Fwd: I-D Action:draft-azinger-scalable-addressing-00.txt

Michael Sinatra michael at rancid.berkeley.edu
Sun Sep 26 11:11:39 CEST 2010

On 09/25/10 12:51, Brian E Carpenter wrote:
> Michael,
> Again, cross-posting to v6ops - I think your arguments must be discussed
> there. (Normally, I avoid cross-posting like the plague.)
> Three comments on your points below:
> 1. I agree that it is not the IETF's place to assert policy
> in this area. Actually we are not supposed to, under the terms
> of RFC2860 (which, as it happens, Fred and I both signed in ink).
> 2. But it is our place to document the technical implications
> of various alternatives, as they affect the future scaling of
> the Internet. It's certainly correct that the operator community
> has most of the data and experience, of course. So I would
> advocate that any IETF document in this area is written with
> the benefit of that experience, and that it keeps away from
> asserting policy.

I heartily agree, and I would support a statement from the IETF that 
carefully laid out the implications.  I think these are well-known in 
the ops community, but it doesn't hurt to say them again.

However, I also think the IETF can do better than say "let's go back to 
the good old PA days."  Either offer a set of solutions (including 
perhaps something that limits how many prefixes an AS can orginate in 
IPv6).  The shift toward PA addressing can be one of several options. 
Then let the ops communities and RIRs choose the options.  The other 
possibility is to keep quiet and let the other communities come up with 

> 3. Finally, you say:
>>> On the other hand, having the IETF work on new
>>> protocols that scale better would probably be appreciated.
> Er, yes, but see my previous message - we've been on this
> topic in the IRTF and IETF for ten years and more, and it's hard.

You'll get no argument here.  The general issue of providing a massively 
scalable address space while limiting the DFZ routing table is a very 
hard one--and it demands difficult solutions.  I very much appreciate 
the work the IETF is doing toward this end.  At the same time, I don't 
think the current draft under consideration moves us any closer to 
solving the problem.


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