Hi Alice, 

I approve this version of the document. 

Thanks,
Acee

> On Jul 15, 2025, at 2:57 PM, Alice Russo <aru...@staff.rfc-editor.org> wrote:
> 
> Acee, Jie,
> 
> Thank you for your replies. The revised files are here (please refresh):
>  https://www.rfc-editor.org/authors/rfc9816.html
>  https://www.rfc-editor.org/authors/rfc9816.txt
>  https://www.rfc-editor.org/authors/rfc9816.pdf
>  https://www.rfc-editor.org/authors/rfc9816.xml
> 
> This diff file shows all changes from the approved I-D:
>  https://www.rfc-editor.org/authors/rfc9816-diff.html
>  https://www.rfc-editor.org/authors/rfc9816-rfcdiff.html (side by side)
> 
> This diff file shows the changes made during AUTH48 thus far:
>  https://www.rfc-editor.org/authors/rfc9816-auth48diff.html
>  https://www.rfc-editor.org/authors/rfc9816-auth48rfcdiff.html (side by side)
> 
> This diff file shows only the changes since the last posted version:
>  https://www.rfc-editor.org/authors/rfc9816-lastrfcdiff.html
> 
> The requested changes have been made, except for this sentence in Section 8:
>   However, this is no different than if classical BGP routing 
>   using the IPv4 and IPv6 address families were used.
> 
> We did not change 'were' to 'was' here because it's correct use of 'were' 
> (subjunctive after 'if').
> 
> We will wait to hear from you again and from your coauthors
> before continuing the publication process. This page shows 
> the AUTH48 status of your document:
>  https://www.rfc-editor.org/auth48/rfc9816
> 
> Thank you.
> RFC Editor/ar
> 
>> On Jul 14, 2025, at 3:49 AM, Acee Lindem <acee.i...@gmail.com> wrote:
>> 
>> Good catch Jie...
>> 
>> Specifically, that would be: 
>> 
>> *** rfc9816.orig.txt Sat Jul 12 17:29:45 2025
>> --- rfc9816.bfd.txt  Mon Jul 14 06:46:43 2025
>> ***************
>> *** 201,207 ****
>>    Alternatively, as each and every router in the BGP-SPF domain will
>>    have a complete view of the topology, the operator can also choose to
>>    configure BGP sessions in the hop-by-hop peering model described in
>> !    [RFC7938] along with BFD [RFC5580].  In doing so, while the hop-by-
>>    hop peering model lacks the inherent benefits of the controller-based
>>    model, BGP updates need not be serialized by the BGP best-path
>>    algorithm in either of these models.  This helps overall network
>> --- 201,207 ----
>>    Alternatively, as each and every router in the BGP-SPF domain will
>>    have a complete view of the topology, the operator can also choose to
>>    configure BGP sessions in the hop-by-hop peering model described in
>> !    [RFC7938] along with BFD [RFC5880].  In doing so, while the hop-by-
>>    hop peering model lacks the inherent benefits of the controller-based
>>    model, BGP updates need not be serialized by the BGP best-path
>>    algorithm in either of these models.  This helps overall network
>> ***************
>> *** 251,257 ****
>> 
>> 5.2.1.  Sparse Peering Model
>> 
>> !    Alternately, BFD [RFC5580] can be used to swiftly determine the
>>    availability of links, and the BGP peering model can be significantly
>>    sparser than the data center fabric.  BGP-SPF sessions only need to
>>    be established with enough peers to provide a biconnected graph.  If
>> --- 251,257 ----
>> 
>> 5.2.1.  Sparse Peering Model
>> 
>> !    Alternately, BFD [RFC5880] can be used to swiftly determine the
>>    availability of links, and the BGP peering model can be significantly
>>    sparser than the data center fabric.  BGP-SPF sessions only need to
>>    be established with enough peers to provide a biconnected graph.  If
>> ***************
>> *** 534,544 ****
>>    [RFC5340]  Coltun, R., Ferguson, D., Moy, J., and A. Lindem, "OSPF
>>               for IPv6", RFC 5340, DOI 10.17487/RFC5340, July 2008,
>>               <https://www.rfc-editor.org/info/rfc5340>.
>> -
>> -    [RFC5580]  Tschofenig, H., Ed., Adrangi, F., Jones, M., Lior, A., and
>> -               B. Aboba, "Carrying Location Objects in RADIUS and
>> -               Diameter", RFC 5580, DOI 10.17487/RFC5580, August 2009,
>> -               <https://www.rfc-editor.org/info/rfc5580>.
