[arin-ppml] Advisory Council Meeting Results - July 2009

Owen DeLong owen at delong.com
Tue Jul 21 16:09:02 EDT 2009

> I can try, and I'm sure someone will correct me if I'm wrong...
> Up until January 1 2010, ARIN distinguishes between 2-byte and 4- 
> byte ASNs, and lets you have a 2-byte if you need it, but gives out  
> 4-bytes otherwise, to spur adoption.
> After January 1 2010, ARIN ceases to make any distinction between 2- 
> byte and 4-byte ASNs.  Instead, they simply give out ASNs as they  
> always have, working up from the bottom.  At first, the ASNs given  
> out will be <64k.  Eventually, when that block of ASNs is used up,  
> they'll move on to higher numbers >64k.  Presumably by then everyone  
> with a growing network will have rolled out code to support 4-byte  
> ASNs.

More importantly, by then, it really doesn't matter since there aren't  
any 16-bit ASNs left to give out.


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