[arin-ppml] Draft Policy ARIN-2021-3: Private AS Number and Unique Routing Policy Clarifications

[Martin Hannigan]

I’m not endorsing anything, but the remarks that Chris regarding the
content he commented on were good observations that are typical of our lack
of writing standards for the NRPM. I could see budget being spent on
improving that.

Andrew: How does a public 32 bit ASN reduce the need to use a private ASN?

Warm regards,

-M<


On Wed, Jul 21, 2021 at 4:38 PM Andrew Dul <andrew.dul at quark.net> wrote:

> Based upon the input we have received from ARIN staff it seems that
> additional clarity is desired in section 5 for ASN assignments.
>
> I am not convinced however that the current draft text is the best way
> to fix the issues raised so far.  I don't have specific test suggestions
> at this point but believe we should discuss how the text should be
> improved in light of how ASNs are now being used by various cloud
> providers and the fact that ASNs are now 32-bits in length which in many
> cases reduces the need to use private AS numbers.
>
> Andrew
>
> On 7/20/2021 5:23 PM, Chris Woodfield wrote:
> > Speaking in support, but I’d like to recommend an adjustment in the
> proposal text. I think the phrase “unique routing policy, such as BGP” is
> technically incorrect; BGP is a protocol, not a policy. BGP is how a
> network *communicates* the relevant aspects of its unique routing policy to
> its peers, but is not the policy in and of itself.
> >
> > As such, where the proposal text says “unique routing policy, such as
> BGP”, I think this should read “unique routing policy, implemented via BGP”
> - that should fix the bug here.
> >
> > Hope this helps,
> >
> > -C
> >
> >> On Jul 20, 2021, at 12:52 PM, ARIN <info at arin.net> wrote:
> >>
> >> On 15 July 2021, the ARIN Advisory Council (AC) accepted
> "ARIN-prop-298: Private AS Number and Unique Routing Policy Clarifications"
> as a Draft Policy.
> >>
> >> Draft Policy ARIN-2021-3 is below and can be found at:
> >>
> >> https://www.arin.net/participate/policy/drafts/2021_3/
> >>
> >> You are encouraged to discuss all Draft Policies on PPML. The AC will
> evaluate the discussion in order to assess the conformance of this draft
> policy with ARIN's Principles of Internet number resource policy as stated
> in the Policy Development Process (PDP). Specifically, these principles are:
> >>
> >> * Enabling Fair and Impartial Number Resource Administration
> >> * Technically Sound
> >> * Supported by the Community
> >>
> >> The PDP can be found at:
> >> https://www.arin.net/participate/policy/pdp/
> >>
> >> Draft Policies and Proposals under discussion can be found at:
> >> https://www.arin.net/participate/policy/drafts/
> >>
> >> Regards,
> >>
> >> Sean Hopkins
> >> Senior Policy Analyst
> >> American Registry for Internet Numbers (ARIN)
> >>
> >>
> >>
> >> Draft Policy ARIN-2021-3: Private AS Number and Unique Routing Policy
> Clarifications
> >>
> >> Problem Statement:
> >>
> >> At ARIN 47, staff identified three points of potential confusion with
> current text in NRPM Section 5: AS Numbers.
> >>
> >> 1. “Sites that do not require a unique AS Number should use one or more
> of the AS Numbers reserved for private use.” Some customers are not aware
> that their need for a unique AS Number depends upon their need (or lack
> thereof) to utilize the AS Number on the public Internet.
> >>
> >> 2. “In order to be assigned an AS Number, each requesting organization
> must provide ARIN with verification that it has one of the following…A
> unique routing policy (its policy differs from its border gateway peers)…A
> multihomed site.” Few customers qualify for an AS Number under the “unique
> routing policy” requirement, specifically because they aren’t aware of what
> “unique routing policy” applies to.
> >>
> >> 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.
> >>
> >> Policy statement:
> >>
> >> In Section 5 -
> >>
> >> 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.”
> >>
> >> Replace
> >>
> >> “1. A unique routing policy (its policy differs from its border gateway
> peers) 2. A multihomed site.”
> >>
> >> with
> >>
> >> “1. A plan to connect their network using a unique routing policy, such
> as Border Gateway Protocol (BGP) 2. A network requiring routing policies to
> be deployed which are unique only to that network”
> >>
> >> Replace
> >>
> >> “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.”
> >>
> >> with
> >>
> >> “AS Numbers should be requested when an organization has network plans
> ready and is either planning to use a unique routing policy (such as BGP)
> or has a unique need for an AS Number.”
> >>
> >> Timetable for implementation: Immediate
> >>
> >>
> >>
> >> _______________________________________________
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