Re: [spring] FW: New Version Notification for draft-tgraf-opsawg-ipfix-srv6-srh-04.txt

Tianran Zhou <> Mon, 25 July 2022 09:16 UTC

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From: Tianran Zhou <>
To: Benoit Claise <>, "" <>, "" <>, "" <>
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Thread-Topic: [spring] FW: New Version Notification for draft-tgraf-opsawg-ipfix-srv6-srh-04.txt
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Date: Mon, 25 Jul 2022 09:16:10 +0000
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Subject: Re: [spring] FW: New Version Notification for draft-tgraf-opsawg-ipfix-srv6-srh-04.txt
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Hi Benoit,

Thanks for bringing this up.
I have been monitoring the discussions on this draft in SPRING and OPSAWG.
As I suggested, please copy your discussions to OPSAWG also, so that we know the progress.

Basically, this draft is simple and straight forward. It's quite similar to rfc9160 also produced by OPSAWG. 
Here are some of my comments:
1. I see the use case section is still rather simple. I am not sure if you have plan to expand. IMO, more details on how to use the proposed IEs is very useful and builds an important part of this document.
2. We can discuss the "Intended status" of this draft, as a similar document rfc9160 is informational. I searched the shepherd review of rfc9160, and there is the following record:
     The intended status is justified given that the document includes
     informative use cases to illustrate the use of the new types
     and it does not include any normative statements. Moreover, the
     registration policy for the target IANA registry (MPLS label types)
     is "Expert Review".

So, if it's the same situation here?

3. I see many lowercase "must" appears in the draft. Please check if some of them should be "MUST".


-----Original Message-----
From: spring [] On Behalf Of Benoit Claise
Sent: Tuesday, July 19, 2022 2:42 PM
Subject: Re: [spring] FW: New Version Notification for draft-tgraf-opsawg-ipfix-srv6-srh-04.txt

Dear all,

Note that the authors will request WG adoption in the OPSAWG next week.
So feel free to join that meeting and/or post your comments via email.

Regards, Benoit

On 6/29/2022 6:53 AM, wrote:
> Dear spring working group,
> draft-tgraf-opsawg-ipfix-srv6-srh defines new IPFIX entities where the SRH and associated control-plane related dimensions are exposed to enable SRv6 data-plane visibility.
> The draft has been introduced and presented at IETF 113 to OPSAWG and SPRING where we collected the first comments and requested adoption at OPSAWG.
> We just published -04 version and would like to collect additional comments and feedback.
> The main changes between version -03 and -04 are:
> -	srhSegmentLocatorLength and srhSegmentEndpointBehavior has been added and included in the use case and operational section description
> -	aligned IE naming according to
> -	updated srhFlagsIPv6 registry
> -	Added "Compressed SRv6 Segment List Decomposition" in operational consideration section
> -	Added data-template and data-record examples for srhSegmentIPv6ListSection and srhSectionIPv6 in example section
> Best wishes
> Thomas
> -----Original Message-----
> From: <>
> Sent: Wednesday, June 29, 2022 6:35 AM
> To: Benoit Claise <>; Pierre Francois <>; Graf Thomas, INI-NET-TCZ-ZH1 <>
> Subject: New Version Notification for draft-tgraf-opsawg-ipfix-srv6-srh-04.txt
> A new version of I-D, draft-tgraf-opsawg-ipfix-srv6-srh-04.txt
> has been successfully submitted by Thomas Graf and posted to the IETF repository.
> Name:		draft-tgraf-opsawg-ipfix-srv6-srh
> Revision:	04
> Title:		Export of Segment Routing IPv6 Information in IP Flow Information Export (IPFIX)
> Document date:	2022-06-28
> Group:		Individual Submission
> Pages:		21
> URL:  
> Status:
> Htmlized:
> Diff: 
> Abstract:
>     This document introduces new IP Flow Information Export (IPFIX)
>     information elements to identify the SRv6 Segment Routing Header
>     dimensions, the SRv6 Control Plane Protocol and the SRv6 Endpoint
>     Behavior that traffic is being forwarded with.
> The IETF Secretariat

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