Early Review of draft-ietf-tvr-schedule-yang-05
review-ietf-tvr-schedule-yang-05-opsdir-early-xie-2025-12-03-00

Hi all，

I have been selected as the Operational Directorate (opsdir) reviewer for this
Internet-Draft.

- Document: [draft-ietf-tvr-schedule-yang-05]

- Reviewer: [Chongfeng Xie]

- Review Date: [December 03, 2025]

- Intended Status: [Standards Track]

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## Summary

- Has Issues: I have some minor concerns about this document that I think
should be resolved before publication.

## Major Issues

- For a document that will become a standard in the future, a section of
"Operational considerations" following RFC5706bis can be added, it will help
operators to understand on how to use the three modules.

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## Minor Issues

- Three modules (ietf-tvr-schedule.yang, ietf-tvr-topology.yang,
ietf-tvr-node.yang) have been defined in this document, it is recommended to
introduce the relationship between these three modules in section 1 or or other
places.

- Section 3.1 mainly introduces TVR Schedule, so I suggest that the title of
section 3.1 can be changed to "TVR Schedule Definitions",  since schedule has
been illustrated in other documents, such as draft-ietf-netmod-schedule-yang.

- In section 3.3, there is "Delay is the link propagation time and does not
include any queuing delays. ", I wonder how to get the value of delay, does it
depend on calculating the length of the underlying physical link?

- This draft has three appendixes (Appendix A, Appendix B, Appendix C). It is
recommended to cite these appendixes in the relevant sections of the body, so
as to show the relationship between the appendixes and the relevant content in
the body.

- The following sentence in section 5 looks redundent，it can be removed,
       "The following RFCs are not referenced in the document text but are
       referenced in the ... modules: [RFC6991]."

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## Nits

- No nits found.

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Best regards
Chongfeng