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

William Herrin bill at herrin.us
Fri Apr 18 16:32:08 EDT 2014

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.


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?

Bill Herrin

William D. Herrin ................ herrin at dirtside.com  bill at herrin.us
3005 Crane Dr. ...................... Web: <http://bill.herrin.us/>
Falls Church, VA 22042-3004

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