Hi Roman,

An update with this text (plus changes to address comments from other ADs)
has now been posted:
https://www.ietf.org/archive/id/draft-ietf-pce-circuit-style-pcep-extensions-15.html

Can you please review and let us know if this addresses your DISCUSS &
comments?

Thanks,
Ketan


On Wed, Mar 4, 2026 at 6:30 PM Samuel Sidor (ssidor) <ssidor=
[email protected]> wrote:

> Hi Roman,
>
> Please see responses inline <S>.
>
> Thanks,
> Samuel
>
> *From: *Roman Danyliw via Datatracker <[email protected]>
> *Date: *Tuesday, 3 March 2026 at 23:20
> *To: *The IESG <[email protected]>
> *Cc: *[email protected] <[email protected]>,
> [email protected] <
> [email protected]>,
> [email protected] <[email protected]>, [email protected] <[email protected]>
> *Subject: *Roman Danyliw's Discuss on
> draft-ietf-pce-circuit-style-pcep-extensions-14: (with DISCUSS and COMMENT)
>
> Roman Danyliw has entered the following ballot position for
> draft-ietf-pce-circuit-style-pcep-extensions-14: Discuss
>
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> Please refer to
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> for more information about how to handle DISCUSS and COMMENT positions.
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> The document, along with other ballot positions, can be found here:
>
> https://datatracker.ietf.org/doc/draft-ietf-pce-circuit-style-pcep-extensions/
>
>
>
> ----------------------------------------------------------------------
> DISCUSS:
> ----------------------------------------------------------------------
>
> ** Section 5.2
>
> 5.2.  Information and Data Models
>    An implementation SHOULD allow an operator to view the PCEP peer
>    capability defined in this document.  Section 4.1 and 4.1.1 of
>    [RFC9826] should be extended to include that capability for PCEP
>    peer.
>    Section 4.2 of [RFC9826] module SHOULD be extended to add
>    notification for blocked path modification that satisfies specified
>    constraints if path modification is blocked using the PATH-
>    MODIFICATION TLV.
>
> -- Per “Section 4.1 and 4.1.1 of [RFC9826] should be extended to include
> that
> capability for PCEP peer”, who is this guidance for?  What does it mean to
> say
> that a given section of an RFC “should be extended”?  Is this extended the
> model in RFC9826?
>
> <S> The guidance was mostly for other PCE IETF drafts, which will
> extend/augment Yang model introduced as part of RFC9826 (possibly
> draft-ietf-pce-pcep-srv6-yang, but it can be other draft as well in the
> future). My understanding is that we are following similar approach in
> other PCEP RFCs.
>
> Would following updated text work for you?
>
>    An implementation SHOULD allow an operator to view the PCEP peer
>    capability defined in this document.  A YANG data model specification
>    augmenting the model defined in Sections 4.1 and 4.1.1 of [RFC9826]
>    SHOULD include that capability for the PCEP peer.
>
>
> -- Per “Section 4.2 of [RFC9826] module SHOULD be extended to add
> notification
> for blocked path modification that satisfies specified constraints if path
> modification is blocked using the PATH-MODIFICATION TLV”, same questions.
> Additionally, this text says the "module SHOULD be extended", upper case
> "SHOULD", does that mean anything different than the lower case in the
> previous
> sentence?
>
> <S> Similar to above. Updated text (also with solved inconsistency for
> “SHOULD”):
>
>    A YANG data model specification augmenting the module defined in
>    Section 4.2 of [RFC9826] SHOULD add a notification for blocked path
>    modification that satisfies specified constraints if path
>    modification is blocked using the PATH-MODIFICATION TLV.
>
>
>
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
>
> ** Section 5.4
>    A PCE implementation SHOULD notify the operator in case of blocked
>    path modification for an LSP that no longer satisfies specified
>    constraints.  It SHOULD also allow the operator to view LSPs on the
>    PCE that does not satisfy specified constraints.
>
> Is there some interoperable way that the operator should be notified?
>
> Is there some interoperable way about how an operator should “view LSPs”?
>
> <S> That text was mostly pointing to notification described in section 5.2
> (so Yang model augmentation, which is supposed to be interoperable). Is
> following text better?
>
>    A PCE implementation SHOULD allow the operator to monitor LSPs for
>    which the PCE has determined that the current path no longer
>    satisfies the specified constraints but path modification is blocked
>    by the PATH-MODIFICATION TLV, for example via YANG notifications or
>    the YANG data model described in Section 5.2.
>
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