a given
source/destination/protocol tuple. If enforced, this uniqueness
requirement would limit all connections to 6.4 Mbps. Because
individual connections commonly exceed this speed, it is clear that
existing systems violate the current specification. This document
updates the specification of the IPv4 ID field in RFC791, RFC1122,
and RFC2003 to more closely reflect current practice and to more
closely match IPv6 so that the field's value is defined only when a
datagram is actually fragmented. It also discusses the impact of
these changes on how datagrams are used.
A URL for this Internet-Draft is:
http://www.ietf.org/internet-drafts/draft-ietf-intarea-ipv4-id-update-04.txt
Internet-Drafts are also available by anonymous FTP at:
ftp://ftp.ietf.org/internet-drafts/
This Internet-Draft can be retrieved at:
ftp://ftp.ietf.org/internet-drafts/draft-ietf-intarea-ipv4-id-update-04.txt
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