Re: [spring] WG Adoption Call for https://tools.ietf.org/html/draft-gandhi-spring-twamp-srpm-11

Hi WG, Support. However, there are some encoding format changes among versions, hope the encoding format can be stable in the following revision ASAP. Many thanks for the authors' contribution! Thanks, Cheng From: spring [mailto:spring-boun...@ietf.org] On Behalf Of James Guichard Sent: Thur

Re: [spring] WG Adoption Call for https://tools.ietf.org/html/draft-gandhi-spring-stamp-srpm-03

Hi WG, I have read the document and think this document is useful. Support the adoption. Thanks, Cheng From: spring [mailto:spring-boun...@ietf.org] On Behalf Of James Guichard Sent: Thursday, October 22, 2020 8:52 PM To: spring@ietf.org Cc: ippm-cha...@ietf.org; spring-cha...@ietf.org Subje

Re: [spring] draft-ietf-spring-nsh-sr

Agree with Bruno’s comments on section 4. I think this is more like an Proxy mechanism. Also, I only see NSH over SR-MPLS is illustrated in the figure. How about SRv6？ When a packet has to be forwarded to an SF attached to an SFF, the SFF performs a lookup on the prefix SID Prefix SID is onl

Re: [spring] WG Adoption Call for draft-li-spring-srv6-path-segment

Hi SPRING, Support as a co-author. SRv6 Path Segment is useful to identify an SRv6 Path, so that it can be used in use cases like PM, 1+1 Protection and OAM. I think it can be a good basis for Path related services. Also, comments and contributions are welcome! Many thanks, Cheng From: spr

Re: [spring] WG Adoption Call Concluded for draft-li-spring-srv6-path-segment-07

Many thanks for Chairs! I am not aware of any IPR disclosures for this document. Thanks, Cheng From: spring [mailto:spring-boun...@ietf.org] On Behalf Of James Guichard Sent: Tuesday, November 24, 2020 10:57 PM To: spring@ietf.org Cc: spring-cha...@ietf.org Subject: [spring] WG Adoption Call

Re: [spring] IPR call for draft-ietf-spring-nsh-sr

I am aware of an IPR that has been disclosed in the system. Thanks, Cheng From: spring [mailto:spring-boun...@ietf.org] On Behalf Of bruno.decra...@orange.com Sent: Wednesday, February 10, 2021 2:06 AM To: spring@ietf.org; draft-ietf-spring-nsh...@ietf.org Subject: [spring] IPR call for draft-i

Re: [spring] WG Adoption Call for draft-dong-spring-sr-for-enhanced-vpn

Hi SPRING, I have read the document and think it is mature and ready to be adopted. This document describes how to implement SR-based VTN using resource-aware SIDs, which is very helpful for people to understand. I would like to work on it as well! :) Thanks to the authors! Cheng From: sp

Re: [spring] [Srcomp] FW: New Version Notification for draft-srcompdt-spring-compression-requirement-06.txt

would like to ask for WG Adoption call for draft. B.R. Weiqiang Cheng -邮件原件- 发件人: internet-dra...@ietf.org [mailto:internet-dra...@ietf.org] 发送时间: 2021年3月29日 11:36 收件人: Cheng Li; Chongfeng Xie; Darren Dukes; Peng Shaofu; Ron Bonica; Shaofu Peng; Weiqiang Cheng; Wim Henderickx 主题: New

Re: [spring] WG Adoption Call for https://www.ietf.org/archive/id/draft-gandhi-spring-stamp-srpm-06.txt

Yes, support. The document describes a mature and useful method for PM in SR networking. Thanks, Cheng From: James Guichard [mailto:jguic...@futurewei.com] Sent: Monday, June 7, 2021 8:35 PM To: spring@ietf.org Cc: spring-cha...@ietf.org Subject: [spring] WG Adoption Call for https://www.ie

Re: [spring] WGLC for https://datatracker.ietf.org/doc/draft-ietf-spring-mpls-path-segment/

As an contributor, I support the WGLC. I am not aware of any IPR related to this document. Thanks, Cheng From: spring [mailto:spring-boun...@ietf.org] On Behalf Of James Guichard Sent: Wednesday, July 7, 2021 11:49 PM To: spring@ietf.org Cc: spring-cha...@ietf.org Subject: [spring] WGLC for h

