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Re: classful routes redux

  • From: Russ White
  • Date: Fri Nov 04 10:07:43 2005

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Joe Abley wrote:
> 
> On 4-Nov-2005, at 09:07, Russ White wrote:
> 
>> - -- BGP is currently moving to a 2^32 space for AS numbers. That's  odd,
>> if there's only 18,044 origins in the current table, and it won't ever
>> grow to much more--how'd we lose 40,000 or so AS numbers, that we now
>> need more than 64,000?
> 
> 
> http://www.nanog.org/mtg-0510/huston.as.html
> http://www.nanog.org/mtg-0510/wilhelm.html

 From the second source:

"If all these unused ASNs could be recovered, the pool of ASNs would 
last until 2025 to 2030."

So, if we think that 2^32 is ultimately unobtainable, we're just facing 
a deadline with 2^32's being the "norm" per AS of a few years longer. Of 
course, this doesn't even answer the question of how to get from 2^18 
currently, to 2^32 in the first place.

:-)

Russ

- -- 
riw@cisco.com CCIE <>< Grace Alone


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