>> 
>>    [RFC5880]  Katz, D. and D. Ward, "Bidirectional Forwarding Detection
>>               (BFD)", RFC 5880, DOI 10.17487/RFC5880, June 2010,
>> --- 534,539 ----
>> 
>> Thanks,
>> Acee
>> 
>>> On Jul 13, 2025, at 10:55 PM, Dongjie (Jimmy) <jie.d...@huawei.com> wrote:
>>> 
>>> Hi Alice, 
>>> 
>>> Thanks a lot for your effort on this document. I've reviewed this update 
>>> and only find one nit:
>>> 
>>> In some places of the document, the reference to BFD points to RFC 5580 by 
>>> mistake, it should be updated to RFC 5880. And in the informative 
>>> references, the reference to RFC5580 can be removed. 
>>> 
>>> Other than this nit, this version is good to me and I approve its 
>>> publication. 
>>> 
>>> Best regards,
>>> Jie
>>> 
>>>> -----Original Message-----
>>>> From: Alice Russo <aru...@staff.rfc-editor.org>
>>>> Sent: Saturday, July 12, 2025 5:37 AM
>>>> To: Acee Lindem <acee.i...@gmail.com>
>>>> Cc: Ketan Talaulikar <ketant.i...@gmail.com>; Keyur Patel
>>>> <ke...@arrcus.com>; gdawra.i...@gmail.com; Shawn Zandi
>>>> <shaf...@shafagh.com>; Dongjie (Jimmy) <jie.d...@huawei.com>;
>>>> lsvr-...@ietf.org; lsvr-cha...@ietf.org; james.n.guichard
>>>> <james.n.guich...@futurewei.com>; auth48archive
>>>> <auth48archive@rfc-editor.org>; RFC Editor <rfc-edi...@rfc-editor.org>
>>>> Subject: Re: AUTH48: RFC-to-be 9816 <draft-ietf-lsvr-applicability-22> for
>>>> your review
>>>> 
>>>> Acee,
>>>> 
>>>> Thank you for your reply; the files have been updated accordingly. Please
>>>> refresh the same URLs as below
>>>> (https://www.rfc-editor.org/authors/rfc9816-lastrfcdiff.html shows only the
>>>> most recent changes).
>>>> 
>>>> RFC Editor/ar
>>>> 
>>>>> On Jul 11, 2025, at 1:06 PM, Acee Lindem <acee.i...@gmail.com> wrote:
>>>>> 
>>>>> Hi Alice,
>>>>> 
>>>>>> On Jul 11, 2025, at 3:48 PM, Alice Russo <aru...@staff.rfc-editor.org>
>>>> wrote:
>>>>>> 
>>>>>> Acee,
>>>>>> 
>>>>>> We have updated the authors' contact information as requested. The
>>>> revised files are here (please refresh):
>>>>>> https://www.rfc-editor.org/authors/rfc9816.html
>>>>>> https://www.rfc-editor.org/authors/rfc9816.txt
>>>>>> https://www.rfc-editor.org/authors/rfc9816.pdf
>>>>>> https://www.rfc-editor.org/authors/rfc9816.xml
>>>>>> 
>>>>>> This diff file shows all changes from the approved I-D:
>>>>>> https://www.rfc-editor.org/authors/rfc9816-diff.html
>>>>>> https://www.rfc-editor.org/authors/rfc9816-rfcdiff.html (side by
>>>>>> side)
>>>>>> 
>>>>>> This diff file shows the changes made during AUTH48 thus far:
>>>>>> https://www.rfc-editor.org/authors/rfc9816-auth48diff.html
>>>>>> https://www.rfc-editor.org/authors/rfc9816-auth48rfcdiff.html (side
>>>>>> by side)
>>>>>> 
>>>>>> This diff file shows only the changes since the last posted version:
>>>>>> https://www.rfc-editor.org/authors/rfc9816-lastrfcdiff.html
>>>>>> 
>>>>>> As mentioned in a separate mail re: 9815, we suggest considering this
>>>> update to the title (remove hyphen and add acronym).
