Technical Summary
This document describes a design for a lightweight decentralized
multicast group address allocation protocol (named GAAP and
pronounced "gap" as in "mind the gap"). The base allocation protocol
requires no centralized service and minimal configuration, although
deployments using encryption or administrative scoping may require
configuration. The protocol runs among group participants which need
a unique group address to send and receive multicast packets.
Tailored for IPv4 and IPv6 networks, this design offers a simple,
lightweight option rather than extending an existing protocol.
Working Group Summary
Was there anything in the WG process that is worth noting?
For example, was there controversy about particular points
or were there decisions where the consensus was
particularly rough?
There was interest in the technology by more than a few in the WG, but majority of WG fairly silent.
A major observation is that the document requests allocations of big blocks (a /10 for IPv4, a /32 group-ID block for IPv6) that needs to be done by IETF, and not a regular IANA allocation.
Document Quality
Are there existing implementations of the protocol? Have a
significant number of vendors indicated their plan to
implement the specification? Are there any reviewers that
merit special mention as having done a thorough review,
e.g., one that resulted in important changes or a
conclusion that the document had no substantive issues? If
there was a MIB Doctor, Media Type, or other Expert Review,
what was its course (briefly)? In the case of a Media Type
Review, on what date was the request posted?
There is an open source implementation referenced in the document.
IANA registered port number is preferable, however based upon https://datatracker.ietf.org/doc/draft-ietf-intarea-multicast-application-port/ the IANA expert advised against such registration. The authors decided that registration s beneficial for the technology and requested the registration to be made anyway.
Personnel
The Document Shepherd for this document is Stig Venaas. The Responsible
Area Director is Gunter Van de Velde.
IANA Note
Issues identified