Cathy Wittbrodt, ARIN Advisory Council, Moderator
This BOF gives the ARIN Advisory Council an opportunity to gather
feedback from the NANOG ISP community regarding Micro Allocations. The
BOF is not intended to set ARIN policy or for discussion of any
existing ARIN policy. If this discusson is useful, it may be that the
same BOF occurs at other regional registry meetings and other ISP
functions.
What is a Micro IP Address Allocation?
Micro IP
Allocations are small, portable, blocks longer than a /20, and perhaps
as long as a /24 or longer, to multi-homed entities. It has been
suggested that these micro allocations be out of some defined block of
space that is known to ISPs (similar to the Swamp that we know and
love).
Summary of the Lively Discussion at the Last ARIN Meeting
It has been discussed that when folks dual-home they currently often
advertise the longer prefix into the global routing tables for anyone
who will listen. Some say that micro allocations will not cause any
additional route advertisements because they're already there. The
counter argument to this is that all of these longer prefixes are
still reachable via the ISP's aggregated route, and micro allocations
would not be.
It was brought up that ISPs' customers who want full Internet
routes will have to buy heftier routers because of this. In addition,
the ISPs will also have to do that themselves. It is the case, however,
that if the block is well known, ISPs can aggregate it and announce
the aggregate to their customers, thus keeping them from having to
bear the burden of the added prefixes. It was also suggested that ISPs
could filter on this block and perhaps begin charging folks who want
the ISP to listen to the more specifics.
Agenda
- ARIN Advisory Council members who are present introduce
themselves.
- Update on ARIN open policy meetings and who should attend.
- Micro Allocations - what are they? State purpose of the BOF
(what the BOF is what the BOF is not).
- Abha Ahuja's overview of her address utilization study (routing
table prefixes).
- Presentation of various micro allocation schemes.
-
Discussion with attendees about the different schemes,
their impacts,
etc.
- Routing table impacts
- ASN depletion
-
Other
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