Mission Statement:

This Work Area focuses on the introduction of Software Defined Networking (SDN) and Network Functions Virtualization (NFV) in conjunction with general purpose hardware create the basis for cloud based platform.  Building on this framework, projects address  migration and coexistence of physical and virtual elements, into the broadband network, define interfaces, test cases Use Cases and scenarios, reference implementations and automation.  Activities work with and coordinate with Open Broadband (OB) program regarding open source e.g. Open Broadband-Broadband Access Abstraction (OB-BAA) and testing Open Broadband Laboratories (OBLs). These efforts demonstrate how standards organizations and open source projects can collaborate.

Work Area Directors: Bruno Cornaglia (Vodafone) and Mengmeng Li (China Mobile)

Business Impact:

The migration to SDN and NFV in the broadband network facilitates agile deployment of new customized distributed broadband services and applications. This enables new revenues and provider differentiation while managing OpEx both in the access network and in single and multi-tenant residential and business locations.

Scope:

The scope includes migration to and deployment of SDN- and NFV-enabled implementations across all aspects of the broadband network. Building on the initial architectural definition of and extensions to the BNG framework has led to new definition and requirements for Cloud-based Central Office (CloudCO).   It provides architectural cornerstone for next generation broadband networking with dis-aggregation of functions which enable changes to the traditional boundary of a Central Office, and enables a new generation of Access Nodes based on CloudCO framework.  The set of deliverables below build on CloudCO addressing migration, new Access Nodes, and Automated Intelligent Management (AIM).

SDN and NFV Work Area Email Lists


See also:

Project Streams

Project Stream

Description

Non-PS Assigned


Leadership:

Bruno Cornaglia , Vodafone

Projects that don’t fit under the scope of an existing Project Stream or if they fit under the scope of more than one Project Stream, are developed under the Non-PS Assigned category. 

Project Stream
Description

This project stream is developing a next generation Central Office (CO) System that is part of BBF Open Broadband, which incorporates Software Defined Networking and Network Function Virtualization with SDN control & management running on a cloud-like infrastructure deployed at Central Offices.

By ‘cloud-like’, it is meant that the infrastructure leverages commodity network switches and commodity compute nodes with virtualization software to host various virtualized network functions (VNFs). Infrastructure operators can offer these functions to 3rd parties and 3rd party network functions can be inserted into the platform, allowing Value Added Services.

The goal of this project is building on the architectural framework for such a Cloud CO (TR-384), with appropriate abstracted functional modules, and interfaces, eventual API and protocol choices and/or definitions. The architectural framework allows interconnecting these functional modules in an interoperable manner.  A secondary goal is to figure out and shows how standards organizations and open source projects can collaborate. 

This project will also establish a reference implementation of the Cloud CO framework, creating a platform for innovation and potential open source upstreaming into other organizations, as well as a platform for industry interoperability testing (OBL) and certification of NFs and the components that implement the aforementioned functional modules.


TR-384: Cloud Central Office (CloudCO) Reference Architectural Framework

TR/WT/MR/MD/SD#

Projects

Abstract

Related Contributions

Editor(s)

TR-384Cloud Central Office (CloudCO) Reference Architectural FrameworkThis Cloud Central Office (CloudCO) document helps drive a key element of the BBF's strategy in enabling new revenue generating-services. It defines a platform that serves as a

platform for both wireline and wireless networks.  Operators will have the opportunity to run a single network with all varieties of access technologies, and flexibly deploy innovative services. 

Issue 1 is the first phase in a multiphase project defining the high level architectural framework. Related specs include migration, detailed interface definitions, test cases & application notes, use cases & scenarios and reference implementations.

Contributions

Ding Hai (China Unicom)

Georgios Karagiannis (Huawei Technologies)

Projects Building on CloudCO

TR/WT/MR/MD/SD#

Projects

Abstract

Related Contributions

Editor(s)

TR-408Cloud CO Migration and Coexistence

This Cloud Central Office (Cloud CO) document provides guidance to Service Providers as they transform their existing Multi Service Broadband Networks (MSBN) toward a Cloud CO based network that is more adaptable, agile, scalable and dynamic than the existing MSBN, while reducing costs by  retaining investments that the Service Provider has made in their MSBN. 

This document identifies considerations that Service Providers need to consider when determining the deployment strategy of either migrating the existing network or deploying a Cloud CO based network that coexists with the existing MSBN. 

It also provides transformation assistance by identifying approaches to migrating their existing MSBN and discusses when and how to introduce the Cloud CO infrastructure or leverage their existing IT infrastructure. Finally, the document provides examples of how functionality in the management, control and user planes can be migrated toward Cloud CO.

Contributions

Ding Hai (China Unicom)

Tim Carey (Nokia)

TR-411

Definition of interfaces between Cloud CO Functional Modules

This work will define the Interfaces between the Functional Modules in the Cloud CO Architectural Framework, as well as the Cloud CO Northbound API.  Network Transport Protocols will be defined to carry the interface attributes. Furthermore the data models, schemas or APIs that are signaled across them will be defined as well.  Existing Open Interface works, as described in Standards and Open Source work will be leveraged as much as possible.  This project is based on and will grow incrementally, driven by a series of Cloud CO Application Notes (APPNs).  Cloud CO Application Notes will detail how a certain service is instantiated, maintained and consumed across the Cloud CO Architecture and will detail the necessary interactions between the different Functional Modules in the Architectural Framework, as well as the interactions with the Cloud CO Northbound API in order to achieve the necessary end result.

