Inter-SDN (SDNi) in Seamless MPLS for Mobile Backhaul Network
draft-li-rtgwg-sdni-seamless-mpls-mbh-00

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Network Working Group                                              Z. Li
Internet-Draft                                                     K. Lu
Intended status: Informational                       Huawei Technologies
Expires: September 14, 2017                               March 13, 2017

     Inter-SDN (SDNi) in Seamless MPLS for Mobile Backhaul Network
                draft-li-rtgwg-sdni-seamless-mpls-mbh-00

Abstract

   This document introduces the inter-SDN framework of Seamless MPLS to
   integrate the mobile backhaul network with the core network.

Requirements Language

   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
   "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
   document are to be interpreted as described in RFC 2119 [RFC2119].

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   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

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   This Internet-Draft will expire on September 14, 2017.

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   Copyright (c) 2017 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
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Li & Lu                Expires September 14, 2017               [Page 1]
Internet-Draft        SDNi in Seamless MPLS for MBH           March 2017

   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
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Requirements  . . . . . . . . . . . . . . . . . . . . . . . .   3
   4.  Framework . . . . . . . . . . . . . . . . . . . . . . . . . .   3
     4.1.  Inter-SDN Architecture  . . . . . . . . . . . . . . . . .   4
     4.2.  Procedures  . . . . . . . . . . . . . . . . . . . . . . .   5
       4.2.1.  Traffic Optimization in Each Domain . . . . . . . . .   5
       4.2.2.  End-to-End Traffic Optimization . . . . . . . . . . .   7
       4.2.3.  End-to-End Service Provision  . . . . . . . . . . . .   8
       4.2.4.  Auto Discovery  . . . . . . . . . . . . . . . . . . .   9
   5.  IANA Considerations . . . . . . . . . . . . . . . . . . . . .  10
   6.  Security Considerations . . . . . . . . . . . . . . . . . . .  10
   7.  Informative References  . . . . . . . . . . . . . . . . . . .  10
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  11

1.  Introduction

   Seamless MPLS [I-D.ietf-mpls-seamless-mpls] describes an architecture
   which can be used to extend MPLS networks to integrate access and
   core/aggregation networks into a single MPLS domain.  It provides a
   highly flexible and a scalable architecture and the possibility to
   integrate 100.000 of nodes.  One of the key elements of Seamless MPLS
   is the separation of the service and transport plane: it can reduce
   the service specific configurations in network transport node.

   The main purpose of Seamless MPLS is to deal with the integration of
   access networks and core/aggregation networks.  The typical access
   devices taken into account are DSLAM(Digital Subscriber Link Access
   Multiplexer), etc.  Now the mobile backhaul service has been deployed
   widely, the requirement of the integration of mobile backhaul
   networks and core networks has been proposed.  At the same time, SDN
   is being developed to facilitate network operation and management.
   In the seamless MPLS for mobile backhaul, since there are multiple
   domains including the core network and multiple mobile backhaul
   networks, when SDN is introduced, for each domain there maybe one
   controller.  In order to implement the end-to-end network service
   provision, there should be orchestration among multiple controllers.
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