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Shepherd writeup

The following is the shepherd write-up for draft-ietf-dots-data-channel-22.

1. Summary

The document shepherd is Roman Danyliw. The responsible Area Director is
Benjamin Kaduk.

This document specifies the DOTS data channel, one of two protocols (the other
being the DOTS signal channel – draft-ietf-dots-signal-channel) that enables
the exchange of information necessary to mitigate a DDoS attack.  This data
channel protocol allows the exchange of information that is not appropriate to
send under attack conditions.

The WG has reached consensus to publish this protocol specification as a
Proposed Standard.  It has been subjected to substantial review from the
community of interest and implementations.

2. Review and Consensus
The WG adopted this draft in April 2017 (-00) from an individual submission
which was first published in August 2016.  This draft has evolved through
design and implementation feedback to the current -22 version.

There have been three implementations of the draft, one open source and two
proprietary from the following vendors: ** go-dots (NTT) -- ** NCC Group ** Huawei

Older versions of the draft were used in interops at the Hackathons of IETF 100
and 101 to enable end-to-end testing for DOTS agents.  At the IETF 102
Hackathon, there was an inter-op specifically focused on testing between these
three implementations per the -16 of the draft.  Identified issues were fixed
in draft versions -17 and -18.  The full results of the inter-op can be seen
 Final issues were identified and resolved at the IETF 103 Interop,

The WG convened a WGLC on -18 of the draft from August 10 – 27, 2018
(  Robust
feedback occurred which resulted in the publication of -19, -20 and -21.

Feedback during the shepherding preparation produced -22 to address editorial

This data channel protocol has a companion signal channel protocol
(draft-ietf-dots-signal-channel) in DOTS which has also been submitted for

This draft has seen extensive review from the WG and from implementers.  There
was early coordination with the NETCONF WG on ACL YANG modules.  The WG
believes it is ready for publication.

3. Intellectual Property
Each author has confirmed conformance with BCPs 78 and 79 on the DOTS mailing

** Mohammed Boucadair -- ** Tirumal
Reddy -- **
Kaname Nishizuka -- ** Liang Xia
-- **
Prashanth Patil – ** Andrew
Mortensen – **
Nik Teague --

There are no IPR disclosures on the document.

4. Other Points

Idnits reports the following issues which do not require action:

(** error **)  “The abstract seems to contain references”  The abstract does
contain these references but only in guidance to the RFC Editor who will remove
them prior to publication.

(== warnings ==) The four “xx has weird spacing” instances are pointing to an
figure depicting a YANG model and can be ignored

(-- comments --) The four “Looks like a reference” instances are pointing to an
example and can be ignored.

The yang modules in the draft were validated as having no errors using (that was configured as follows -- validator version:
0.3.1, xym version: 0.4, pyang version: 1.7.3 confdc version: confd-6.5.3 ,
yanglint version: yanglint 0.14.69)

There are two actions for IANA:

(1) Registration of a new URI,
urn:ietf:params:xml:ns:yang:ietf-dots-data-channel, in the “IETF XML Registry";
and (2) Registration of new YANG module, ietf-dots-data-channel, in the “YANG
Module Names” registry

No early expert review has been requested for the above IANA allocation.