Allocation of IP Addresses
JimFleming at unety.net
Thu Mar 14 03:25:20 UTC 1996
You are NOT "all wet"...your exact conclusions have been
reached by others...but the policies do not change...
Keep in mind that you are talking about policies which have
not been set by a large number of people, or a democratic process...
IANA is run by one person, Jon Postel...he is copied here
also check out http://www.netsol.com for more information...
The Internet (and Internic) have been transformed during the
past 12 months into a "big money" game...IP addressess
are now very valuable..."routable" IP addresses are even more
valuable..."routability" is determined by the ISPs...unfortunately
the ISPs use a small percentage of the IP addresses and have
very little to say about how they are allocated...
From: Jim Browning[SMTP:jfbb at atmnet.net]
Sent: Wednesday, March 13, 1996 4:06 PM
To: 'com-priv list'; 'NANOG List'; 'NIC Registry list'
Subject: Allocation of IP Addresses
I may be opening a can of worms, and if so, I believe it is one which needs
to be opened. If this topic has been beaten to death in the past, then I
apologize, however as it is a rapidly evolving topic, it warrants repeated
discussion and evaluation. My fundamental questions are:
1. Is InterNIC consistently applying objective criteria in its evaluation
of requests for the allocation of IP address blocks?
2. If so, what are the criteria?
The INTERNIC IP ALLOCATION GUIDELINES FOR INTERNET SERVICE PROVIDERS states
that "allocation is based on the ISP's 3 - 6 month requirement and other
information the InterNIC deems necessary". There is no detail provided (in
any document I have found) of what other information InterNIC deems to be
I find an apparent conflict between established policy and its actual
implementation on a day-to-day basis. CIDR dictates that addresses should
be aggregated into the largest blocks possible, and that the publishing of
extraneous routes be eliminated. In keeping with this, and because of
often discussed operational considerations, the minimum size of blocks
routed at the NAPs is growing larger and larger. To ease participation at
the national level, you must ensure to the fullest extent possible that
your address space is routable as a single block. In order to accomplish
this, you must obtain either:
A. a single allocation capable of supporting planned growth, or
B. incremental allocations of *contiguous* blocks
InterNIC's current CIDR allocation practice does not support either of
these options. Due to the shortage of *available* IP addresses (there are
of course millions of allocated but unused addresses floating around),
InterNIC is using a "slow start" approach which provides incremental
increases in total address space, with no guarantee that future increments
will be contiguous. This means that the only way to maintain efficient
routing is to engage in repeated renumbering of customer addresses to
consolidate into increasingly larger blocks.
How many times is it reasonable to ask a customer to renumber? Once is
certainly reasonable. Twice is questionable. More than that and I would
suspect the customer would renumber all right, but as part of shifting to a
The day to day implementation of policy by the InterNIC has increasingly
critical impact on our industry, to the point of controlling who has the
opportunity to succeed and who does not. IMHO, it is imperative that:
1. this function be performed in an understandable manner,
2. objective criteria be consistently applied
3. the criteria in use be publicly available, and
4. there be defined mechanisms for the 'appeal' of decisions made in the
processing of allocation requests.
Recent experience and observation leads me to conclude that these
imperatives are perhaps not being met. Am I all wet????
Jim Browning <jfbb at ATMnet.net>
619/812-2860 Fax 619/812-2867
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