Last Call Review of draft-ietf-dots-requirements-16

Request Review of draft-ietf-dots-requirements
Requested rev. no specific revision (document currently at 22)
Type Last Call Review
Team Ops Directorate (opsdir)
Deadline 2018-11-23
Requested 2018-11-02
Authors Andrew Mortensen, Tirumaleswar Reddy.K, Robert Moskowitz
Draft last updated 2018-11-24
Completed reviews Secdir Last Call review of -16 by Brian Weis (diff)
Opsdir Last Call review of -16 by Scott Bradner (diff)
Tsvart Last Call review of -16 by Joseph Touch (diff)
Genart Last Call review of -16 by Robert Sparks (diff)
Genart Telechat review of -18 by Robert Sparks (diff)
Assignment Reviewer Scott Bradner
State Completed
Review review-ietf-dots-requirements-16-opsdir-lc-bradner-2018-11-24
Reviewed rev. 16 (document currently at 22)
Review result Has Nits
Review completed: 2018-11-24


This is an OPS-DIR review of Distributed Denial of Service (DDoS) Open Threat Signaling Requirements (draft-ietf-dots-requirements)

This document lists requirements for a protocol to used between providers of DDOS mitigation services and users of such services, as such there can be no direct operational issues with the document.  I also did not find any indirect operational issues.

I think the document would benefit from the addition of a section before the requirements section that specifically describes the setup assumed by the document. The descriptions before there hint at a presumed setup but a new section that clearly states the setup would be helpful. (the setup appears to be one where all network traffic to and from a protected entity flows through a DDoS mitigation service provider.  The provider includes one or more DOTS servers.  The protected entity includes one or more DOTS clients that communicate with the DOTS servers) 

Requirement SIG-005 addresses channel redirection – maybe there needs to be a way that clients can move to a new server on their own if they lose hearbeat from the server they were using – that might include a way for a server to provide a list of alternative servers to the clients