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].
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/.
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 September 14, 2017.
Copyright Notice
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
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
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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