[spring] 答复: SRv6 compression

Hi Tony, Thanks you for your comments! For sure, our goal is not to deprecate SRv6 but solving the overhead issue of SRv6 so that we can use it better. That is why we made the effort in the past year and even longer. I believe we do not need to state the effort we made in the past many years to

[spring] 答复: SRv6 SID List compression

Hi Gyan, Many thanks for your comments. Yes it is, we finished the work as required, really difficult. I do hope the WG can move forward to make the adoption call of the better/best solution. As you know, the vendors and operators have made their choice already, over 10 vendors have implement

[spring] 答复: SRv6 compression

Agree, we should pick one solution to be standardized now, to facilitate the network deployment. And I believe the solution is the one that has been implemented by the most vendors in the world, which is CSID. That would help the industry for sure. Respect, Cheng 发件人: spring [mailto:spring-

Re: [spring] WG Adoption call - draft-srcompdt-spring-compression-requirement - draft-srcompdt-spring-compression-analysis

As an co-author, I support the adoption of the documents since they have been discussed deeply. I will suggest to move the requirements to be published as an RFC, since the requirements are not solution related. But I do not suggest to move the analysis documents to be published as an RFC, sinc

Re: [spring] Conclusion from WG poll on dataplane solution for compressing segment routing over IPv6

Hi Chairs, After a long-time discussion and many contributions have been made to the topic, I believe we have get the point that we should step forward to adopt the CSID draft, therefore, I fully agree with the CSID authors' POV. Many thanks for your work, it MUST be difficult for you :) But I

Re: [spring] WG Adoption call - draft-srcompdt-spring-compression-requirement - draft-srcompdt-spring-compression-analysis

Hi Bruno and chairs, Sure. We will do it ASAP, many thanks for your work! Respect, Cheng 李呈 Li Cheng Mobile: +86-15116983550 Email: c...@huawei.com 发件人：bruno.decraene 收件人：spring 抄 送：spring-chairs 时 间：2021-09-25 00:17:10 主 题：Re: [spr

Re: [spring] [Spring] WGLC for https://datatracker.ietf.org/doc/draft-ietf-spring-mpls-path-segment/

Hi Gyan, Many thanks for your comments. Please see my reply inline. However, I have not answer all the comments yet. I think it will be better to separate the comments into different threads, and we can address them one by one. Again! Thank you for your comments! Respect, Cheng From: Gyan M

Re: [spring] WG Adoption call for https://datatracker.ietf.org/doc/draft-filsfilscheng-spring-srv6-srh-compression/

Hi SPRING， Sorry for the late response due to the National days break. It seems like I miss a lot of discussion, and it did cost me a lot of time to read all the threads. As a member of the design team, and a person who participates in IETF SR standards for a long time, I know who how difficu

[spring] 答复: RE： WG Adoption call for https://datatracker.ietf.org/doc/draft-filsfilscheng-spring-srv6-srh-compression/

: Gyan Mishra [mailto:hayabusa...@gmail.com] 发送时间: 2021年10月11日 4:23 收件人: Chengli (Cheng Li) ; Francois Clad (fclad) 抄送: James Guichard ; SPRING WG ; Yisong Liu ; spring-chairs 主题: Re: [spring] RE： WG Adoption call for https://datatracker.ietf.org/doc/draft-filsfilscheng-spring-srv6-srh

[spring] 答复: SRv6 - SRH in encaps or base header - point 2

so how to use SRH insertion? Out of scope of this draft? Cheng -邮件原件- 发件人: Darren Dukes (ddukes) [mailto:ddu...@cisco.com] 发送时间: 2018年11月3日 2:40 收件人: Chengli (Cheng Li) 抄送: Joel Halpern ; spring@ietf.org; 6...@ietf.org; Lizhenbin ; Mach Chen 主题: Re: SRv6 - SRH in encaps or base

Re: [spring] SRv6 - SRH in encaps or base header - point 2

OK, thanks for your reply. It solves my problems. Regards, Cheng From: Darren Dukes (ddukes) To: Chengli (Cheng Li)mailto:chengl...@huawei.com>> Cc: Joel Halpernmailto:j...@joelhalpern.com>>;springmailto:spring@ietf.org>>;6man<6...@ietf.org<mailto:6...@ietf.org&

Re: [spring] I-D Action: draft-li-idr-sr-policy-path-mtu-01.txt

-line Internet-Drafts directories. Title : Segment Routing Path MTU in BGP Authors : Cheng Li Zhenbin Li Filename: draft-li-idr-sr-policy-path-mtu-01.txt Pages : 7 Date: 2018-12-27 Abstrac

Re: [spring] to progress draft-cheng-spring-mpls-path-segment

+1. After reviewing the document , I think the requirement of path segment is clear and the solution is reasonable and effective. Since the content of this draft is stable, I think it is ready for WG adoption as well. Thanks, Cheng -Original Message- From: spring [mailto:spring-boun.

