Service Function Chaining Use Cases In Data Centers
draft-ietf-sfc-dc-use-cases-06

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Last updated 2017-02-22
Replaces draft-kumar-sfc-dc-use-cases
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Service Function Chaining                                       S. Kumar
Internet-Draft                                       Cisco Systems, Inc.
Intended status: Informational                                 M. Tufail
Expires: August 26, 2017                                            Citi
                                                                S. Majee
                                                             F5 Networks
                                                              C. Captari
                                                     Telstra Corporation
                                                                S. Homma
                                                                     NTT
                                                       February 22, 2017

          Service Function Chaining Use Cases In Data Centers
                     draft-ietf-sfc-dc-use-cases-06

Abstract

   Data center operators deploy a variety of layer 4 through layer 7
   service functions in both physical and virtual form factors.  Most
   traffic originating, transiting, or terminating in the data center is
   subject to treatment by multiple service functions.

   This document describes use cases that demonstrate the applicability
   of Service Function Chaining (SFC) within a data center environment
   and provides SFC requirements for data center centric use cases, with
   primary focus on Enterprise data centers.

Status of This Memo

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   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on August 26, 2017.

Kumar, et al.            Expires August 26, 2017                [Page 1]
Internet-Draft              SFC DC Use Cases               February 2017

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   3
     1.1.  Requirements Language . . . . . . . . . . . . . . . . . .   4
   2.  Definition Of Terms . . . . . . . . . . . . . . . . . . . . .   4
   3.  Use Cases . . . . . . . . . . . . . . . . . . . . . . . . . .   6
     3.1.  Traffic Types . . . . . . . . . . . . . . . . . . . . . .   6
     3.2.  North-South Traffic . . . . . . . . . . . . . . . . . . .   6
       3.2.1.  Sample north-south service function chains  . . . . .   8
       3.2.2.  Sample north-south SFC description  . . . . . . . . .   8
     3.3.  East-West Traffic . . . . . . . . . . . . . . . . . . . .   9
       3.3.1.  Sample east-west service function chains  . . . . . .  10
       3.3.2.  Sample east-west SFC description  . . . . . . . . . .  10
     3.4.  Multi-tenancy . . . . . . . . . . . . . . . . . . . . . .  11
     3.5.  SFCs in data centers  . . . . . . . . . . . . . . . . . .  11
     3.6.  Inter-datacenter SFCs . . . . . . . . . . . . . . . . . .  13
       3.6.1.  Methods for inter-datacenter SFCs . . . . . . . . . .  13
       3.6.2.  Considerations for inter-datacenter SFCs  . . . . . .  16
   4.  Drawbacks Of Existing Service Chaining Methods  . . . . . . .  17
   5.  General Requirements  . . . . . . . . . . . . . . . . . . . .  20
   6.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  21
   7.  Contributors  . . . . . . . . . . . . . . . . . . . . . . . .  21
   8.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  21
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  21
   10. References  . . . . . . . . . . . . . . . . . . . . . . . . .  22
     10.1.  Normative References . . . . . . . . . . . . . . . . . .  22
     10.2.  Informative References . . . . . . . . . . . . . . . . .  22
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