Service Function Chaining (SFC): Subscriber and Host Identification Considerations
draft-sarikaya-sfc-hostid-serviceheader-01

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Replaced by draft-sfc-serviceid-header
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Network Working Group                                        B. Sarikaya
Internet-Draft                                                    Huawei
Intended status: Standards Track                             D. von Hugo
Expires: September 22, 2016              Telekom Innovation Laboratories
                                                            M. Boucadair
                                                                  Orange
                                                          March 21, 2016

  Service Function Chaining (SFC): Subscriber and Host Identification
                             Considerations
             draft-sarikaya-sfc-hostid-serviceheader-01.txt

Abstract

   This document discusses considerations related to passing 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 functional elements,
   the information is stripped from packets so that privacy-sensitive
   information is not leaked outside an SFC-enabled domain.

Status of This Memo

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   This Internet-Draft will expire on September 22, 2016.

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Sarikaya, et al.       Expires September 22, 2016               [Page 1]
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   carefully, as they describe your rights and restrictions with respect
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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Conventions and Terminology . . . . . . . . . . . . . . . . .   3
   3.  Problem Space and Sample Use Cases  . . . . . . . . . . . . .   3
     3.1.  Parental Control Use Case . . . . . . . . . . . . . . . .   4
     3.2.  Traffic Offload Use Case  . . . . . . . . . . . . . . . .   5
     3.3.  Mobile Network Use Cases  . . . . . . . . . . . . . . . .   5
   4.  Host and Subscriber Identification SFC Meta Data  . . . . . .   5
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .   7
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .   7
   7.  Privacy Considerations  . . . . . . . . . . . . . . . . . . .   7
   8.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .   8
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .   8
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .   8
     9.2.  Informative References  . . . . . . . . . . . . . . . . .   8
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .   9

1.  Introduction

   This document adheres to the architecture defined in [RFC7665].  This
   document assumes the reader is familiar with [RFC7665] and
   [I-D.ietf-sfc-control-plane].

   This document focuses on aspects related to passing host- and
   subscriber-related information to upstream SFs when required for the
   sake of policy enforcement.  Indeed, subscriber-related information
   may be needed for upstream service functions (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.

   Host-related information may be required to implement services such
   as Traffic policy control, or Parental Control Function and Traffic
   Offload that are commonly used by operators to enable advanced
   services to the customers used in typical home network architectures
   [I-D.liu-sfc-use-cases].

   Another typical example is the applicability of service chaining in
   the context of mobile networks (typically, in the 3GPP defined (S)Gi
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