>>>>>> 
>>>>>> -- 9816
>>>>>> Current: Usage and Applicability of BGP Link-State Shortest Path
>>>>>> First (SPF) Routing in Data Centers
>>>>>> Perhaps: Usage and Applicability of BGP Link State (BGP-LS) Shortest
>>>>>> Path First (SPF) Routing in Data Centers
>>>>> 
>>>>> Sure,
>>>>> 
>>>>> Thanks
>>>>> Acee
>>>>> 
>>>>>> 
>>>>>> 
>>>>>> We will wait to hear from you again and from your coauthors before
>>>>>> continuing the publication process. This page shows the AUTH48 status
>>>>>> of your document:
>>>>>> https://www.rfc-editor.org/auth48/rfc9816
>>>>>> 
>>>>>> Thank you.
>>>>>> RFC Editor/ar
>>>>>> 
>>>>>>> On Jul 10, 2025, at 4:17 AM, Acee Lindem <acee.i...@gmail.com> wrote:
>>>>>>> 
>>>>>>> Hi Alice,
>>>>>>> 
>>>>>>>> On Jul 9, 2025, at 3:19 PM, Alice Russo <aru...@staff.rfc-editor.org>
>>>> wrote:
>>>>>>>> 
>>>>>>>> Acee, Ketan (as AD),
>>>>>>>> 
>>>>>>>> *AD - Please review this change and let us know if you approve (changed
>>>> from "MUST" to "must" per Acee's reply to #5).
>>>>>>>> 
>>>>>>>> Original:
>>>>>>>> The Link Local/Remote Identifiers of the peering interfaces MUST be
>>>>>>>> used in the link NLRI as described in section 5.2.2 of
>>>>>>>> [I-D.ietf-lsvr-bgp-spf].
>>>>>>>> 
>>>>>>>> Current:
>>>>>>>> The Link Local/Remote Identifiers of the peering interfaces must be
>>>>>>>> used in the link NLRI as described in Section 5.2.2 of [RFC9815].
>>>>>>> 
>>>>>>> Sure. This is an "Informational" status document.
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Acee,
>>>>>>>> Thank you for your reply. My apologies for the delay. Please see the
>>>> follow-ups below. The revised files are here (please refresh):
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.html
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.txt
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.pdf
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.xml
>>>>>>>> 
>>>>>>>> This diff file shows all changes from the approved I-D:
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816-diff.html
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816-rfcdiff.html (side by
>>>>>>>> side)
>>>>>>>> 
>>>>>>>> This diff file shows the changes made during AUTH48 thus far:
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816-auth48diff.html
>>>>>>>> https://www.rfc-editor.org/authors/rfc9816-auth48rfcdiff.html (side
>>>>>>>> by side)
>>>>>>>> 
>>>>>>>> 
>>>>>>>> Re: #4, we updated to the text you provided except for expanding "SPF",
>>>> as it has already been expanded within the document and is used earlier
>>>> within the same sentence without expansion. If you prefer otherwise, please
>>>> let us know.
>>>>>>>> 
>>>>>>>> FYI, in Section 2, this has been updated as follows; please let us 
>>>>>>>> know if
>>>> you prefer otherwise.
>>>>>>>> Old:   BGP-SPF [RFC9815]
>>>>>>>> New:   BGP-LS SPF [RFC9815]
>>>>>>> 
>>>>>>> Sure - just not BGP - ....
>>>>>>> 
>>>>>>> Thanks,
>>>>>>> Acee
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>>> 
>>>>>>>> 
>>>>>>>> We will wait to hear from you again and from your coauthors before
>>>>>>>> continuing the publication process. This page shows the AUTH48
>>>>>>>> status of your document:
>>>>>>>> https://www.rfc-editor.org/auth48/rfc9816
>>>>>>>> 
>>>>>>>> Thank you.
>>>>>>>> RFC Editor/ar
>>>>>>>> 
>>>>>>>>> On Jul 3, 2025, at 4:58 PM, Acee Lindem <acee.i...@gmail.com>
>>>> wrote:
>>>>>>>>> 
>>>>>>>>> Hi RFC Editor,
>>>>>>>>> 
>>>>>>>>> Thank you for your work on this document.
>>>>>>>>> 
>>>>>>>>>> On Jul 1, 2025, at 2:21 AM, rfc-edi...@rfc-editor.org wrote:
>>>>>>>>>> 
>>>>>>>>>> Authors,
>>>>>>>>>> 
>>>>>>>>>> While reviewing this document during AUTH48, please resolve (as
>>>> necessary) the following questions, which are also in the XML file.
>>>>>>>>>> 
>>>>>>>>>> 1) <!--[rfced] BGP-LS and SPF
>>>>>>>>>> 
>>>>>>>>>> a) Would you like to update the title of the document as shown
>>>>>>>>>> below or otherwise, to more closely match how "BGP-LS" and "SPF"
>>>>>>>>>> are handled in the title of RFC-to-be 9815?
