[sig-policy] A second policy proposal for the Policy SIG
Dear SIG members
The proposal "IPv6 portable assignment for multihoming" has been sent to the
Policy SIG for review. It will be presented at the Policy SIG at APNIC
22 in Kaohsiung, Taiwan, 4-8 September 2006. You are invited to review and
comment on the proposal on the mailing list before the meeting.
The proposal's history can be found at:
http://www.apnic.net/docs/policy/proposals/prop-035-v001.html
Please feel free to submit your own policy proposal for discussion at APNIC
22.
Regards
Kenny Huang
Policy SIG
huangk at alum dot sinica dot edu
________________________________________________________________________
prop-035-v001: IPv6 portable assignment for multihoming
________________________________________________________________________
Authors: Katsuyasu Toyama
Takashi Arano
Tomohiro Fujisaki
Toshinori Ishii
Kosuke Ito
Dai Nishino,
Noriaktsu Ohishi
Izumi Okutani
Version: 1
Date: 2 June 2006
SIG: Policy
Introduction
------------
This policy allows 'end-sites' to be assigned IPv6 portable addresses only
if the end-sites are multihomed, or plan to be multihomed.
Summary
-------
The current policy does not allow IPv6 portable assignment to any
end-sites. This obstructs end-site organizations which need redundancy
in internet connectivity for stable network operation.
Shim6, another multihoming technology discussed in IETF, is not a
perfect replacement of the current multihoming technology using BGP due
to traffic engineering. In addition, it will take time to standardize
and implement Shim6.
Situation
--------
ARIN has been discussing the IPv6 Provider-independent address. The
draft was proposed in 2005 and moved to the last call after the meeting
consensus in April 2006.
RIPE started PI discussion at RIPE in this May.
AFRINIC and LACNIC discussed similar proposals recently in their Open
Policy meetings. In those regions, the issue has been returned to their
public mailing lists for further discussion.
Note: APNIC uses the term "portable" rather than "provider-independent"
(PI).
Details
-------
(1) Assignment target:
End-sites which are multihomed or plan to be multihomed, regardless
of their size.
(2) Assignment criteria:
(2-a) The end site which is assigned IPv6 portable address space
must be multihomed using the assigned portable address space
in three (3) months.
(2-b) If the portable address space is not used for multihoming
after three (3) months, the address space must be reclaimed.
(2-c) The end site which is assigned IPv6 portable address space
must pay the fee for the space.
(3) Portable address space:
(3-a) The portable assignment should be made from a specified block
separate from address space used for portable allocations
(3-b) The portable assignment size to an end-site should be the same
size as in non-portable assignments, currently /48,
or a shorter prefix if the end-site can justify it.
Pros/Cons
---------
Advantages:
(1) Provides the solution for end-sites which require redundancy in
IPv6 and currently not able to do so due to the lack of
technical solutions.
(2) Assignment of the portable address space is limited only to
'multihoming purposes'; only end-sites which are or planned to
be multihomed can be assigned a portable address. This reduces
the consumption of portable address space as well as the growth
of the global routing table.
(3) Portable assigned address space is separate from portable
allocated address space, therefore:
(3-1) It helps preventing 'punching holes' in the portable
allocated address space because prefixes which are longer
than /32 can be filtered in portable allocated space.
(3-2) it is relatively easy to abandon the portable assigned
address space in case some better techinical solutions
are developed in the future.
Disadvantages:
It may lead to growth in the global routing table, but we think the
growth is almost the same in case that providers and end-sites start
using 'punching holes' for multihoming.
Effect on APNIC
---------------
No direct effect on the existing APNIC members, nor changes to the
current IPv6 allocation criteria.
Effect on NIRs
--------------
NIR can adopt this policy at its discretion.