Re: [spring] IPR Poll for draft-cheng-spring-mpls-path-segment

Hi Bruno & Rob, I am not aware of any IPR that applies to this document. Best regards, Cheng -Original Message- From: spring [mailto:spring-boun...@ietf.org] On Behalf Of bruno.decra...@orange.com Sent: Wednesday, February 20, 2019 5:02 PM To: SPRING WG ; Jeff Tantsura ; draft-cheng-sp

Re: [spring] [mpls] to progress draft-cheng-spring-mpls-path-segment

Hi Loa and Greg, Yes, you are right. The "B->C SubPath" in the first figure needs to be identical to the "B->C SubPath" in the second. Many thanks for your discussion on this, a very interesting question! Thanks, Cheng -Original Message- From: mpls [mailto:mpls-boun...@ietf.org] On Be

Re: [spring] draft-filsfils-spring-srv6-network-programming

Support. The content of these drafts has been stable for a while, I think they are ready to progress. I have some comments regarding to PSP, USP and USD flavors in draft-filsfils-spring-srv6-network-programming-07. 1:What is the motivation for introducing the USD flavor? With USD,

Re: [spring] draft-filsfils-spring-srv6-network-programming

Hi Pablo, Great!! Thank you for solving my confusion. It confuses me a long time. It is very happy to know I am correct. Haha. Thanks, Cheng From: Pablo Camarillo (pcamaril) [mailto:pcama...@cisco.com] Sent: Wednesday, March 06, 2019 5:27 PM To: Chengli (Cheng Li) Cc: spring@ietf.org

Re: [spring] Working Group Adoption Call for draft-cheng-spring-mpls-path-segment

Hi Ketan, Thank you for your support and comments, please see my reply inline. Regards, Cheng -Original Message- From: spring [mailto:spring-boun...@ietf.org] On Behalf Of Ketan Talaulikar (ketant) Sent: Wednesday, February 27, 2019 12:20 PM To: bruno.decra...@orange.com; SPRING WG C

Re: [spring] Working Group Adoption Call for draft-filsfils-spring-srv6-network-programming

Support. The solution defined in this document has been implemented by several vendors and open source data plane, and I think it is ready to be adopted for better help on implementation. My comments regarding USD/PSP/USP have been addressed, hope to see the correct text in the next version. T

Re: [spring] How to support OAM on SR networks ?

Hi Kals, Path Segment can be used for identifying a LSP/SR Path in SR-MPLS networks. With a path segment, use cases like passive Packet loss measurement, bidirectional path association can be done in SR-MPLS. You can read the document of Path Segment[1], which becomes a WG document recently.

[spring] A Light Weight iOAM in SRv6 to eliminate the large overhead of IOAM metadata

Hi iOAMers, We proposed a light SRv6 iOAM method in SPRING: https://tools.ietf.org/html/draft-li-spring-light-weight-srv6-ioam-00 In our method, the IOAM data can reuse the space of SID list, which won't extend the length of header. It may be a complementary solution to solve the problem of la

Re: [spring] WG Adoption Call: draft-guichard-spring-nsh-sr

Yes, support. This draft is useful for scenarios where SFs support NSH and do not support SR, and SFFs support SR, which is a common use case in networking migration from non-SR to SR. Well , I think the details of the mechanism should be described in the future revision. Thanks to authors’ c

Re: [spring] WG Adoption Call: draft-xuclad-spring-sr-service-programming

Yes, support as a co-author. This draft has been updated several revision, and the content is stable for WG adoption. Cheng From: spring [mailto:spring-boun...@ietf.org] On Behalf Of Rob Shakir Sent: Thursday, June 27, 2019 2:14 PM To: SPRING WG List Subject: [spring] WG Adoption Call: draft-

Re: [spring] IPR Poll: draft-xuclad-spring-sr-service-programming

Hi Chairs, I am not aware of any IPR related to this draft. Best Regards, Cheng From: Rob Shakir [mailto:ro...@google.com] Sent: Thursday, June 27, 2019 2:14 PM To: draft-xuclad-spring-sr-service-programm...@ietf.org; SPRING WG List Subject: IPR Poll: draft-xuclad-spring-sr-service-programmin

[spring] Welcome to review draft-li-spring-srv6-path-segment-01, comments are always welcome!

