Re: PI vs PA Address Space

["Brian Carpenter CERN-CN" <]

Daniel,

> If you agree, tell me too.

Mainly.

You don't mention one of the major arguments for PI space,
i.e. customers with multiple service providers. Yakov has
written about this in detail, but I think you should mention
it.

>       IRs  will give those requesting PA space the following
>       warning:
>
>
>             Assignment of this address space is valid as
>             long   as  the  criteria  for  the  original
>             assignment are still met and  only  for  the
>             duration  of  the  service agreement between
>             yourself and ISP  XXXX  who  will  have  the
>             right  to  re-assign  the  address  space to
>             another user upon termination of the  agree-
>             ment  or  an agreed period thereafter.  This
>             means that you will have to re-configure the
>             addresses   of   all  equipment  using  this
>             address space if  you  continue  to  require
>             global  uniqueness  of those addresses. Note
>             that some Internet services do  not  require
>             globally   unique   addresses   if  accessed
>             through a NAT  or  application  layer  gate-
>             way/firewall.

I think you should lose the last sentence. It invites controversy.

>
>       IRs  will give those requesting PI space the following
>       warning:
>
>
>            Assignment of this address space is valid as
>            long   as  the  criteria  for  the  original
>            assignment are still met.  However,  assign-
>            ment  of  address  space does NOT imply that
>            this address space will be ROUTABLE  ON  ANY
>            PART  OF  THE  INTERNET. It is expected that
>            users will have to pay a premium for  actual
>            routing  of  PI  addresses  as opposed to PA
>            addresses.  It may eventually become  impos-
>            sible  to get relatively small amounts of PI
>            space routed on most of  the  Internet.   We
>            strongly suggest you contact any prospective
>            service provider for information  about  the
>            possibility  and  pricing  of  service  when
>            using PI addresses.
>
I don't think it is reasonable to give such a warning without
including the counter-balancing warning about renumbering.

	     This long-term risk is the price of avoiding the
	     potentially high cost of occasionally re-configuring
	     the addresses of all equipment using your
	     address space if you had elected to use PA addresses.

Regards,
	Brian Carpenter (CERN)  (brian@localhost)
			 voice +41 22 767 4967, fax +41 22 767 7155