>>>>>>>>>> 
>>>>>>>>>> Original:
>>>>>>>>>> Usage and Applicability of BGP Link-State Shortest Path Routing
>>>>>>>>>> (BGP-SPF) in Data Centers
>>>>>>>>>> 
>>>>>>>>>> Option A:
>>>>>>>>>> Usage and Applicability of BGP Link-State Shortest Path First
>>>>>>>>>> (SPF) Routing in Data Centers
>>>>>>>>> 
>>>>>>>>> Use option A consistent with the base document - "BGP Link-State
>>>> Shortest Path First (SPF) Routing" in RFC 9815.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Option B:
>>>>>>>>>> Usage and Applicability of BGP - Link State (BGP-LS) Shortest
>>>>>>>>>> Path First (SPF) Routing in Data Centers
>>>>>>>>>> 
>>>>>>>>>> b) To match how the companion document expands "BGP-LS" and
>>>>>>>>>> "SPF", may we update the Abstract and Introduction as shown below
>>>>>>>>>> for consistency?
>>>>>>>>>> 
>>>>>>>>>> Original (Abstract):
>>>>>>>>>> This document discusses the usage and applicability of BGP
>>>>>>>>>> Link-State Shortest Path First (BGP-SPF) extensions in data
>>>>>>>>>> center networks utilizing Clos or Fat-Tree topologies.
>>>>>>>>>> 
>>>>>>>>>> Perhaps:
>>>>>>>>>> This document discusses the usage and applicability of BGP - Link
>>>>>>>>>> State
>>>>>>>>>> (BGP-LS) Shortest Path First (SPF) extensions in data center
>>>>>>>>>> networks utilizing Clos or Fat Tree topologies.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> Use;
>>>>>>>>> 
>>>>>>>>> This document discusses the usage and applicability of BGP Link
>>>>>>>>> State
>>>>>>>>> (BGP-LS) Shortest Path First (SPF) extensions in data center
>>>>>>>>> networks utilizing Clos or Fat Tree topologies.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> ...
>>>>>>>>>> Original (Introduction):
>>>>>>>>>> This document complements [I-D.ietf-lsvr-bgp-spf] by discussing
>>>>>>>>>> the applicability of the BGP-SPF technology in a simple and
>>>>>>>>>> fairly common deployment scenario, which is described in Section 3.
>>>>>>>>>> 
>>>>>>>>>> Perhaps:
>>>>>>>>>> This document complements [RFC9815] by discussing the
>>>>>>>>>> applicability of the BGP - Link State (BGP-LS) Shortest Path
>>>>>>>>>> First (SPF) technology in a simple and fairly common deployment
>>>>>>>>>> scenario, which is described in Section 3.
>>>>>>>>> 
>>>>>>>>> Use:
>>>>>>>>> 
>>>>>>>>> This document complements [RFC9815] by discussing the
>>>>>>>>> applicability of the BGP Link State (BGP-LS) Shortest Path First
>>>>>>>>> (SPF) technology in a simple and fairly common deployment
>>>>>>>>> scenario, which is described in Section 3.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> c) Throughout the text, we note "BGP-SPF" vs. "BGP SPF". "BGP
>>>>>>>>>> SPF" is used both in the companion document and the IANA registry
>>>>>>>>>> at <https://www.iana.org/assignments/bgp-spf/>. Would you like to
>>>>>>>>>> update each instance of "BGP-SPF" to "BGP SPF" for consistency?
>>>>>>>>>> See one example below:
>>>>>>>>>> 
>>>>>>>>>> Original:
>>>>>>>>>> The document is intended to provide simplified guidance for the
>>>>>>>>>> deployment of BGP-SPF extensions.
>>>>>>>>>> 
>>>>>>>>>> Perhaps:
>>>>>>>>>> The document is intended to provide simplified guidance for the
>>>>>>>>>> deployment of BGP SPF extensions.
>>>>>>>>> 
>>>>>>>>> Use "BGP SPF" then.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> -->
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 2) <!-- [rfced] Please insert any keywords (beyond those that
>>>>>>>>>> appear in the title) for use on
>>>>>>>>>> https://www.rfc-editor.org/search. -->
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 3) <!-- [rfced] We updated "RFC 5580" to "RFC 5880" in the
>>>>>>>>>> following sentence, and elsewhere in the document where "BFD" is
>>>>>>>>>> referenced, as "BFD" is defined in RFC 5880 and not mentioned in
>>>>>>>>>> RFC 5580. If this is not correct, please let us know.
