nanog mailing list archives

Re: An informal survey... round II


From: Andrew D Kirch <trelane () trelane net>
Date: Thu, 30 Aug 2007 10:18:41 -0400


John Curran wrote:
At 9:12 AM -0400 8/30/07, William Herrin wrote:
On 8/30/07, John Curran <jcurran () mail com> wrote:
I.E.  If at some time unknown around 2010, ISP's stop receiving
new allocations from their RIR, and instead use of many smaller
"recycled" IPv4 address blocks, we could be looking at a 10x to
20x increase in routes per month for the same customer growth.
John,

Why should we announce tiny recycled blocks? If there is a /16 in the
swamp in which half the space is free but its all /24's, why wouldn't
wouldn't we allocate all the free /24's to a single entity and
instruct the entity to announce it as a "holey" /16? The existing /24
holders will override (punch holes in) the /16 for their /24's.

Consider large ISP's that can no longer obtain from the large blocks
(e.g. /12 to /16) but instead must beg/barter/borrow blocks from others
which are several orders  of magnitude smaller (e.g. /16 through /24)
every week to continue growing...  such obtained blocks would be
announced into the routing system very rapidly as we try to keep
IPv4 running post depletion of the free address pool.  When this
inflection point is reached, how much headroom do we have given
equipment being deployed today?

/John
Is there a possible revenue stream here for larger ISP's to begin charging their customers for not aggregating, and creating a penalty fee for each borken route? We're running out of IPv4 space (and I don't think this can be solved with IPv4). We're running out of routes for the Cisco Sup2 engine (among others), but unless someone makes money on it, this won't be solved.


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