Re: [I2nsf] [yang-doctors] Yangdoctors last call review of draft-ietf-i2nsf-capability-data-model-04
Carl Moberg <calle@tail-f.com> Wed, 27 November 2019 13:37 UTC
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From: Carl Moberg <calle@tail-f.com>
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Date: Wed, 27 Nov 2019 14:37:09 +0100
Cc: "i2nsf@ietf.org" <i2nsf@ietf.org>, YANG Doctors <yang-doctors@ietf.org>, draft-ietf-i2nsf-capability-data-model.all@ietf.org
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Subject: Re: [I2nsf] [yang-doctors] Yangdoctors last call review of draft-ietf-i2nsf-capability-data-model-04
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Paul, Yes! Updated and done. > On 26 Nov 2019, at 13:52, Mr. Jaehoon Paul Jeong <jaehoon.paul@gmail.com> wrote: > > Hi Carl, > Did you have a change to check our revision for I2NSF Capability Draft? > > Thanks. > > Best Regards, > Paul > > On Wed, Nov 6, 2019 at 10:56 AM Mr. Jaehoon Paul Jeong <jaehoon.paul@gmail.com> wrote: > Hi Carl, > I believe that I have addressed your comments on I2NSF Capability Data Model: > https://tools.ietf.org/html/draft-ietf-i2nsf-capability-data-model-05 > > If you are satisfied with the revision, could you update the Review result in the following page? > https://datatracker.ietf.org/doc/review-ietf-i2nsf-capability-data-model-04-yangdoctors-lc-moberg-2019-07-15/ > > Thanks. > > Best Regards, > Paul > > On Thu, Jul 25, 2019 at 11:29 PM Mr. Jaehoon Paul Jeong <jaehoon.paul@gmail.com> wrote: > Hi Carl, > Here is the revision letter for the revised draft, reflecting your comments along with the revised draft: > https://tools.ietf.org/html/draft-ietf-i2nsf-capability-data-model-05 > > This revision letter first addresses the comments from Acee and then > addresses your comments from page 6. > > If you have further comments and questions, please let me know. > > Thanks. > > Best Regards, > Paul > > On Mon, Jul 15, 2019 at 6:50 PM Carl Moberg via Datatracker <noreply@ietf.org> wrote: > Reviewer: Carl Moberg > Review result: Almost Ready > > This is my review of the ietf-i2nsf-capability@2019-03-28.yang module as part > of draft-ietf-i2nsf-capability-data-model-04. > > The module cleanly passes validation (i.e. 'pyang --ietf') and I have been able > to load it into a NETCONF server and done basic operations on it (add, query > for and remove capabilties). > > I have one high-level concern and a couple of nits. > > This document defines "a YANG data model for capabilities of various Network > Security Functions (NSFs)". After my in initial reading of the draft and I2RS > background material I found it hard to understand which of the components in > the I2RS reference architecture that would implement the YANG module (i.e. > provide NETCONF or RESTCONF protocol implementations). The draft says the > following: > > """ > This document provides a data model using YANG [RFC6020][RFC7950] > that defines the capabilities of NSFs to centrally manage > capabilities of those security devices. The security devices can > register their own capabilities into Network Operator Management > (Mgmt) Systems (i.e., Security Controllers) with this YANG data model > through the registration interface [RFC8329]. > """ > > This seems to point in the direction of the 'Network Operator Managemen (Mgmt) > Systems' as the location of the YANG datastore, i.e. where this module would be > implemented. > > My main question then becomes; given the fact that the top-level element of the > data model is a container ('nsf') with a set of leaf-lists and containers under > it, this model seems to only allow for the registration of one (1) single NSF. > This seems to be also supported by the language of the description clauses > referencing "network service function" in singular. > > I would intuitively