A Coordinated Forwarding Method for Hierarchical SFC
draft-xu-sfc-coordinated-forwarding-01

Document Type Active Internet-Draft (individual)
Last updated 2016-10-20
Stream (None)
Intended RFC status (None)
Formats plain text pdf html bibtex
Stream Stream state (No stream defined)
Consensus Boilerplate Unknown
RFC Editor Note (None)
IESG IESG state I-D Exists
Telechat date
Responsible AD (None)
Send notices to (None)
Service Function Chaining                                       Qi Xu
Internet Draft                                            Huachun Zhou
Intended status: Informational                              Taixin Li
Expires: April 2017                                       Guanglei Li
                                                           Guanwen Li
                                           Beijing Jiaotong University
                                                       October 21, 2016

            A Coordinated Forwarding Method for Hierarchical SFC
                draft-xu-sfc-coordinated-forwarding-01.txt

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), its areas, and its working groups.  Note that
   other groups may also distribute working documents as Internet-
   Drafts.

   Internet-Drafts are draft documents valid for a maximum of six
   months and may be updated, replaced, or obsoleted by other documents
   at any time.  It is inappropriate to use Internet-Drafts as
   reference material or to cite them other than as "work in progress."

   The list of current Internet-Drafts can be accessed at
   http://www.ietf.org/ietf/1id-abstracts.txt

   The list of Internet-Draft Shadow Directories can be accessed at
   http://www.ietf.org/shadow.html

   This Internet-Draft will expire on April 21, 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
   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document. Please review these documents
   carefully, as they describe your rights and restrictions with
   respect to this document. Code Components extracted from this
   document must include Simplified BSD License text as described in

Xu                     Expires April 21, 2017                 [Page 1]
Internet-Draft   draft-xu-sfc-coordinated-forwarding       October 2016

   Section 4.e of the Trust Legal Provisions and are provided without
   warranty as described in the Simplified BSD License.

Abstract

   Hierarchical SFC is a network architecture for implementing SFC the
   chain with an ordered set of service functions which could be
   deployed in multiple geographically dispersed networks. How to
   forward traffic between networks in Hierarchical SFC is what the
   draft wants to present.

   This document proposes a mapping-based forwarding method with
   coordinated orchestration by the translation of H-SFC and I-SFC to
   forward traffic between networks in Hierarchical SFC.

Table of Contents

   1. Introduction ................................................ 2
      1.1. Assumptions ............................................ 3
      1.2. Requirements Language................................... 3
   2. Terminology ................................................. 3
   3. Coordinated forwarding ...................................... 3
      3.1. Hierarchical Control Planes ............................ 4
         3.1.1. C5: Interface between SFC Control Planes .......... 5
         3.1.2. Interface between SFC Control Planes and IBN ...... 5
      3.2. Mapping-based forwarding method ........................ 5
   4. Metadata Consideration ...................................... 7
   5. Security Considerations ..................................... 8
   6. IANA Considerations ......................................... 8
   7. References .................................................. 8
      7.1. Normative References ................................... 8
      7.2. Informative References ................................. 8
   Authors'Addresses ............................................. 10

1. Introduction

   Hierarchical SFC is a network architecture for implementing SFC the
   chain with an ordered set of service functions which could be
   deployed in multiple geographically dispersed networks. Hierarchical
   SFC is described in detail in [I.D. dolson-sfc-hierarchical] and
   [I.D.ao-sfc-for-dc-interconnect], and is not repeated here.

   Because of hierarchical SFC supports service decomposition which
   means a SF chained by a SFC can be decomposed into several more
   refined SFs, a SF might be logical wherever it is deployed. So it is

Xu                     Expires April 21, 2017                 [Page 2]
Internet-Draft   draft-xu-sfc-coordinated-forwarding       October 2016

   necessary to check the availability of SFs especially those logical
Show full document text