[Bier] draft-ietf-bier-ipv6-requirements-09
Gyan Mishra <hayabusagsm@gmail.com> Wed, 18 November 2020 15:14 UTC
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From: Gyan Mishra <hayabusagsm@gmail.com>
Date: Wed, 18 Nov 2020 10:14:20 -0500
Message-ID: <CABNhwV0aZRqXP2wAweEktsibTYpHqHhDB9OTPkO+1JmyOb7-gA@mail.gmail.com>
To: Alvaro Retana <aretana.ietf@gmail.com>, BIER WG <bier@ietf.org>, Greg Shepherd <gjshep@gmail.com>, "Jeffrey (Zhaohui) Zhang" <zzhang@juniper.net>, Tony Przygienda <tonysietf@gmail.com>, draft-ietf-bier-ipv6-requirements <draft-ietf-bier-ipv6-requirements@ietf.org>, "zhang.zheng" <zhang.zheng@zte.com.cn>
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Subject: [Bier] draft-ietf-bier-ipv6-requirements-09
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All I would like to thank the Greg, Tony and Alvaro on their pointers and guidance this morning to help move the ball forward with the requirements draft. What I heard from Greg which rang out loud and clear and I mentioned to the requirements authors that today we have BIER MPLS where the BIER header is encoded into MPLS label stack layer 2 1/2 and we also have non MPLS BIER Ethernet ether type 0xAB37. So why do we need non MPLS BIER encapsulation in an IPV6 environment as that IPv6 environment can be supported by non MPLS BIER Ethernet. The case and point here is that eventually just as ATM and Frame Relay now live in the technology graveyard so will at some point in time as SRv6 matures will become the end all be all “core transport” mechanism for all operators. So that being said we need a another encapsulation method to carry BIER , and per RFC 8296 that gap is filled with Non MPLS BIER Ethernet encapsulation today which will work for future SRv6 transport once MPLS goes by the wayside. At the beginning of the presentation Greg corrected me and stated that that after the BIERin6 independent model draft was published, that the requirement draft came about to build a set of requirements as to the “why” we need BIER to work in a non MPLS BIER in an IPv6 environment when we already have the BIER Ethernet encapsulation that fits the bill and works. So that’s the million $$ question we are trying to solve here with the requirements draft. As for the IPV6 6MAN questions, I was brought on board by Mike McBride as the IPv6 SME as well as multicast SME - but point being member of 6MAN for many years so a go between liaison with 6MAN related to any questions regarding following the IPV6 specification for extension header usage per RFC 8200. Both solutions drafts had been reviewed by myself and 6MAN and no technical issues were found regarding the solutions. Alvaro mentioned as far as the list of requirements that they were fairly basic but maybe needed some more meat behind it such as the “support various L2 link types” but we did not specify. In previous versions we stated L2 agnostic and then switched to various but being vague on which L2. Alvaro also mentioned why OAM should be a requirement. We may want to add a sentence on justification as to why we picked BIER IPv6 requirements as required versus optional. We need to add some more meat in the introduction or maybe even a separate section as to what gap is being filled by non MPLS BIER in IPv6 environment using IPv6 encapsulation and encoding the BIER header versus Non MPLS BIER Ethernet. Also maybe use the requirements section to see if a new requirement that maybe a gap that is not covered by non MPLS BIER Ethernet that can be covered by non MPLS BIER in an IPv6 environment. At the end of the call when we rolled through the last two drafts and went into overtime I heard the ask for call for adoption for BIERin6 independent model. https://datatracker.ietf.org/doc/draft-zhang-bier-bierin6/ I would not think we are ready to adopt any non MPLS BIER in IPV6 environment solution if we still do not have the requirements set as to the gap that is being filed and problem being solved that cannot be done today with non MPLS BIER Ethernet. The flip side of the comment above is that if we are ready to adopt and we decided we can skip answering the “why” questions, so then do we need the requirements draft at all if that’s the case as we have made the decision to go with a single solution and are closing the door on any other options. If the latter then we hang tight on any adoption of any solution and wait till the requirements draft is completed and adopted followed by moving forward with adopting any solutions. Kind Regards Gyan -- <http://www.verizon.com/> *Gyan Mishra* *Network Solutions A**rchitect * *M 301 502-134713101 Columbia Pike *Silver Spring, MD
- [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 peng.shaofu
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Alvaro Retana
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Tony Przygienda
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Greg Shepherd
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Greg Shepherd
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Tony Przygienda
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Greg Mirsky
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Adrian Farrel
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Adrian Farrel
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Tony Przygienda
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Adrian Farrel
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Adrian Farrel
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Tony Przygienda
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Tony Przygienda
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Adrian Farrel
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Greg Shepherd
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gengxuesong (Geng Xuesong)
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gengxuesong (Geng Xuesong)
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gengxuesong (Geng Xuesong)
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Michael McBride
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gengxuesong (Geng Xuesong)
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gengxuesong (Geng Xuesong)
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Loa Andersson
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Adrian Farrel
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Jeffrey (Zhaohui) Zhang
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Michael McBride
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Eric Vyncke (evyncke)
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Greg Mirsky
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Adrian Farrel
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra
- Re: [Bier] draft-ietf-bier-ipv6-requirements-09 Gyan Mishra