[arin-ppml] Rationale for /22

Seth Mattinen sethm at rollernet.us
Fri Jul 31 13:48:46 EDT 2009

Michael K. Smith - Adhost wrote:
>> -----Original Message-----
>> From: arin-ppml-bounces at arin.net [mailto:arin-ppml-bounces at arin.net] On
>> Behalf Of William Herrin
>> Sent: Thursday, July 30, 2009 5:40 PM
>> Subject: Re: [arin-ppml] Rationale for /22
>> On Thu, Jul 30, 2009 at 8:10 PM, Michael K. Smith<mksmith at adhost.com>
>> wrote:
>>>  In the
>>> past, I've been in just this type of position, advertising multiple
>> /24's
>>> assigned from upstreams until I could justify a /20 from ARIN.  If I
>> had the
>>> opportunity to number out of a /24 instead of waiting until I had a
>> /22 I
>>> would have jumped at the chance.
>> Hi Michael,
>> Does that mean you actually used *less* BGP slots after getting your
>> ARIN addresses? So in your case, current ARIN policy was actually
>> counterproductive to its goal, causing you to announce *more* routes,
>> yes?
> That is correct.  When we went to ARIN space, this was in 1995 mind you, we went from 6 announced PA blocks to one PI block.  But, we had to keep getting PA blocks until we could justify the block from ARIN.  This happened again in 2000 with another company when we went from 4 PA blocks to one PI block.

I did the same thing to get my /22. Policy pretty much demands it.


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