On Wed, Jul 21, 2021 at 8:39 PM William Herrin <[email protected]> wrote:

> On Tue, Jul 20, 2021 at 12:52 PM ARIN <[email protected]> wrote:
> > Replace
> > “Sites that do not require a unique AS Number should use one or more of
> the AS Numbers reserved for private use.”
> >
> > with
> > “Private ASNs should be used only when there is no plan to use them on
> the public Internet.”
>
> This is factually incorrect. It's uncommon but legitimate practice to
> employ a private AS number which is dropped from the path by your
> upstream provider.


Practically, I don’t agree. But I don’t ever recall seeing it. Im my
experience, private ASN use is rare.

>

>
>
[ clip ]

> 3. “AS Numbers are issued based on current need. An organization should
> request an AS Number only when it is already multihomed or will immediately
> become multihomed.” All ARIN delegations are based on current needs, and
> some customers aren’t aware they need network plans when they request an AS
> Number. Additionally, clarification that some organizations may have a
> unique need for an AS Number outside of utilizing a unique routing policy,
> such as BGP.
>
> Can't we just be rid of justified needs analysis for AS numbers? What
> exactly is the objective of preventing someone who thinks they want an
> AS number from getting one? There aren't really any scarcity issues
> and having or lacking an AS number doesn't particularly change one's
> ability to introduce routes into the public BGP table.
>

An ASN is handy for single homed networks with multiple ingress or exit
points as a collective: “multi discreet networks”. That policy narrative
may need tweaking. In 2021, ARIN policy should probably work to less define
technical parameters of how to use an ASN.

Warm regards,

-M<
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