: internet-dra...@ietf.org [mailto:internet-dra...@ietf.org] Sent: Friday, June 28, 2019 4:04 PM To: Rakesh Gandhi ; Lizhenbin ; Weiqiang Cheng ; Dhruv Dhody ; Mach Chen ; Dongjie (Jimmy) ; Mach Chen ; Chengli (Cheng Li) Subject: New Version Notification for draft-li-spring-srv6-path-segment

[spring] Request for comments of draft-li-6man-srv6-path-segment-encap-00.txt

Message- From: internet-dra...@ietf.org [mailto:internet-dra...@ietf.org] Sent: Monday, July 08, 2019 9:39 PM To: Weiqiang Cheng ; Dhruv Dhody ; Chengli (Cheng Li) ; Lizhenbin Subject: New Version Notification for draft-li-6man-srv6-path-segment-encap-00.txt A new version of I-D, draft-li

[spring] Request for comments: draft-li-spring-srv6-security-consideration-01.txt

these threats. Please let us know if you have any comments! See you in Montreal! Thanks, Cheng -Original Message- From: internet-dra...@ietf.org [mailto:internet-dra...@ietf.org] Sent: Tuesday, July 09, 2019 12:28 AM To: Chengli (Cheng Li) ; Chengli (Cheng Li) ; Lizhenbin Subject: New

[spring] 答复: Questions about the life span of Path Segment

Hi Sasha, Many thanks for you comments and sorry for my delay. Please see my reply inline. Cheng 发件人: spring [spring-boun...@ietf.org] 代表 Alexander Vainshtein [alexander.vainsht...@ecitele.com] 发送时间: 2019年7月24日 23:27 收件人: draft-ietf-spring-mpls-path-segment.auth

[spring] 答复: Approaches to MTU efficiency in SRv6 in todays SPRING session

Hi Dirk, I really agree with on the explanation of SRv6 SID. We also think the design of 128-bits SRv6 SID is a good idea. Also, we can not avoid the fact that 128 bits are a little bit long when the SID list is long , and the overhead can not be ignore. We can use the binding SID to release

Re: [spring] Binding SID in SRv6/SRv6 (was: Beyond SRv6)

encapsulating a new IPv6 header. Regards, Cheng Cheng Li Email: chengl...@huawei.com<mailto:chengl...@huawei.com> From: Ron Bonicamailto:rbonica=40juniper@dmarc.ietf.org>> To: Alexander Vainshteinmailto:alexander.vainsht...@ecite

Re: [spring] Binding SID in SRv6/SRv6 (was: Beyond SRv6)

Correct, that is what I want to say. Thanks Ketan for your information. I think Ron understands the usage of Binding SID very well, but I am very curious about why he said there is no need to have a binding SID. Cheng Li Email: chengl...@huawei.com

Re: [spring] Regaining Focus on SRv6 and SRv6+

before requirements. Though we proposed a draft to describe the compressed SRH as well. Let’s discuss the requirements before solution. Cheng Li Email: chengl...@huawei.com<mailto:chengl...@huawei.com> From: Dirk Steinbergmailto:d...@lapishills.com>>

Re: [spring] IPv6 EH-insertion (Re: Spirit and Letter of the Law (was: Question about SRv6 Insert function))

to eh insertion draft is in there. Everything is going in the right process. But I have a question: Why do these kind of arguments emerge right now instead of 5 years ago? We left the “problem “ for 5 years? And suddenly we notice them? How interesting. Cheng Li

Re: [spring] Regaining Focus on SRv6 and SRv6+

Agree with Jingrong. Suddenly, I am thinking about a question: Does SRv6+ bring new value to the networking beyond SRv6? What's the purpose? To compress the Routing header? Then we have many options to do that. Why a new RH with brand new routing scheme? Let's do the standard works together on

Re: [spring] Regaining Focus on SRv6 and SRv6+

Hi Ron, Do you mean the function like END.B6.Encaps defined in https://tools.ietf.org/html/draft-ietf-spring-srv6-network-programming-01#section-4.15? To me, It is really good to discuss do we need a function like END.B6.Insert, that is fine. But It does not mean Encapsulation is a benefit of C

