[Bier] BIER IPv6 Requirement

["Gengxuesong (Geng Xuesong)" <[e-mail]>]

Hi Mike, authors and WG,

I have read through the existing version of draft-ietf-bier-ipv6-requirements and the comments in the mailing list.  The concerns for this document mainly comes from three aspects:

1.       The problem statement: why we need BIER IPv6 solution (which I think is straight forward: we need solution(s) to deploy BIER in an IPv6 domain)

2.       The conceptual model for BIER IPv6 encapsulation (the existing model classification seems to be roughly agreed in the WG but the descriptions should be modified based on the comments)

3.       The requirement items and classification

I think the previous two points mainly request editing work and a document with some my personal recommended text could be found in the attachment just for your reference.
For the third point, I list the requirement items based on the existing discussions in the WG as follows:
Mandatory:

?   L2 Agnostic (may be removed)

?   Align to BIER architecture defined in RFC8279 (may be removed)

?   Support deployment with Non-BFR routers

?   Support OAM

?   Support overlay service, e.g., MVPN, EVPN
Optional:

?   Support native IPv6 functions, e.g., IPSEC, Fragmentation

?   Support inter-AS multicast deployment

?   Provide necessary security methods (may be removed)

I suggest to discuss and confirm these items in WG first, including what should be included/excluded, which one should be mandatory etc., then we could work on the detailed explanations for each item.

Best Regards
Xuesong