Hi Linda,

Yes, the suggested changes will make it clearer and looks good to me.

/Magnus

From: Linda Dunbar <[email protected]>
Date: Wednesday, 31 January 2024 at 20:48
To: Magnus Westerlund <[email protected]>, [email protected] 
<[email protected]>
Cc: [email protected] 
<[email protected]>, [email protected] 
<[email protected]>
Subject: RE: Tsvart last call review of 
draft-ietf-rtgwg-net2cloud-problem-statement-32
Magnus,

Thank you very much for the review and comments.
Resolutions to your comments are listed below. Please let us know if they are 
satisfactory.

Linda

-----Original Message-----
From: Magnus Westerlund via Datatracker <[email protected]>
Sent: Friday, January 19, 2024 4:01 AM
To: [email protected]
Cc: [email protected]; [email protected]
Subject: Tsvart last call review of 
draft-ietf-rtgwg-net2cloud-problem-statement-32

Reviewer: Magnus Westerlund
Review result: Ready with Issues

This document has been reviewed as part of the transport area review team's 
ongoing effort to review key IETF documents. These comments were written 
primarily for the transport area directors, but are copied to the document's 
authors and WG to allow them to address any issues raised and also to the IETF 
discussion list for information.

When done at the time of IETF Last Call, the authors should consider this 
review as part of the last-call comments they receive. Please always CC 
[email protected]<mailto:[email protected]> if you reply to or forward this 
review.

First of all let me tell you how the document comes across to me. It appears to 
be an identification of a number of potential hurdles for enterprises deploying 
using hybrid cloud. The issues identify some options or mitigations for the 
issue. To the level where I am uncertain that it really is problem statement.

The requirements list in section 6 appears quite high level and identifying 
some factors where at least some where limitations in implementations, rather 
than in standards. So, I don't see this document as a problem statement that 
results in clearly identifying the need for standards work in an area to 
address a set of issues with common solution. So from my perspective I think 
the document can really be focuses on informational document pointing out 
mitigations for issues. However, the document is quite wide and an enterprise 
will have to make choices based on its situations, chose cloud providers and 
other factors for how to deploy or evolve their deployment. Thus, I think the 
problem statement part of the document can really be eliminated.

[Linda] The intent of the document is to describe the network-related problems 
enterprises face when interconnecting their branch offices with dynamic 
workloads in Cloud DCs and the mitigation practices (gluing many IETF drafts 
for those mitigation practices. )
How about drop the "Problem Statement" using the following title?
Dynamic Networks to Hybrid Cloud DCs: Problems and Mitigation Practices

Also, I think it is a bit unclear if document is on the edge between a 
Informational document informing on existing solutions as mitigations, or if it 
actually recommend or prescribe usage of solutions in situations that might not 
before been envisioned or recommended.

[Linda] The document is to describe the issues and to glue all the IETF drafts 
posted to address the issues identified in the document (as the mitigation 
methods) .

Additional comments:
Section 4.1:

"A Customer Gateway can be a customer owned router or ports
   physically connected to an AWS Direct Connect GW."

In Figure 1, is the customer gateway the CPE, or any of the other gateways at 
the DC or cloud provider? I would request clarifying the definition of the 
customer gateway.

[Linda] Thanks for catching this. Customer Gateway -> CPE (Customer Premises 
Equipment)

Thank you,
Linda



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