A method for dots server deployment
draft-chen-dots-server-hierarchical-deployment-01

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DOTS                                                             M. Chen
Internet-Draft                                                    Li. Su
Intended status: Informational                                 Jin. Peng
Expires: May 3, 2020                                                CMCC
                                                        October 31, 2019

                  A method for dots server deployment
           draft-chen-dots-server-hierarchical-deployment-01

Abstract

   As DOTS is used for DDoS Mitigation signaling, in practice, there are
   different deployment scenarios for DOTS agents deployment depending
   on the network deployment mode.  This document made an accommandation
   for DOTS Server deployment which may be Suitable for ISP.  The goal
   is to provide some guidance for DOTS agents deployment.

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   Copyright (c) 2019 IETF Trust and the persons identified as the
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Chen, et al.               Expires May 3, 2020                  [Page 1]
Internet-Draft     dots server hierarchical deployment      October 2019

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  DOTS server Considerations  . . . . . . . . . . . . . . . . .   3
   4.  DOTS server deployment inside an ISP  . . . . . . . . . . . .   4
     4.1.  DOTS Agents Deployment  . . . . . . . . . . . . . . . . .   4
     4.2.  DOTS Agents interfaces  . . . . . . . . . . . . . . . . .   5
       4.2.1.  Bandwidth consuming attack  . . . . . . . . . . . . .   6
       4.2.2.  Host resource consuming attack  . . . . . . . . . . .   6
   5.  DOTS server deployment between ISPs . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   7.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgement . . . . . . . . . . . . . . . . . . . . . . .   7
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   DDoS Open Threat Signaling (DOTS) is a protocol to standardize real-
   time signaling, threat-handling
   requests[I-D.ietf-dots-signal-channel], when attack target is under
   attack, dots client send mitigation request to dots server for help,
   If the mitigation request contains enough messages of the attack,
   then the mitigator can respond very effectively.

   In the architecture draft[I-D.ietf-dots-architecture], when comes to
   the deployment topic, it says this does not necessarily imply that
   the attack target and the DOTS client have to be co-located in the
   same administrative domain, but it is expected to be a common
   scenario.  Although co-location of DOTS server and mitigator within
   the same domain is expected to be a common deployment model, it is
   assumed that operators may require alternative models.

   In the DOTS server discovery draft[I-D.ietf-dots-server-discovery],
   it is says that a key point in the deployment of DOTS is the ability
   of network operators to be able to onfigure DOTS clients with the
   correct DOTS server(s) nformation consistently.

   In the DOTS multihoming draft[I-D.ietf-dots-multihoming], it provides
   deployment recommendations for DOTS client and DOTS gateway, it is
   says when conveying a mitigation request to protect the attack
   target, the DOTS client among the DOTS servers available Must select
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