Thanks for the updates. 

I however, didn’t notice the change in section 2.2 egarding JSON number format, 
which previously was agreed to be changed, in the 25th of this document.

//Zahed



> On 28 Feb 2022, at 22:14, Y. Richard Yang <[email protected]> wrote:
> 
> Hi Zaheduzzaman,
> 
> We have posted the latest version of the document: 
> https://datatracker.ietf.org/doc/html/draft-ietf-alto-performance-metrics-24 
> <https://datatracker.ietf.org/doc/html/draft-ietf-alto-performance-metrics-24>
> 
> Could you please take a look to see if all of your comments are addressed? In 
> particular, 
> - We checked and made sure that the normative references are correct.
> - We updated the abstract to clarify the wording and added sentences in Sec. 
> 1 on the uses.
> - We revised the final wording of 2.2 on the number format
> - We checked all json examples and fixed the issues.
> 
> Please take a look and let us know if there are remaining issues to be 
> addressed.
> 
> Thank you so much!
> Richard
> 
> On Thu, Dec 2, 2021 at 8:32 AM Qin Wu <[email protected] 
> <mailto:[email protected]>> wrote:
> Hi, Zaheduzzaman:
> -----邮件原件-----
> 发件人: Zaheduzzaman Sarker via Datatracker [mailto:[email protected] 
> <mailto:[email protected]>] 
> 发送时间: 2021年12月2日 19:35
> 收件人: The IESG <[email protected] <mailto:[email protected]>>
> 抄送: [email protected] 
> <mailto:[email protected]>; [email protected] 
> <mailto:[email protected]>; [email protected] <mailto:[email protected]>; 
> [email protected] <mailto:[email protected]>; [email protected] <mailto:[email protected]>
> 主题: Zaheduzzaman Sarker's Discuss on draft-ietf-alto-performance-metrics-20: 
> (with DISCUSS and COMMENT)
> 
> Zaheduzzaman Sarker has entered the following ballot position for
> draft-ietf-alto-performance-metrics-20: Discuss
> 
> When responding, please keep the subject line intact and reply to all email 
> addresses included in the To and CC lines. (Feel free to cut this 
> introductory paragraph, however.)
> 
> 
> Please refer to https://www.ietf.org/blog/handling-iesg-ballot-positions/ 
> <https://www.ietf.org/blog/handling-iesg-ballot-positions/>
> for more information about how to handle DISCUSS and COMMENT positions.
> 
> 
> The document, along with other ballot positions, can be found here:
> https://datatracker.ietf.org/doc/draft-ietf-alto-performance-metrics/ 
> <https://datatracker.ietf.org/doc/draft-ietf-alto-performance-metrics/>
> 
> 
> 
> ----------------------------------------------------------------------
> DISCUSS:
> ----------------------------------------------------------------------
> 
> I perhaps understand the intention of extending the ALTO protocol so that the 
> ALTO client and server have defined way of exchanging values for already 
> defined metrics. However, I need to agree with my fellow AD colleagues that 
> this document need to describe why those metrics are needed and describe the 
> relationship with other RFCs those defines those metrics mostly for other 
> contexts. To that end all the RFCs in the Table 1 in section 1 need to be 
> normative references.
> 
> [Qin Wu] I think the key use case is defined in RFC7752 section 2.2, i.e., 
> export BGP-LS collected topology data to ALTO server and the ALTO server 
> expose data to the client. RFC8571 provides additional performance metric 
> related data which is part of topology data. Most of performance cost metrics 
> derived from metrics defined in RFC8571.
> Another two relevant use cases are documented in section 3 of 
> draft-xie-alto-lmap-00, one is targeted to network operators who need to 
> understand the performance of their networks, the performance of the 
> suppliers (downstream and upstream networks), the performance of Internet 
> access services, and the impact that such performance has on the experience 
> of their customers.
> The other is targeted to regulators who want to evaluate the performance of 
> the network services offered by operators.
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> Thanks for the work on this document and thanks to Brian Trammell for his 
> TSVART early review.
> 
> I have following comments which I believe will improve the document quality -
> 
> 1. In the abstract I read about "a better delay performance" and was hoping 
> it will be clear to me what is "a better delay performance". Unfortunately, I 
> was unable to get that. This comes to the point that this document needs to 
> describe why purpose of using the defined metrics well.
> [Qin Wu] See clarification above.
> 
> 2. Section 2.2 says
> 
>     The number MUST be a non-negative JSON integer in the range [0, 100] 
> (i.e.,
>     greater than or equal to 0 and less than or equal to 100), followed by an
>     optional decimal part, if a higher precision is needed.
> 
>   This should be a JSON number type not integer type.
> [Qin Wu] See clarification to Ben's comments. The format of percentile is 
> integer number followed by optional decimal part starting with the '.' 
> separator.
> 3. There are number of broken JSON examples. for example, in section 4.2.3
>     "ipv4:192.0.2.2" {
>       "ipv4:192.0.2.89" :    0,
>       "ipv4:198.51.100.34": 2000
>     }
>    missing ":" after  ipv4:192.0.2.2
> [Qin Wu] Agree to fix this.
> 4. Content-Length: TBA in the examples, I actually don't know how to 
> interpret it.
> 
> [Qin Wu] Agree to fix this.
> 
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