BFD Group, chairs, Álvaro,

Since BFD will not be meeting in IETF95 [1], I’m sending this message to the 
list attempting to understand the state, potential dependencies, and timing for 
advancing the S-BFD documents.

Note that [1] says:
“- S-BFD is done, AD comments being addressed.”

Currently, draft-ietf-bfd-seamless-base-08, submitted on 2016-02-23, addressed 
all of the AD Evaluation comments. Bfd-seamless-base is a hard (Normative) 
dependency on 5 other documents [2], which are stuck waiting for -base to move 
(bfd-seamless-ip, isis-sbfd, ospf-sbfd, l2tpext-sbfd, and pals-seamless-vccv). 
Not progressing bfd-seamless-base is blocking 6 docs (including itself)

One of the changes made as part of the AD Evaluation of 
draft-ietf-bfd-seamless-base is to make the rational for S-BFD in the 
Introduction independent (i.e., not Normatively dependent) from the use cases 
in bfs-seamless-use-case. Basically, bfd-seamless-base includes self-defined 
self-contained rational for the protocol, and informatively points to use-cases.

The bfd-seamless-use-case document was last submitted in July 2015. I can 
appreciate the fact that publishing use-cases after the protocol is potentially 
of little value — there is a value in that those use-cases can guide extensions 
to the protocol. But it also concerns me that there seems to be very little 
value for the base document to wait on publishing the use-cases first, since 
the -base protocol is done and the base document was updated to be independent 
from use cases. The use case document is only referenced by the -base document, 
and that pointer is Informative [3].

What’s the plan on pushing forward bfd-seamless-base (and untangling the other 
5)? Is there something for the WG or editors to do (I assume not since -base 
has no dependencies and all AD Evaluation comments have been addressed)?

Net-net: I’d recommend moving -base (and dependents) forward.

Thanks,

— Carlos.

[1] https://www.ietf.org/mail-archive/web/rtg-bfd/current/msg03108.html
[2] https://datatracker.ietf.org/doc/draft-ietf-bfd-seamless-base/referencedby/
[3] 
https://datatracker.ietf.org/doc/draft-ietf-bfd-seamless-use-case/referencedby/

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