>>>>>>>>>> 
>>>>>>>>>> Original:
>>>>>>>>>> This document also assumes knowledge of data center routing
>>>>>>>>>> protocols such as BGP [RFC4271], BGP-SPF [I-D.ietf-lsvr-bgp-spf],
>>>>>>>>>> OSPF [RFC2328] [RFC5340], as well as data center Operations,
>>>>>>>>>> Administration, and Maintenance (OAM) protocols like Link Layer
>>>>>>>>>> Discovery Protocol (LLDP) [RFC4957] and Bi- Directional
>>>>>>>>>> Forwarding Detection (BFD) [RFC5580].
>>>>>>>>>> 
>>>>>>>>>> Current:
>>>>>>>>>> This document also assumes knowledge of data center routing
>>>>>>>>>> protocols such as BGP [RFC4271], BGP-SPF [RFC9815], and OSPF
>>>>>>>>>> [RFC2328] [RFC5340] as well as data center Operations,
>>>>>>>>>> Administration, and Maintenance (OAM) protocols like the Link
>>>>>>>>>> Layer Discovery Protocol (LLDP) [RFC4957] and Bidirectional
>>>>>>>>>> Forwarding Detection (BFD) [RFC5580].
>>>>>>>>>> -->
>>>>>>>>> 
>>>>>>>>> Sure - good catch.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 4) <!--[rfced] "SPF" is not mentioned in RFC 9552. Should a
>>>>>>>>>> different RFC be referenced or was "OSPF" perhaps intended?
>>>>>>>>>> 
>>>>>>>>>> Original:
>>>>>>>>>> The BGP-SPF modifications allow BGP to overcome these limitations.
>>>>>>>>>> Furthermore, using the BGP-LS Network Layer Reachability
>>>>>>>>>> Information
>>>>>>>>>> (NLRI) format allows the BGP-SPF data to be advertised for nodes,
>>>>>>>>>> links, and prefixes in the BGP routing domain and used for Short-
>>>>>>>>>> Path-First (SPF) computations [RFC9552].
>>>>>>>>>> -->
>>>>>>>>> 
>>>>>>>>> Use:
>>>>>>>>> 
>>>>>>>>> The BGP-SPF modifications allow BGP to overcome these limitations.
>>>>>>>>> Furthermore, using the BGP-LS Network Layer Reachability
>>>>>>>>> Information
>>>>>>>>> (NLRI) format [RFC9552] allows the BGP-SPF data to be advertised
>>>>>>>>> for nodes, links, and prefixes in the BGP routing domain and used
>>>>>>>>> for Short- Path-First (SPF) computations.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 5) <!-- [rfced] We see that the approved I-D (v22) contains one
>>>>>>>>>> instance of a keyword ("MUST" in Section 5.5.1). Is this
>>>>>>>>>> intentional? If so, we will add the typical paragraph from BCP 14
>>>>>>>>>> regarding use of keywords after the Introduction and add RFCs
>>>>>>>>>> 2119 and 8174 to the Normative References section. Otherwise, we
>>>>>>>>>> will update "MUST" to "must".
>>>>>>>>>> 
>>>>>>>>>> Original:
>>>>>>>>>> The Link Local/Remote Identifiers of the peering interfaces MUST
>>>>>>>>>> be used in the link NLRI as described in section 5.2.2 of
>>>>>>>>>> [I-D.ietf-lsvr-bgp-spf].
>>>>>>>>>> -->
>>>>>>>>> 
>>>>>>>>> Please change to "must" for BCP.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 6) <!--[rfced] Is "BGP-LS SPF Topology" correct or should it
>>>>>>>>>> perhaps be "BGP-LS-SPF Topology" for consistency?
>>>>>>>>>> 
>>>>>>>>>> Original:
>>>>>>>>>> 5.5.2  BGP-LS SPF Topology Visibility for Management
>>>>>>>>>> 
>>>>>>>>>> Perhaps:
>>>>>>>>>> 5.5.2  BGP-LS-SPF Topology Visibility for Management
>>>>>>>>>> -->
>>>>>>>>> 
>>>>>>>>> Ok.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 7) <!--[rfced] Would repeating "Non" make this section title more
>>>> clear?
>>>>>>>>>> The meaning seems to be applicability to topologies that are
>>>>>>>>>> neither Clos nor Fat Tree topologies.
