Re: [spring] SRv6 compression

Andrew Alston <Andrew.Alston@liquidtelecom.com> Tue, 03 August 2021 06:13 UTC

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From: Andrew Alston <Andrew.Alston@liquidtelecom.com>
To: Qiuyuanxiang <qiuyuanxiang@h3c.com>, "li_zhenqiang@hotmail.com" <li_zhenqiang@hotmail.com>, "Henderickx, Wim (Nokia - BE/Antwerp)" <wim.henderickx@nokia.com>, "spring@ietf.org" <spring@ietf.org>
Thread-Topic: [spring] SRv6 compression
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Date: Tue, 3 Aug 2021 06:12:57 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/spring/ysigIpDMAQ7YCj_KwvM2yhnZtOM>
Subject: Re: [spring] SRv6 compression
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From my side,

With or without the IETF – I will continue to use CRH and we will continue to make product choices based on it.  CRH is not SRv6 – it is, and we have stated this before, a building block for many things.

In our case – the ability to steer traffic is what drives a lot of what we do, but at the same time – the destination option SID for 16/32 bit which is an arbitrary number we can tie to functional behavior on the server side – is useful.

I also point out that as I said time and again, we could not wait for the IETF, and we have invested significantly in CRH development into various products – and the rejection of CRH by the IETF – by a DT inside SPRING when the document is actually in 6man and is not srv6 – will simply lead to a case of us making large purchasing decisions on the vendors that choose to support what would be a proprietary protocol.  So – rather than contributing to open standards the IETF by choosing one option – an option favored in the DT report – where 5 outta 7 members were actually authors or directly related to CSID – the IETF will be contributing towards what will become a proprietary protocol – either on IANA allocated code points, experimental code points or squatted code points – either way – CRH will continue and we will base our millions a year in purchasing partially on this factor (especially considering the significant amount of development resource that has been put into this – and yes – people will say – why did you put the resources into it – well – CRH has been stable in RFC since before CSID existed – and development cannot stop because of inertia in the IETF)

CRH is functional – in production – and deployed – and caters for use cases simply not covered by CSID – because they have entirely different purposes.  CSID was built to compress SRv6 – CRH is a building block for whatever the hell you want it to be.  To choose one over the other disregards this entirely.

Hence, I say this again, I am supportive of moving multiple options forward here – one within spring, and the other in 6man where it currently resides, to cater for disparate use cases.

Thanks

Andrew


From: spring <spring-bounces@ietf.org> On Behalf Of Qiuyuanxiang
Sent: Monday, August 2, 2021 1:01 PM
To: li_zhenqiang@hotmail.com; Henderickx, Wim (Nokia - BE/Antwerp) <wim.henderickx@nokia.com>om>; spring@ietf.org
Subject: Re: [spring] SRv6 compression

Agree.

As a vendor, we do hope to pick one solution to be standardized, to facilitate the network deployment.
Also, since the CSID has been implemented by many vendors, I will suggest to adopt CSID.


Best Regards,
Yuanxiang Qiu


发件人: spring [mailto:spring-bounces@ietf.org] 代表 li_zhenqiang@hotmail.com<mailto:li_zhenqiang@hotmail.com>
发送时间: 2021年7月31日 16:38
收件人: Henderickx, Wim (Nokia - BE/Antwerp) <wim.henderickx@nokia.com<mailto:wim.henderickx@nokia.com>>; spring@ietf.org<mailto:spring@ietf.org>
主题: Re: [spring] SRv6 compression

Agree. Picking 1 solution to satisfy our requirements will benefit both the vendors and the operators.

Best Regards,
Zhenqiang Li
________________________________
li_zhenqiang@hotmail.com<mailto:li_zhenqiang@hotmail.com>

From: Henderickx, Wim (Nokia - BE/Antwerp)<mailto:wim.henderickx@nokia.com>
Date: 2021-07-27 15:11
To: spring@ietf.org<mailto:spring@ietf.org>
Subject: [spring] SRv6 compression
Given the design team accomplished the work on providing requirements and analysis to compress an SRv6 SID list, I would recommend we pick 1 solution similar to what was done in NVO3 (when we discussed GENEVE, GUE, GPE, etc) given this has to be implemented in HW..

I hope we can conclude on this asap and move forward on this topic

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