SDN Layers and Architecture Terminology
draft-haleplidis-sdnrg-layer-terminology-03

The information below is for an old version of the document
Document Type Active Internet-Draft (individual)
Last updated 2013-12-05
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)
SDNRG                                                      E. Haleplidis
Internet-Draft                                                S. Denazis
Intended status: Informational                      University of Patras
Expires: June 8, 2014                                     K. Pentikousis
                                                                    EICT
                                                           J. Hadi Salim
                                                       Mojatatu Networks
                                                                D. Meyer
                                                                 Brocade
                                                          O. Koufopavlou
                                                    University of Patras
                                                        December 5, 2013

                SDN Layers and Architecture Terminology
              draft-haleplidis-sdnrg-layer-terminology-03

Abstract

   Software-Defined Networking (SDN) can in general be defined as a new
   approach for network programmability.  Network programmability refers
   to the capacity to initialize, control, change, and manage network
   behavior dynamically via open interfaces as opposed to relying on
   closed-box solutions and propietary-defined interfaces.  SDN
   emphasizes the role of software in running networks through the
   introduction of an abstraction for the data forwarding plane and, by
   doing so, separates it from the control plane.  This separation
   allows faster innovation cycles at both planes as experience has
   already shown.  However, there is increasing confusion as to what
   exactly SDN is, what is the layer structure in an SDN architecture
   and how do layers interface with each other.  This document aims to
   answer these questions and provide a concise reference document for
   SDNRG, in particular, and the SDN community, in general, based on
   relevant peer-reviewed literature and documents in the RFC series.

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
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

Haleplidis, et al.        Expires June 8, 2014                  [Page 1]
Internet-Draft   SDN Layers and Architecture Terminology   December 2013

   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."

   This Internet-Draft will expire on June 8, 2014.

Copyright Notice

   Copyright (c) 2013 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 Section 4.e of
   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
     1.1.  Terminology . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  SDN Layers and Architecture . . . . . . . . . . . . . . . . .   5
     2.1.  Overview  . . . . . . . . . . . . . . . . . . . . . . . .   6
     2.2.  Network Devices . . . . . . . . . . . . . . . . . . . . .   8
     2.3.  Control Plane . . . . . . . . . . . . . . . . . . . . . .   9
     2.4.  Management Plane  . . . . . . . . . . . . . . . . . . . .  10
     2.5.  Service Abstraction Layer . . . . . . . . . . . . . . . .  11
     2.6.  Application Plane . . . . . . . . . . . . . . . . . . . .  11
   3.  SDN Model View  . . . . . . . . . . . . . . . . . . . . . . .  12
     3.1.  ForCES  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     3.2.  NETCONF . . . . . . . . . . . . . . . . . . . . . . . . .  13
     3.3.  OpenFlow  . . . . . . . . . . . . . . . . . . . . . . . .  14
     3.4.  I2RS  . . . . . . . . . . . . . . . . . . . . . . . . . .  14
     3.5.  BFD . . . . . . . . . . . . . . . . . . . . . . . . . . .  15
   4.  Acknowledgements  . . . . . . . . . . . . . . . . . . . . . .  15
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  16
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  16
   7.  Informative References  . . . . . . . . . . . . . . . . . . .  16
Show full document text