>>>>>>>>>> 
>>>>>>>>>> Original:
>>>>>>>>>> 6.  Non-CLOS/FAT Tree Topology Applicability
>>>>>>>>>> 
>>>>>>>>>> Current:
>>>>>>>>>> 6.  Non-Clos / Fat Tree Topology Applicability
>>>>>>>>>> 
>>>>>>>>>> Perhaps:
>>>>>>>>>> 6.  Non-Clos / Non-Fat-Tree Topology Applicability
>>>>>>>>>> -->
>>>>>>>>> 
>>>>>>>>> Leave as:
>>>>>>>>> 6.  Non-Clos / Fat Tree Topology Applicability
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 8) <!-- [rfced] FYI - We updated the following terms for
>>>>>>>>>> consistency. Please let us know of any objections.
>>>>>>>>>> 
>>>>>>>>>> BGP-LS Node NLRI Attribute SPF Status TLV -> BGP-LS-SPF Node NLRI
>>>>>>>>>> Attribute SPF Status TLV (per the companion doc) BGP-LS SPF SAFI
>>>>>>>>>> -> BGP-LS-SPF SAFI (per the companion doc) Clos Topologies ->
>>>>>>>>>> Clos topologies Fat-Tree -> Fat Tree (per use in the RFC Series)
>>>>>>>>>> link NLRI -> Link NLRI (per RFC 9552) Route Controllers -> route
>>>>>>>>>> controllers (per companion document) Route Reflectors -> route
>>>>>>>>>> reflectors (per companion document) Spine Nodes -> spine nodes
>>>>>>>>>> Unicast -> unicast
>>>>>>>>>> -->
>>>>>>>>> 
>>>>>>>>> Ok.
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 9) <!-- [rfced] FYI - We have updated the expansions for the 
>>>>>>>>>> following
>>>>>>>>>> abbreviations to reflect the form on the right for consistency with
>>>>>>>>>> the companion document and/or RFC Series.
>>>>>>>>>> 
>>>>>>>>>> Bi-Directional Forwarding Detection (BFD) ->
>>>>>>>>>> Bidirectional Forwarding Detection (BFD)
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>> Ok.
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Equal-Cost Multi-Path (ECMP) -> Equal-Cost Multipath (ECMP)
>>>>>>>>> 
>>>>>>>>> Ok.
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Top-Of-Rack (ToR) -> Top-of-Rack (ToR)
>>>>>>>>> 
>>>>>>>>> Ok.
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> -->
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 10) <!-- [rfced] Please review the "Inclusive Language" portion of 
>>>>>>>>>> the
>>>> online
>>>>>>>>>> Style Guide
>>>> <https://www.rfc-editor.org/styleguide/part2/#inclusive_language>
>>>>>>>>>> and let us know if any changes are needed.  Updates of this nature
>>>> typically
>>>>>>>>>> result in more precise language, which is helpful for readers.
>>>>>>>>>> 
>>>>>>>>>> For example, please consider whether the following should be
>>>> updated:
>>>>>>>>>> - blackhole
>>>>>>>>> 
>>>>>>>>> Replace "blackhole" with "routes to unreachable destinations".
>>>>>>>>> 
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> In addition, please consider whether "traditional" should be updated
>>>>>>>>>> for clarity.  While the NIST website
>>>>>>>>>> 
>>>> <https://web.archive.org/web/20250214092458/https://www.nist.gov/
>>>>>>>>>> 
>>>> nist-research-library/nist-technical-series-publications-author-instructions#ta
>>>> ble1>
>>>>>>>>>> indicates that this term is potentially biased, it is also ambiguous.
>>>>>>>>>> "Tradition" is a subjective term, as it is not the same for everyone.
>>>>>>>>>> -->
>>>>>>>>> 
>>>>>>>>> "usual BGP underlays" and "classical BGP routing".
>>>>>>>>> 
>>>>>>>>> Please update my contact information with a new affiliation:
>>>>>>>>> 
>>>>>>>>> Acee Lindem
>>>>>>>>> Arrcus, Inc.
>>>>>>>>> 301 Midenhall Way
>>>>>>>>> Cary, NC 27513
>>>>>>>>> United States of America
>>>>>>>>> Email: acee.i...@gmail.com
>>>>>>>>> 
>>>>>>>>> Thanks,
>>>>>>>>> Acee
>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Thank you.
