[nmrg] Re: RG last call fordraft-irtf-nmrg-network-digital-twin-arch

周铖 <zhouchengyjy@chinamobile.com> Fri, 09 January 2026 01:18 UTC

Date: Fri, 09 Jan 2026 09:18:46 +0800
From: 周铖 <zhouchengyjy@chinamobile.com>
To: maqiufang1 <maqiufang1@huawei.com>, "jerome.francois@uni.lu" <jerome.francois@uni.lu>, "nmrg@irtf.org" <nmrg@irtf.org>
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Subject: [nmrg] Re: RG last call fordraft-irtf-nmrg-network-digital-twin-arch
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Hi Qiufang, 



Thanks for your valuable comments. Please check my reply inline. 



Best Regards,

Cheng 




 ----邮件原文----
 发件人："maqiufang \\(A\\)" <maqiufang1=40huawei.com@dmarc.ietf.org>
 收件人："jerome.francois@uni.lu" <jerome.francois@uni.lu>,"nmrg@irtf.org" <nmrg@irtf.org>
 抄　送: "nmrg-chairs@irtf.org" <nmrg-chairs@irtf.org>
 发送时间：2025-12-27 11:30:04
 主题：[nmrg] Re: RG last call for draft-irtf-nmrg-network-digital-twin-arch
 
 
 
Hi, all,

 
 

 
I have reviewed this draft and believe it is mature and stable enough to move forward. NDT remains highly relevant to both the research community and industry, particular as network becomes more and more complex and automation demands increase, I think the scope in the draft is well defined and focused on a conceptual foundation for NDT. 

 
 

 
Some comments below for the authors to consider:

 
 ·         Sec.2.2, the definition of Physical Network: Object, system, process, software, or environment that the digital twin is designed to replicate and represent virtually, I am unsure how this relates to networking, as it looks to almost cover everything in the world.


 


       [CZhou] Thanks for this comment. This definition was updated to address previous comments in the mailing list to emphasize that physical network includes not only ‘physical devices’, but also ‘virtual entities’ or software that carries network services. We will clarify the definition of ‘Physical Network’ in next version. Below can be a candidate option.

 
     Physical Network: Network entities composed of network infrastructure (physical network elements, virtual network elements, etc.) that the digital twin is designed to replicate and represent virtually. 





 

 
 ·         Figure1 seems not clear enough to me, e.g., is there any relationship between different elements, what does the line connecting different elements mean here? They seem to add visual noise. What does a central Network Digital Twin box mean here?


 


 


      [CZhou] Thanks for this comment. Figure 1 is to show NDT concept. Four elements of data, model, mapping, and interface help construct a NDT instance, while logic element facilitates optimal resource allocation and configuration, enhancing efficiency and performance. 

 Central "Network Digital Twin" Box just represents a unified NDT instance — a cohesive platform integrating the five elements. Yes, we can consider removing the box to avoid confusion. 








 
 ·         Section 11.5 lists network inventory management as a sample application scenarios, which is good, perhaps consider adding a reference to some ongoing work in IETF IVY WG (https://datatracker.ietf.org/wg/ivy/about/) as well.


 


       [CZhou] Thanks for the suggestion. We will update in next version.



 
 

 
Best Regards,

 
Qiufang





 
 
From: Jérôme FRANCOIS [mailto:jerome.francois@uni.lu] 
 Sent: Friday, December 19, 2025 12:59 AM
 To: nmrg@irtf.org
 Cc: nmrg-chairs@irtf.org
 Subject: [nmrg] RG last call for draft-irtf-nmrg-network-digital-twin-arch

 
 
 
 

 
Dear NMRG participants,
 
 NMRG chairs would like to assess the research group consensus on moving forward with the RFC publication process for draft-irtf-nmrg-network-digital-twin-arch-11 - Network Digital Twin: Concepts and Reference Architecture - https://datatracker.ietf.org/doc/draft-irtf-nmrg-network-digital-twin-arch/11
 
 A previous version (v8) underwent a last call one year ago but we received limited feedback.
 So, please share your assessment on the mailing list including details to support and justify your statement.  
 
 We are particularly interested in assessing the following aspects:
 
 1. Scope: 

 
 ·                 Are the problem statements, research questions, or challenges clear, well-described and well-articulated?

 
 ·                 Is the scope enough defined and focused? Is the problem still relevant to the research community (/to the industry)?

 
2. Contribution and impact: 

 
 ·                 Does the content of the document address well the scope?

 
 ·                 Will this contribution create impact to further research and activities in NMRG and in the whole network management community?

 
 ·                 Is the content complete enough? What may be missing? What may be beyond/out of scope?

 
 ·                 Are the quality and depth good enough? (scientific proposition or analysis, rigor of the method, impact…)

 
 ·                 Is the work mature and stable enough? e.g. by capturing a fair and contemporary assessment of the research topic

 

 Please let us know if you think this document is ready to proceed for publication or if it needs further discussions and refinement.
 This work is essential to set a baseline and help to frame research directions on the network digital twin theme. Therefore, the chairs recommend the research group to devote enough attention and time to review this work and work towards the best possible outcome.
 
 Review deadline is set to 25 January 2026. Earlier feedback is highly encouraged.
 
 
 Best regards
 Jérôme & Jéferson
 NMRG co-chairs

[nmrg] Re: RG last call fordraft-irtf-nmrg-networ… 周铖