Sampled Traffic Streaming
draft-gray-sampled-streaming-02

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Internet Engineering Task Force                                  A. Gray
Internet-Draft                                    Charter Communications
Intended status: Informational                               L.J. Wobker
Expires: 7 May 2020                                        Cisco Systems
                                                         4 November 2019

                       Sampled Traffic Streaming
                    draft-gray-sampled-streaming-02

Abstract

   This document standardizes both 1) a means of requesting a stream of
   packet samples from any device generating, routing, or forwarding
   traffic, and 2) receiving metadata information from the network
   element about these packet samples, and the structure of said stream
   metadata.  A main design requirement is to provide network elements
   with widely varying capabilities (e.g., ASICs, NPUs, NICs, vSwitches,
   CPUs) a mechanism to sample and export packets at high rates, by
   allowing communication of the specific bit formats of internal data
   headers applied to the packet flow, in a way that enhances
   interoperability between traffic sources and sinks.  Historically,
   Netflow and similar mechanisms have been used for these use cases;
   however, the increasing packet rates of very high-speed devices and
   increasing variance in the information available to data planes lends
   itself to both a less-prescriptive set of packet formats as well as a
   decoupling of the sampling action from the collection and analysis
   mechanisms.

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
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   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on 7 May 2020.

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Copyright Notice

   Copyright (c) 2019 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

   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  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   3
     1.2.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   3
     1.3.  Motivation for Disaggregation of Telemetry  . . . . . . .   3
   2.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . .   4
     2.1.  Use Case 1: Traffic Analytics . . . . . . . . . . . . . .   5
     2.2.  Use Case 2: Network Behavior Verification . . . . . . . .   5
     2.3.  Use Case 3: Standardization . . . . . . . . . . . . . . .   6
     2.4.  Use Case 4: Security Automation . . . . . . . . . . . . .   6
   3.  Stream Setup  . . . . . . . . . . . . . . . . . . . . . . . .   7
     3.1.  Client queries Replicator for Points  . . . . . . . . . .   7
     3.2.  Client submits a request to the Replicator  . . . . . . .   8
     3.3.  Replicator offers Proposals . . . . . . . . . . . . . . .   9
     3.4.  Client selects a Proposal . . . . . . . . . . . . . . . .  10
     3.5.  Ending sampling and cleanup . . . . . . . . . . . . . . .  10
   4.  Data Stream Format  . . . . . . . . . . . . . . . . . . . . .  10
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  14
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  14
   7.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  15
   8.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  15
     8.1.  Normative References  . . . . . . . . . . . . . . . . . .  15
     8.2.  Informative References  . . . . . . . . . . . . . . . . .  15
   Appendix A.  Yang Model Tree Reference  . . . . . . . . . . . . .  15
   Appendix B.  Yang Model . . . . . . . . . . . . . . . . . . . . .  17
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  35

1.  Introduction

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