>>>>>>>>>> 
>>>>>>>>>> RFC Editor/kc/ar
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> On Jun 30, 2025, rfc-edi...@rfc-editor.org wrote:
>>>>>>>>>> 
>>>>>>>>>> *****IMPORTANT*****
>>>>>>>>>> 
>>>>>>>>>> Updated 2025/06/30
>>>>>>>>>> 
>>>>>>>>>> RFC Author(s):
>>>>>>>>>> --------------
>>>>>>>>>> 
>>>>>>>>>> Instructions for Completing AUTH48
>>>>>>>>>> 
>>>>>>>>>> Your document has now entered AUTH48.  Once it has been
>>>> reviewed and
>>>>>>>>>> approved by you and all coauthors, it will be published as an RFC.
>>>>>>>>>> If an author is no longer available, there are several remedies
>>>>>>>>>> available as listed in the FAQ (https://www.rfc-editor.org/faq/).
>>>>>>>>>> 
>>>>>>>>>> You and you coauthors are responsible for engaging other parties
>>>>>>>>>> (e.g., Contributors or Working Group) as necessary before providing
>>>>>>>>>> your approval.
>>>>>>>>>> 
>>>>>>>>>> Planning your review
>>>>>>>>>> ---------------------
>>>>>>>>>> 
>>>>>>>>>> Please review the following aspects of your document:
>>>>>>>>>> 
>>>>>>>>>> *  RFC Editor questions
>>>>>>>>>> 
>>>>>>>>>> Please review and resolve any questions raised by the RFC Editor
>>>>>>>>>> that have been included in the XML file as comments marked as
>>>>>>>>>> follows:
>>>>>>>>>> 
>>>>>>>>>> <!-- [rfced] ... -->
>>>>>>>>>> 
>>>>>>>>>> These questions will also be sent in a subsequent email.
>>>>>>>>>> 
>>>>>>>>>> *  Changes submitted by coauthors
>>>>>>>>>> 
>>>>>>>>>> Please ensure that you review any changes submitted by your
>>>>>>>>>> coauthors.  We assume that if you do not speak up that you
>>>>>>>>>> agree to changes submitted by your coauthors.
>>>>>>>>>> 
>>>>>>>>>> *  Content
>>>>>>>>>> 
>>>>>>>>>> Please review the full content of the document, as this cannot
>>>>>>>>>> change once the RFC is published.  Please pay particular attention 
>>>>>>>>>> to:
>>>>>>>>>> - IANA considerations updates (if applicable)
>>>>>>>>>> - contact information
>>>>>>>>>> - references
>>>>>>>>>> 
>>>>>>>>>> *  Copyright notices and legends
>>>>>>>>>> 
>>>>>>>>>> Please review the copyright notice and legends as defined in
>>>>>>>>>> RFC 5378 and the Trust Legal Provisions
>>>>>>>>>> (TLP – https://trustee.ietf.org/license-info).
>>>>>>>>>> 
>>>>>>>>>> *  Semantic markup
>>>>>>>>>> 
>>>>>>>>>> Please review the markup in the XML file to ensure that elements of
>>>>>>>>>> content are correctly tagged.  For example, ensure that
>>>> <sourcecode>
>>>>>>>>>> and <artwork> are set correctly.  See details at
>>>>>>>>>> <https://authors.ietf.org/rfcxml-vocabulary>.
>>>>>>>>>> 
>>>>>>>>>> *  Formatted output
>>>>>>>>>> 
>>>>>>>>>> Please review the PDF, HTML, and TXT files to ensure that the
>>>>>>>>>> formatted output, as generated from the markup in the XML file, is
>>>>>>>>>> reasonable.  Please note that the TXT will have formatting
>>>>>>>>>> limitations compared to the PDF and HTML.
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Submitting changes
>>>>>>>>>> ------------------
>>>>>>>>>> 
>>>>>>>>>> To submit changes, please reply to this email using ‘REPLY ALL’ as 
>>>>>>>>>> all
>>>>>>>>>> the parties CCed on this message need to see your changes. The
>>>> parties
>>>>>>>>>> include:
>>>>>>>>>> 
>>>>>>>>>> *  your coauthors
>>>>>>>>>> 
>>>>>>>>>> *  rfc-edi...@rfc-editor.org (the RPC team)
>>>>>>>>>> 
>>>>>>>>>> *  other document participants, depending on the stream (e.g.,
>>>>>>>>>> IETF Stream participants are your working group chairs, the
>>>>>>>>>> responsible ADs, and the document shepherd).
