Leo Vegoda wrote: > On 27 Jun 2007, at 1:03pm, Jeroen Massar wrote: > > [...] > >>> Most childhood illnesses go away but the /48 assignments made by ARIN >>> and APNIC are permanent. What incentive is there - or will there be - >>> for those organisations to return their prefixes and take PA space from >>> one or more of their upstream providers? >> >> ISPs can then force them. "Oh you want to announce a /48? Cool, but show >> us the money". It will then be cheaper to use their PA block on the >> 'outside' as a Locator, while using their own PI block as a Identifier. >> Filtering by the majority of the ISP's, accepting only /32's or for that >> matter only blocks from PA space, resolves all of that, with a little >> bit of force but it will work. > > I don't remember many ISPs trying to force their customers with several > classful assignments to renumber into a single PA assignment. Why do you > think ISPs will try and force renumber (or re-prefixing) costs on their > existing customers?
With the in-progress/proposed/... id/loc & shim6 mechanisms you don't
renumber, they keep using their own PI block. See it as automatically
tunneling over the Internet to the remote site.
Current situation:
2001:db8::42/48
+-----+
| YOU |---------[ Upstream ]---{ The Internet }-----{ Them }
+-----+
Versus the to-maybe-one-day-be-situation:
2001:db8::42/48
+-----+
| YOU |----*-----[ Upstream ]---{ The Internet }----*--- { Them }
+-----+ ^ ^
| |
\----- id/loc or shim6 mechanism -------/
The "YOU" keeps their nice comfortable /48 and adds the new mechanism,
presto. It looks/feels like a automated tunnel mechanism. Of course the
exact details are not out on this yet, and I might describe it
completely wrongly above wrong what it finally will be.
The core thing is: No DFZ entries for "PI sites", but the "PI sites" do
use their own address space and have full control over it.
ISP's can then simply provide two services "BGP" or "Normal /48", prize
will make people move at some places and not at others and in some cases
filtering will force people to move.
Greets,
Jeroen
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