Re: [spring] “SRV6+” complexity in forwarding

Regarding RFC6554, I think it is a good example for us to discuss compression. C-SID follows the similar thought of RFC6554, which reduces the same part of SRv6 SID while only carries the different part. This mechanism does not introduce new type of SID function, but only enhances the encoding

Re: [spring] A note on CRH and on going testing

+1. As I mentioned before, Binding SID is not only for shortening SID list. We should see the important part of binding SID in inter-domain routing, since it hides the details of intra-domain. Security and Privacy are always important. Since the EH insertion related text will be removed from SR

Re: [spring] A note on CRH and on going testing

Happy to hear that, many thanks Jeff. I think many people are/ will be aware of it. :) Regards, Cheng From: Jeff Tantsura [mailto:jefftant.i...@gmail.com] Sent: Friday, September 20, 2019 10:53 AM To: Chengli (Cheng Li) Cc: Bernier, Daniel ; SING Team ; SPRING WG List Subject: Re: [spring

Re: [spring] A note on CRH and on going testing

it pollutes the architecture. If yes, what’s the standard for an Interface IPv6 address? Thanks for confirming that BSID is needed in CRH. I totally agree with you. Best regards, Cheng 李呈 Cheng Li Email: chengl...@huawei.com<mailto:chengl...@huawei.

Re: [spring] SR-MPLS over IPv6？

SRv6+, since it is not SRv6 based. Something like SR-MPLS over IPv6 maybe better? Thanks, Cheng From: Ron Bonica [mailto:rbon...@juniper.net] Sent: Monday, September 23, 2019 10:45 PM To: Chengli (Cheng Li) ; Jeff Tantsura Cc: SING Team ; EXT - daniel.bern...@bell.ca ; SPRING WG List

Re: [spring] draft-ietf-spring-srv6-network-programming: Section 4.16

Hi Zhenqiang and Jeol, As my understanding, the problem is clear. the PSP flavor is associated with the penultimate SID in the segment list, which may be an END, END.X or END.T. The PSP action will be executed after the last SID, which can be an END.Dx SID, is updated to the IPv6 DA. For in

Re: [spring] [Idr] Adoption: draft-li-idr-bgp-ls-sr-policy-path-segment-03.txt and draft-li-sr-policy-path-segment-01.txt - 1 week extension [10/14 to 10/21/2019]

Hi Katen, Many thanks for your valuable comments, will update the drafts to address them ASAP. Please see my rely inline. Thank you again! Cheng From: Idr [mailto:idr-boun...@ietf.org] On Behalf Of Ketan Talaulikar (ketant) Sent: Friday, October 18, 2019 1:51 PM To: Susan Hares ; 'idr wg' ; 'S

[spring] 答复: [Idr] Adoption: draft-li-idr-bgp-ls-sr-policy-path-segment-03.txt and draft-li-sr-policy-path-segment-01.txt - 1 week extension [10/14 to 10/21/2019]

Hi Susan, IDRers and SPRINGers, Many thanks for all your work, contributions and attentions. Your comments help a lot on these documents and me as well for sure. Will upload the documents ASAP. Also, I will collect the comments and share to the WGs, as well as the planning to refine, and impleme

[spring] Request for WG review and adoption of draft-li-spring-srv6-path-segment-04.txt

, Cheng -Original Message- From: internet-dra...@ietf.org [mailto:internet-dra...@ietf.org] Sent: Monday, November 04, 2019 10:53 PM To: Rakesh Gandhi ; Lizhenbin ; Weiqiang Cheng ; Dhruv Dhody ; Mach Chen ; Dongjie (Jimmy) ; Mach Chen ; Chengli (Cheng Li) Subject: New Version

[spring] Welcome to review draft-li-spring-sr-sfc-control-plane-framework-01.txt

Message- From: internet-dra...@ietf.org [mailto:internet-dra...@ietf.org] Sent: Monday, November 04, 2019 9:30 PM To: huruizhao ; Ahmed El Sawaf ; Chengli (Cheng Li) ; Lizhenbin Subject: New Version Notification for draft-li-spring-sr-sfc-control-plane-framework-01.txt A new version of I-D

[spring] Welcome to review draft-li-spring-srv6-security-consideration-03.txt

would like to add in this document, please feel free to let me know! Thanks, Cheng -Original Message- From: internet-dra...@ietf.org [mailto:internet-dra...@ietf.org] Sent: Monday, November 04, 2019 7:24 PM To: Lizhenbin ; Maojianwei (Mao) ; Chengli (Cheng Li) ; Maojianwei (Mao

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