[arin-ppml] 2-byte and 4-byte ASNs

David Miller dmiller at tiggee.com
Fri Apr 18 17:07:44 EDT 2014



On 4/18/2014 4:32 PM, William Herrin wrote:
> On Fri, Apr 18, 2014 at 4:21 PM, Jason Schiller <jschiller at google.com> wrote:
>> The ARIN community continues to suggest there is no hardware reason that
>> would prevent support of 4-byte ASNs.  The community desires that we use up
>> the 2-byte ASNs and continue to send a message that code upgrades to support
>> 4-byte ASNs are now required.
> 
> 
> Question:
> 
> Large ISPs implement BGP communities with a convention of 16-bit ASN
> followed by 16-bits of locally defined meaning, such as set local pref
> to 80.
> 
> Does a comparable convention exist when dealing with 32-bit ASNs? If
> not, what's the plan?
> 
> Regards,
> Bill Herrin
> 
> 
> 

RFC 5668 - 4-Octet AS Specific BGP Extended Community
http://tools.ietf.org/html/rfc5668

-DMM

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