Mohamed Boucadair has entered the following ballot position for
draft-ietf-lsr-ospf-ls-link-infinity-19: Discuss

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DISCUSS:
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Hi Liyan, Weiqiang, Changwang, Acee, and Ran,

Thank you for the effort put into this specification. Special thanks for the
detailed Operational Considerations section. The approach in this draft is
consistent with draft-iab-nemops-workshop-report, especially this part:

   *  Consider having YANG as part of the protocol specification/change
      where possible, or have the YANG document progress in parallel.

Thanks also to Dhruv Dhody for the great OPSDIR review and to authors for
positively engaging and making relevant changes.

I have already reviewed a previous version of this specification. Thanks to the
authors for having addressed that review:
https://mailarchive.ietf.org/arch/msg/ops-dir/uS3e3-HJVS1_PmDyySa9Im5-y3E/.

Please find below some comments based on the latest version. Let me know if any
help is needed.

# IETF Last Call comments

Unless I’m mistaken, there was no follow up to this review:
https://mailarchive.ietf.org/arch/msg/last-call/kKh1DX7mc3l40GX_6lDB8Ab6ty0/
Was that missed or that the points raised there are not issues?

# Flex-Algorithm SPF

CURRENT:
   This applies to both the
   Flex-Algorithm SPF and the base SPF as long as LSLinkInfinity is
   specified for the OSPF metric.

and

   This applies to both the Flex-Algorithm SPF and the base SPF as long
   as LSLinkInfinity is specified for the OSPF metric.

We don’t have any normative reference for Flex-Algorithm SPF in the doc. Can we
please add one? Thanks.

# IANA-maintained module

Thanks for adopting this design. However, we need to make sure the module is
not kept in the final RFC per the following in RFC8704bis:

   The authors MUST include a note to the RFC
   Editor requesting that the appendix with the initial version of the
   module be removed before publication as RFC and that RFC IIII is
   replaced with the RFC number that is assigned to the document.

I suggest we make this change:

OLD:
   This document defines the initial version of the IANA-maintained YANG
   module for OSPF Router Functional Capabilities that mirrors the IANA
   "OSPF Router Functional Capability Bits" registry
   [IANA-OSPF-FC-Bits].

NEW:

   This document defines the initial version of the IANA-maintained YANG
   module for OSPF Router Functional Capabilities that mirrors the IANA
   "OSPF Router Functional Capability Bits" registry
   [IANA-OSPF-FC-Bits]. The latest version of this YANG module is available at
   IANA_URL.

   Note to the RFC Editor: Please remove this module in the version to be
   published as RFC.

# IANA Module for OSPF Functional Capability Bits

## Mismatch between the registry name and the identifier

I suggest you fix this as follows:

OLD:
   registry, a new "identity" statement needs to be added to the "iana-
   ospf-functional-cap-bits" YANG module.  The name of the "identity"
   MUST be the name as provided in the registry.

NEW:
   registry, a new "identity" statement needs to be added to the "iana-
   ospf-functional-cap-bits" YANG module.  The name of the "identity"
   is the lower-case name provided in the registry with all spaces replaced
   with “-“.

## Description

CURRENT:
     "description":   Replicates the description from the registry.

There is no such field in the registry. I think this should be capability name.

## Default

I suggest to delete this text as these actions correspond to the normal IANA
operations

CURRENT:
   When the "iana-ospf-functional-cap-bits" YANG module is updated, a
   new "revision" statement with a unique revision date must be added in
   front of the existing revision statements.  The "revision" statement
   MUST contain both "description" and "reference" substatements as
   follows.

   The "description" substatement captures what changed in the revised
   version.  Typically, the description enumerates the changes such as
   udpates to existing entries (e.g., update a description or a
   reference) or notes which identities were added or had their status
   changed (e.g., deprecated, discouraged, or obsoleted).

   The "reference" substatement points specifically to the published
   module (i.e., IANA_FOO_URL_With_REV).  It may also point to an
   authoritative event triggering the update to the YANG module.  In all
   cases, this event is cited from the underlying IANA registry.  If the
   update is triggered by an RFC, that RFC must also be included in the
   "reference" substatement.

# Normative references

CURRENT:
   Updates: 5443, 6987, 8770 (if approved)                     China Mobile

However, these are listed as informative. Please move RFC5443, RFC6987, and
RFC8770 to be listed as normative.


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COMMENT:
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# No need to motivate YANG

I would delete this text in Section 4.2:

   YANG [RFC7950] is a data definition language used to define the
   contents of a conceptual data store that allows networked devices to
   be managed using NETCONF [RFC6241] or RESTCONF [RFC8040].

Also, this is restrictive as other non-IETF protocols are available out there.

# Two modules

I’m really neutral on this but I’m curious whether there is any reason modules
in 4.2.4. and 4.2.5. are not covered in the same module?

If you decide to keep them separate, consider adding a note to motivate the
design.

# References

Please move RFC6241 and RFC8040 from Normative to Informative.

Cheers,
Med



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