[ppml] 2005-1:Business Need for PI Assignments

Marshall Eubanks tme at multicasttech.com
Wed Apr 20 19:03:26 EDT 2005

On Wed, 20 Apr 2005 13:43:50 -0600
 "Randy Lindsey" <RLindsey at coinfotech.com> wrote:
> > We need to come up with a criteria for PI space that will constrain 
> > the recipient pool to a reasonably small set of large institutions, 
> > i.e. those who will be multi-homing and for whom renumbering would be 
> > a major and painful task.
> Not only large institutions find it painful and expensive to renumber.
> Small ISP's take just as long, and relative to their size the expense is
> as great or greater than for a large one.  Remember staff resources are
> proportional to size of the organization.  Years ago it took my small
> ISP months to migrate from one provider's /21 to another provider.
> The current IPv4 minimum of a /19 or /20 is already tough for small

They can go for a smaller allocation if they are multi-homed, thanks to 2002-3 :


Marshall Eubanks

> ISP's to reach and eliminates nearly all end-user organizations (in the
> larger context of millions of end-user organizations).  I think the IPv6
> limit should target the same size of organization as the current IPv4
> limit does.  If I multi-home and can qualify for a PI block under IPv4,
> I should be able to get one in IPv6 too.
> Randy Lindsey
> Colorado Information Technologies, Inc.
> http://www.coinfotech.com

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