+ netmod WG, and YANG Drs.
Widening scope to gather more opinions.

So far, we have some opinions that are proto adding such IANA managed modules.
However, thers have raised concerns at transferring full ownership/control to 
IANA --  especially when mapping from IANA Identifiers to string based YANG 
identityref is required.
We are also aware of a proposal in netmod in 
draft-boucadair-netmod-iana-registries – we are wondering if we have further 
input that will help YANG document authors moving forward.

Regards,
Tarek

From: Tarek Saad <[email protected]>
Date: Friday, May 13, 2022 at 1:59 PM
To: [email protected] <[email protected]>
Cc: Adrian Farrel <[email protected]>
Subject: IANA managed modules for TE object types
Hi WG,

During the review of draft-ietf-teas-yang-te, Adrian raised an important point 
about IANA managing some YANG module that models specific TE types. For 
example, ID draft-ietf-teas-yang-te was modelling ‘no-path’ some error reasons 
as listed in 
https://www.iana.org/assignments/pcep/pcep.xhtml#no-path-vector-tlv or 
association types as defined in  
https://www.iana.org/assignments/pcep/pcep.xhtml#association-type-field.

There are obvious advantages to having such YANG types in separate modules and 
letting IANA manage them. For example,

  1.  Other TE modules can freely import such types modules (without needing to 
import feature modules such as one defined in draft-ietf-teas-yang-te).
  2.  Allowing IANA to manage these modules may facilitate extensions in the 
future (IANA can automatically ensure that IANA types and YANG module are in 
sync).

The authors discussed this suggestion and would like to proceed with it, but 
want to make sure this is the recommended approach for other types that are 
managed by IANA and may be modelled in YANG in the future.

Regards,
Tarek (for the co-authors of draft-ietf-teas-yang-te)

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