Re: [Last-Call] [netmod] Last Call: <draft-ietf-netmod-nmda-diff-09.txt> (Comparison of NMDA datastores) to Proposed Standard

"Cumming, James (Nokia - US)" <james.cumming@xxxxxxxxx> · Thu, 24 Jun 2021 19:13:12 +0000

Hi,

I have the same feedback as Andy on this one. 

Thanks

James

From:
netmod <netmod-bounces@xxxxxxxx> on behalf of Andy Bierman <andy@xxxxxxxxxxxxx>

Date: Friday, June 18, 2021 at 16:48

To: Last Call <last-call@xxxxxxxx>

Cc: NetMod WG Chairs <netmod-chairs@xxxxxxxx>, Joel Jaeggli <joelja@xxxxxxxxx>, NetMod WG <netmod@xxxxxxxx>, draft-ietf-netmod-nmda-diff@xxxxxxxx <draft-ietf-netmod-nmda-diff@xxxxxxxx>

Subject: Re: [netmod] Last Call: <draft-ietf-netmod-nmda-diff-09.txt> (Comparison of NMDA datastores) to Proposed Standard
Hi,

I tried to get a couple companies interested in this draft but it did not really work for them.
There is low demand for an NMDA diff but high demand for a more general "YANG data compare" operation.

The main issues raised were:

1) can only compare 2 datastores
    Want to compare a datastore to a backup (or more generally a URI, ala copy-config)

2) The output is only YANG Patch
    Want a "config" container that can be used with the "edit-config" operation.
    NETCONF clients cannot use the YANG patch format to edit a datastore with the differences

3) Not interested in the complex filtering and "origin" attributes
    Not applicable to the use-case.

The main use-case:

  1) make a backup of a server (or already have a common baseline shared across servers)
  2) make config changes to the server and test them out
  3) get a diff that can be used as a "patch" to the backup
  4) apply the patch to different servers (that are running a compatible config as the backup or baseline)

I realize there are no standard "backup" and "restore" operations so I am not suggesting
that the draft be redone to support this use-case.

Andy

On Fri, Jun 18, 2021 at 6:36 AM The IESG <iesg-secretary@xxxxxxxx> wrote:

The IESG has received a request from the Network Modeling WG (netmod) to

consider the following document: - 'Comparison of NMDA datastores'

  <draft-ietf-netmod-nmda-diff-09.txt> as Proposed Standard

The IESG plans to make a decision in the next few weeks, and solicits final

comments on this action. Please send substantive comments to the

last-call@xxxxxxxx mailing lists by 2021-07-02. Exceptionally, comments may

be sent to iesg@xxxxxxxx instead. In either case, please retain the beginning

of the Subject line to allow automated sorting.

Abstract

   This document defines an RPC operation to compare management

   datastores that comply with the NMDA architecture.

The file can be obtained via

https://datatracker.ietf.org/doc/draft-ietf-netmod-nmda-diff/

The following IPR Declarations may be related to this I-D:

   https://datatracker.ietf.org/ipr/3084/

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