Service Function Chaining Use Cases in Mobile Networks

Document Type Active Internet-Draft (sfc WG)
Last updated 2016-10-13
Replaces draft-haeffner-sfc-use-case-mobility
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Service Function Chaining                                    W. Haeffner
Internet-Draft                                                  Vodafone
Intended status: Informational                                 J. Napper
Expires: April 14, 2017                                    Cisco Systems
                                                          M. Stiemerling
                                                                D. Lopez
                                                          Telefonica I+D
                                                               J. Uttaro
                                                        October 11, 2016

         Service Function Chaining Use Cases in Mobile Networks


   This document provides some exemplary use cases for service function
   chaining in mobile service provider networks.  The objective of this
   draft is not to cover all conceivable service chains in detail.
   Rather, the intention is to localize and explain the application
   domain of service chaining within mobile networks as far as it is
   required to complement the problem statement [RFC7498] and
   architecture framework [RFC7665] of the working group.

   Service function chains typically reside in a LAN segment which links
   the mobile access network to the actual application platforms located
   in the carrier's datacenters or somewhere else in the Internet.
   Service function chains (SFC) ensure a fair distribution of network
   resources according to agreed service policies, enhance the
   performance of service delivery or take care of security and privacy.
   SFCs may also include Value Added Services (VAS).  Commonly, SFCs are
   typical middle box based services.

   General considerations and specific use cases are presented in this
   document to demonstrate the different technical requirements of these
   goals for service function chaining in mobile service provider

   The specification of service function chaining for mobile networks
   must take into account an interaction between service function chains
   and the 3GPP Policy and Charging Control (PCC) environment.

Haeffner, et al.         Expires April 14, 2017                 [Page 1]
Internet-Draft          SFC Use Cases in Mobility           October 2016

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   document are to be interpreted as described in [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
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   Drafts is at

   Internet-Drafts are draft documents valid for a maximum of six months
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   time.  It is inappropriate to use Internet-Drafts as reference
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   This Internet-Draft will expire on April 14, 2017.

Copyright Notice

   Copyright (c) 2016 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
   ( in effect on the date of
   publication of this document.  Please review these documents
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   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Terminology and abbreviations . . . . . . . . . . . . . .   3
     1.2.  General scope of mobile service chains  . . . . . . . . .   4
     1.3.  General structure of end-to-end carrier networks  . . . .   5
   2.  Mobile network overview . . . . . . . . . . . . . . . . . . .   6
     2.1.  Building blocks of 3GPP mobile LTE networks . . . . . . .   7
     2.2.  Overview of mobile service chains . . . . . . . . . . . .   8
     2.3.  The most common classification scheme . . . . . . . . . .  10
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