>>>>>>>>>> 
>>>>>>>>>> *  auth48archive@rfc-editor.org, which is a new archival mailing list
>>>>>>>>>> to preserve AUTH48 conversations; it is not an active discussion
>>>>>>>>>> list:
>>>>>>>>>> 
>>>>>>>>>> *  More info:
>>>>>>>>>> 
>>>> https://mailarchive.ietf.org/arch/msg/ietf-announce/yb6lpIGh-4Q9l2USxIAe
>>>> 6P8O4Zc
>>>>>>>>>> 
>>>>>>>>>> *  The archive itself:
>>>>>>>>>> https://mailarchive.ietf.org/arch/browse/auth48archive/
>>>>>>>>>> 
>>>>>>>>>> *  Note: If only absolutely necessary, you may temporarily opt out
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>>>>>>>>>> You may submit your changes in one of two ways:
>>>>>>>>>> 
>>>>>>>>>> An update to the provided XML file
>>>>>>>>>> — OR —
>>>>>>>>>> An explicit list of changes in this format
>>>>>>>>>> 
>>>>>>>>>> Section # (or indicate Global)
>>>>>>>>>> 
>>>>>>>>>> OLD:
>>>>>>>>>> old text
>>>>>>>>>> 
>>>>>>>>>> NEW:
>>>>>>>>>> new text
>>>>>>>>>> 
>>>>>>>>>> You do not need to reply with both an updated XML file and an
>>>> explicit
>>>>>>>>>> list of changes, as either form is sufficient.
>>>>>>>>>> 
>>>>>>>>>> We will ask a stream manager to review and approve any changes
>>>> that seem
>>>>>>>>>> beyond editorial in nature, e.g., addition of new text, deletion of 
>>>>>>>>>> text,
>>>>>>>>>> and technical changes.  Information about stream managers can be
>>>> found in
>>>>>>>>>> the FAQ.  Editorial changes do not require approval from a stream
>>>> manager.
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Approving for publication
>>>>>>>>>> --------------------------
>>>>>>>>>> 
>>>>>>>>>> To approve your RFC for publication, please reply to this email 
>>>>>>>>>> stating
>>>>>>>>>> that you approve this RFC for publication.  Please use ‘REPLY ALL’,
>>>>>>>>>> as all the parties CCed on this message need to see your approval.
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Files
>>>>>>>>>> -----
>>>>>>>>>> 
>>>>>>>>>> The files are available here:
>>>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.xml
>>>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.html
>>>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.pdf
>>>>>>>>>> https://www.rfc-editor.org/authors/rfc9816.txt
>>>>>>>>>> 
>>>>>>>>>> Diff file of the text:
>>>>>>>>>> https://www.rfc-editor.org/authors/rfc9816-diff.html
>>>>>>>>>> https://www.rfc-editor.org/authors/rfc9816-rfcdiff.html (side by 
>>>>>>>>>> side)
>>>>>>>>>> 
>>>>>>>>>> Diff of the XML:
>>>>>>>>>> https://www.rfc-editor.org/authors/rfc9816-xmldiff1.html
>>>>>>>>>> 
>>>>>>>>>> 
>>>>>>>>>> Tracking progress
>>>>>>>>>> -----------------
>>>>>>>>>> 
>>>>>>>>>> The details of the AUTH48 status of your document are here:
>>>>>>>>>> https://www.rfc-editor.org/auth48/rfc9816
>>>>>>>>>> 
>>>>>>>>>> Please let us know if you have any questions.
>>>>>>>>>> 
>>>>>>>>>> Thank you for your cooperation,
>>>>>>>>>> 
>>>>>>>>>> RFC Editor
>>>>>>>>>> 
>>>>>>>>>> --------------------------------------
>>>>>>>>>> RFC9816 (draft-ietf-lsvr-applicability-22)
>>>>>>>>>> 
>>>>>>>>>> Title            : Usage and Applicability of BGP Link-State Shortest
>>>> Path Routing (BGP-SPF) in Data Centers
>>>>>>>>>> Author(s)        : K. Patel, A. Lindem, S. Zandi, G. Dawra, J. Dong
>>>>>>>>>> WG Chair(s)      : Jie Dong, Acee Lindem
>>>>>>>>>> Area Director(s) : Jim Guichard, Ketan Talaulikar, Gunter Van de 
>>>>>>>>>> Velde
>>>>>>>>> 
>>>>>>>> 
>>>>>>> 
>>>>>> 
>>>>> 
>>> 
>> 
> 

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