expect such a registry to be able to store the capabilities > of a multitude of NSFs. I would appreciate if the authors could clarify the > intent and expected usage of the model based on this question. > > Given my initial struggles I would suggest adding clearer upfront language on > the location of the module and the addition of usage examples of e.g. NSFs > registering capability instances to registry. (See > https://tools.ietf.org/html/rfc8407#section-3.12). I believe that would provide > additional and helpful context to the usage of the model. > > The following drafts are referenced in 'reference' and 'description' fields in > the YANG module, but are missing from the Informative References section of the > draft. (See https://tools.ietf.org/html/rfc8407#appendix-A.) - > draft-hong-i2nsf-nsf-monitoring-data-model-06 - draft-ietf-i2nsf-capability-04 > - draft-dong-i2nsf-asf-config-01 > > The modules consistently seem to spell out 'capabilities', but shorten > 'capability' to 'capa', e.g.: > > +--rw condition-capabilities > | +--rw generic-nsf-capabilities > | | +--rw ipv4-capa* identityref > > I would suggest following https://tools.ietf.org/html/rfc8407#section-4.3.1 and > spell out 'capability' unless the authors are of the opinion that 'capa' is a > well known abbreviation. > > Remove the following references (they're not used): > > [RFC6087] Bierman, A., "Guidelines for Authors and Reviewers of YANG > Data Model Documents", RFC 6087, DOI 10.17487/RFC6087, > January 2011, <https://www.rfc-editor.org/info/rfc6087>. > > [RFC6991] Schoenwaelder, J., Ed., "Common YANG Data Types", > RFC 6991, DOI 10.17487/RFC6991, July 2013, > <https://www.rfc-editor.org/info/rfc6991>. > > The format used to reference drafts vary in format, some use the 'ietf-draft' > prefix in the reference (e.g. '[draft-ietf-i2nsf-sdn-ipsec-flow-protection]') > and some don't (e.g. '[i2nsf-advanced-nsf-dm]') > > Oh. and it looks like the email address of the WG Chair (no less! :-) is > spelled incorrectly: > > OLD: > WG Chair: Linda Dunbar > <mailto:Linda.duhbar@huawei.com> > > NEW: > WG Chair: Linda Dunbar > <mailto:Linda.dunbar@huawei.com> > > _______________________________________________ > I2nsf mailing list > I2nsf@ietf.org > https://www.ietf.org/mailman/listinfo/i2nsf > > > -- > =========================== > Mr. Jaehoon (Paul) Jeong, Ph.D. > Associate Professor > Department of Software > Sungkyunkwan University > Office: +82-31-299-4957 > Email: jaehoon.paul@gmail.com, pauljeong@skku.edu > Personal Homepage: http://iotlab.skku.edu/people-jaehoon-jeong.php > > > -- > =========================== > Mr. Jaehoon (Paul) Jeong, Ph.D. > Associate Professor > Department of Software > Sungkyunkwan University > Office: +82-31-299-4957 > Email: jaehoon.paul@gmail.com, pauljeong@skku.edu > Personal Homepage: http://iotlab.skku.edu/people-jaehoon-jeong.php > > > -- > =========================== > Mr. Jaehoon (Paul) Jeong, Ph.D. > Associate Professor > Department of Software > Sungkyunkwan University > Office: +82-31-299-4957 > Email: jaehoon.paul@gmail.com, pauljeong@skku.edu > Personal Homepage: http://iotlab.skku.edu/people-jaehoon-jeong.php > _______________________________________________ > yang-doctors mailing list > yang-doctors@ietf.org > https://www.ietf.org/mailman/listinfo/yang-doctors
- [I2nsf] Yangdoctors last call review of draft-iet… Carl Moberg via Datatracker
- Re: [I2nsf] [yang-doctors] Yangdoctors last call … Mahesh Jethanandani
- Re: [I2nsf] Yangdoctors last call review of draft… Mr. Jaehoon Paul Jeong
- Re: [I2nsf] Yangdoctors last call review of draft… Mr. Jaehoon Paul Jeong
- Re: [I2nsf] Yangdoctors last call review of draft… Mr. Jaehoon Paul Jeong
- Re: [I2nsf] [yang-doctors] Yangdoctors last call … Carl Moberg
- Re: [I2nsf] [yang-doctors] Yangdoctors last call … Mr. Jaehoon Paul Jeong