[ppml] Revising Centrally Assigned ULA draft

David Conrad drc at virtualized.org
Tue Jun 19 12:37:02 EDT 2007


On Jun 18, 2007, at 12:26 PM, David Williamson wrote:
> The number of routing slots really is important, regrettably.

No argument.  I gather the question is, who is responsible for them?   
The RIRs or the ISPs?

> That
> whole loc/id split thing will need to get solved, somehow.

There are many solutions.  None of which are likely to actually get  
deployed in the real world.  The problem is that as you get more IPv6  
penetration, the harder it is to make changes.  You end up needing  
what Noel Chiappa calls a "jack up" solution: take the entire  
Internet, jack it up, and insert something underneath it that  
actually scales.  This is hard and typically requires coordination.   
Filters are much easier and require no coordination.

> I know I'm
> really not looking forward to the BGP replacement period.  I  
> suspect it
> will be at least as painful as the IPv4 -> IPv6 transition.

"Life is pain." -- Siddharta Gautama

> I simply
> don't think the current combination of BGP and IP is going to scale
> in the way that some folks claim.  I could be wrong, but....

You're not wrong.  Flat routing is not scalable, but that's the  
direction we're heading for very valid business reasons.  The  
question is, how do we deal with it.  As far as I can tell, of the  
people who actually think about this stuff, there are 6 camps:

- The Moore's Law Groupies: hardware technology will save us.

- The loc/id Dreamers: new Internet architecture will save us.

- The King Canute Wannabes: Stop, tide!  Stop, you hear me!

- The Ostrich Emulators: It works today. Scalability is hard. Let's  
go shopping!

- The CIDR Warriors: Been there, done that. Filters are your friend.

- The Cynics: We're doomed anyway.

No points for guessing which camp I fall in... :-)


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