Multi-domain Service Function Chaining with ALTO
draft-lachos-sfc-multi-domain-alto-00

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Last updated 2020-03-10
Replaces draft-lachos-multi-domain-sfc-alto
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SFC WG                                                         D. Lachos
Internet-Draft                                                   Unicamp
Intended status: Informational                                  Q. Xiang
Expires: September 11, 2020                       Tongji/Yale University
                                                           C. Rothenberg
                                                                 Unicamp
                                                                 Y. Yang
                                                  Tongji/Yale University
                                                          March 10, 2020

            Multi-domain Service Function Chaining with ALTO
                 draft-lachos-sfc-multi-domain-alto-00

Abstract

   The delivery of network services often require service functions and
   their specific order, called a service function chain (SFC).  A SFC
   request is usually composed by distributed resources which are
   expected to available across multiple domains with different
   technology and/or administration.  This document describes different
   standardization activities and research projects addressing the
   challenges posed by SFC across multiple domains (specifically,
   multiple administrative domains).  In addition, this document
   presents an initial approach to realize inter-domain service chains
   leveraging the Application Layer Traffic Optimization (ALTO)
   protocol.  Finally, another important concern of this document is to
   initiate a discussion (ALTO, SFC as well as other WGs) regarding if,
   how, and under what conditions ALTO can be useful to improve the
   multi-domain SFC process.

Status of This Memo

   This Internet-Draft is submitted in full conformance with the
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   Internet-Drafts are working documents of the Internet Engineering
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   This Internet-Draft will expire on September 11, 2020.

Lachos, et al.         Expires September 11, 2020               [Page 1]
Internet-Draft         Multi-domain SFC with ALTO             March 2020

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Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   4
   3.  Context and Motivation  . . . . . . . . . . . . . . . . . . .   4
     3.1.  Standardization Activities  . . . . . . . . . . . . . . .   4
       3.1.1.  IETF  . . . . . . . . . . . . . . . . . . . . . . . .   4
       3.1.2.  ETSI  . . . . . . . . . . . . . . . . . . . . . . . .   5
       3.1.3.  MEF . . . . . . . . . . . . . . . . . . . . . . . . .   5
     3.2.  Research projects . . . . . . . . . . . . . . . . . . . .   5
   4.  ALTO for Multi-domain SFC . . . . . . . . . . . . . . . . . .   6
     4.1.  Advantages of using ALTO  . . . . . . . . . . . . . . . .   7
       4.1.1.  Inter-domain info discovery with ALTO Property Map  .   7
       4.1.2.  Inter-domain path computation with ALTO Cost Map  . .   7
     4.2.  Motivating Use Cases  . . . . . . . . . . . . . . . . . .   8
       4.2.1.  ALTO as part of the SFC eXchange Platform . . . . . .   8
       4.2.2.  Resource Orchestration for Multi-Domain, Geo-
               Distributed Data Analytics  . . . . . . . . . . . . .  10
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  12
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  12
   7.  Summary and Outlook . . . . . . . . . . . . . . . . . . . . .  13
   8.  Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  13
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . .  13
     9.1.  Normative References  . . . . . . . . . . . . . . . . . .  13
     9.2.  Informative References  . . . . . . . . . . . . . . . . .  14
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  16
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