UDP based Publication Channel for Streaming Telemetry
draft-ietf-netconf-udp-pub-channel-04
Document Type Active Internet-Draft (netconf WG)
Last updated 2018-10-19
Replaces draft-zheng-netconf-udp-pub-channel
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NETCONF                                                         G. Zheng
Internet-Draft                                                   T. Zhou
Intended status: Standards Track                                A. Clemm
Expires: April 22, 2019                                           Huawei
                                                        October 19, 2018

         UDP based Publication Channel for Streaming Telemetry
                 draft-ietf-netconf-udp-pub-channel-04

Abstract

   This document describes a UDP-based publication channel for streaming
   telemetry use to collect data from devices.  A new shim header is
   proposed to facilitate the distributed data collection mechanism
   which directly pushes data from line cards to the collector.  Because
   of the lightweight UDP encapsulation, higher frequency and better
   transit performance can be achieved.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at https://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on April 22, 2019.

Copyright Notice

   Copyright (c) 2018 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Zheng, et al.            Expires April 22, 2019                 [Page 1]
Internet-Draft               udp-pub-channel                October 2018

   This document is subject to BCP 78 and the IETF Trust's Legal
   Provisions Relating to IETF Documents
   (https://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
   carefully, as they describe your rights and restrictions with respect
   to this document.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
   2.  Terminologies . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Solution Overview . . . . . . . . . . . . . . . . . . . . . .   4
   4.  Transport Mechanisms  . . . . . . . . . . . . . . . . . . . .   5
     4.1.  Dynamic Subscription  . . . . . . . . . . . . . . . . . .   6
     4.2.  Configured Subscription . . . . . . . . . . . . . . . . .   7
   5.  UDP Transport for Publication Channel . . . . . . . . . . . .   8
     5.1.  Design Overview . . . . . . . . . . . . . . . . . . . . .   8
     5.2.  Data Format of the UPC Message Header . . . . . . . . . .   9
     5.3.  Options . . . . . . . . . . . . . . . . . . . . . . . . .  10
       5.3.1.  Reliability Option  . . . . . . . . . . . . . . . . .  10
       5.3.2.  Fragmentation Option  . . . . . . . . . . . . . . . .  11
     5.4.  Data Encoding . . . . . . . . . . . . . . . . . . . . . .  12
   6.  Using DTLS to Secure UPC  . . . . . . . . . . . . . . . . . .  12
     6.1.  Transport . . . . . . . . . . . . . . . . . . . . . . . .  13
     6.2.  Port Assignment . . . . . . . . . . . . . . . . . . . . .  14
     6.3.  DTLS Session Initiation . . . . . . . . . . . . . . . . .  14
     6.4.  Sending Data  . . . . . . . . . . . . . . . . . . . . . .  14
     6.5.  Closure . . . . . . . . . . . . . . . . . . . . . . . . .  15
   7.  Congestion Control  . . . . . . . . . . . . . . . . . . . . .  15
   8.  A YANG Data Model for Management of UPC . . . . . . . . . . .  16
   9.  YANG Module . . . . . . . . . . . . . . . . . . . . . . . . .  16
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  18
   11. Security Considerations . . . . . . . . . . . . . . . . . . .  19
   12. Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  19
   13. References  . . . . . . . . . . . . . . . . . . . . . . . . .  19
     13.1.  Normative References . . . . . . . . . . . . . . . . . .  19
     13.2.  Informative References . . . . . . . . . . . . . . . . .  20
     13.3.  URIs . . . . . . . . . . . . . . . . . . . . . . . . . .  21
   Appendix A.  Change Log . . . . . . . . . . . . . . . . . . . . .  21
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