Service Function Chaining Service, Subscriber and Host Identification Use Cases and Metadata
draft-sarikaya-sfc-hostid-serviceheader-04

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Network Working Group                                       M. Boucadair
Internet-Draft                                                    Orange
Intended status: Standards Track                             D. von Hugo
Expires: July 20, 2017                   Telekom Innovation Laboratories
                                                             B. Sarikaya
                                                                  Huawei
                                                        January 16, 2017

 Service Function Chaining Service, Subscriber and Host Identification
                         Use Cases and Metadata
             draft-sarikaya-sfc-hostid-serviceheader-04.txt

Abstract

   This document discusses considerations related to passing service-,
   host- and subscriber-related information to upstream Service
   Functions for the sake of policy enforcement and appropriate SFC-
   inferred forwarding.  Once the information is consumed by SFC-aware
   elements of an SFC-enabled domain, the information is stripped from
   packets so that privacy-sensitive information is not leaked outside
   an SFC-enabled domain.

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   This Internet-Draft will expire on July 20, 2017.

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   Copyright (c) 2017 IETF Trust and the persons identified as the
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   This document is subject to BCP 78 and the IETF Trust's Legal
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   (http://trustee.ietf.org/license-info) in effect on the date of

Boucadair, et al.         Expires July 20, 2017                 [Page 1]
Internet-Draft    Service, Subscriber and Hostid in SFC     January 2017

   publication of this document.  Please review these documents
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   4
   3.  Problem Space and Sample Use Cases  . . . . . . . . . . . . .   4
     3.1.  Parental Control Use Case . . . . . . . . . . . . . . . .   5
     3.2.  Traffic Offload Use Case  . . . . . . . . . . . . . . . .   6
     3.3.  Mobile Network Use Cases  . . . . . . . . . . . . . . . .   6
     3.4.  Extreme Low Latency Service Use Cases . . . . . . . . . .   7
     3.5.  High Reliability Applications Use Cases . . . . . . . . .   7
   4.  Host and Subscriber Identification SFC Meta Data  . . . . . .   7
   5.  Slice and Service Identification SFC Meta Data  . . . . . . .  10
   6.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  13
   7.  Security Considerations . . . . . . . . . . . . . . . . . . .  13
   8.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .  13
   9.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  14
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  14
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  14
     10.2.  Informative References . . . . . . . . . . . . . . . . .  15
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16

1.  Introduction

   This document focuses on aspects related to passing service-, host-
   and subscriber-related information to upstream Service Functions
   (SFs) when required for the sake of policy enforcement.  Indeed,
   subscriber-related information may be needed for upstream SFs when
   per-subscriber policies are to be enforced upstream in the network
   while the information conveyed by the original packets does not allow
   for uniquely identifying a host or a subscriber.

   In addition further service- and policy-specific information
   regarding handling of packet flows according to agreed quality and
   performance requests - such as denoted by Quality of Service (QoS) or
   Quality of Experience (QoE) parameters - may be needed, e.g. for
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