Contributions

Tim Carey (Nokia)

Wei Lin (Huawei)

TR-412

Test Cases for Cloud CO Applications

This work will define Test Cases for Cloud CO Applications.  Cloud CO scenarios are described in Cloud CO Application Notes as well as TR-416.  The Cloud CO Application Notes will detail how a certain service is instantiated, maintained and consumed across the Cloud CO Architecture.  The Test Cases will be consumed by the Open Broadband Labs (OBLs), effectively validating the Cloud CO Application Note.  The development of WT-411 Interfaces, WT-412 Testing and Application Notes are inter-dependent.

Contributions

Ding Hai (China Unicom)

TR-413

WT-413 Issue 2

SDN Management and Control Interfaces for CloudCO Network Functions

In the Cloud CO context, WT-413 specifies the management and control framework of Network Functions and a formalism to specify their NBIs to identify the supported macro functionalities and link them to existing/to-be YANG DMs. This work primarily enables the migration from SNMP/MIB towards NETCONF/YANG interfaces and potentially other protocols to exercise not only traditional FCAPS management functions but also fine grained flow control across VNFs and PNFs network service graphs. This is a key step towards Software Networking introduction and in turn the automation and Orchestration of PNFs and VNFs in a Cloud CO type of architecture.

The development of this Working Text shall also shape the thinking on the way Cloud CO interfaces, especially for VNFs, are modeled and the opportunity to reuse/extend existing YANG work for that.

Contributions

Mauro Tilocca (Telecom Italia)

Tim Carey (Nokia)

TR-435

NETCONF requirements for Access Nodes and Broadband Access Abstraction

This project will develop the NETCONF requirements for the NETCONF/YANG Northbound interfaces (NBIs) of Access Physical Network Functions (PNFs) and the CloudCO BAA layer towards the Management and Control (M&C) elements that interact with them.

Contributions

Ken Kerpez (ASSIA)

Mauro Tilocca (Telecom Italia)


TR-454

YANG Modules for Access Network Map & Equipment Inventory

In a CloudCO architecture, the management of physical nodes requires interfaces to expose Access Network Map (ANM) and Equipment Inventory information to the SDN Management and Control and other CloudCO functional blocks. For the support of multiple tenants, it’s also useful to expose to Tenants only relevant ANM and Equipment Inventory information over the NB API.

The project is defining YANG data models for ANM and Equipment Inventory applicable to the BAA layer and the Access SDN Management and Control.

Contributions

Yang Wenle  Huawei Technologies

                                        Jie Chen 

CAICT

WT-477

Cloud CO Enhancement - Access Node Hardware Disaggregation

Operators want their networks to be adaptable, agile, scalable and dynamic, while reducing costs. Besides reducing CAPEX and OPEX, shortened time-to-market is much more desired. SDN and NFV in conjunction with general purpose hardware are two powerful tools that are exploited in the industry to optimize current networks. In BBF, the CloudCO re-architects the broadband network using the above mentioned technologies running on a cloud-like infrastructure, deployed at Central Offices. It encompasses the enabling work required for dramatically faster and more efficient provisioning of new revenue generating-services. On the other hand, Opensource organizations have a different life-cycle, focused on the implementation of reference features and using immediately available standards which can lead to incomplete, non-compliant and tightly integrated components. The scope of this project is to perform a gap analysis between Cloud-CO and Opensource solution(s) by defining the missing interface(s) between Disaggregated OLT and physical OLT.

 Contributions

Bruno Cornaglia (Vodafone)

Francisco de Carvalho (BT)

WT-484

Access Network Abstraction, Softwarization, and Disaggregation

TBD

Contributions

Mauro Tilocca (Telecom Italia)

Application Notes


Application Notes (APPN) use the TR-384 framework to describe an implementable Use Case for a CloudCO 'application'.  APPN includes

  • Assumptions and Preconditions

  • System Description using TR-384 framework (components) + Drawing

  • Description of Actors

  • Interactions, which describe what information gets exchanged between the TR-384 functional elements and what happens as a result after an actor performs an 'action' i.e., an API call at the CCO NB API or a user plane packet that enters the system.  A ladder diagram shows the various interactions between the functional elements.

  • Success Criteria for the interactions

  • Various instances can be instantiated which detail a given implementation of the individual components 

An Application Note Instance will then be created that details the exact components to be bootstrapped/installed onto an NFVI. ((i.e. it describes what VIM is chosen, etc, as well as e.g software releases etc).  The APPN is then used to guide development of:

  • Interface Descriptions (WT-411)

  • Test Case Descriptions (WT-412)

Application Notes Under Development

Application Notes and how they relate to other work

Coordinated by PSL:

Yves Hertoghs, VMWare
 




Project Stream
Description

Mission

The project stream's mission is to provide specifications and guidance for Cloud-based components used in the broadband network. The specification and guidance provided by this project stream help ensure that Cloud-based Components are multi-vendor and inter-operable. Critical elements of the work provided by this project stream is the support the transition from existing architectures toward Cloud-based architecture and alignment, when applicable, with various Cloud-based architectural frameworks such as Cloud CO.

Business Impact: 

The work of this project stream creates the necessary architectural and interface specifications and associated guidance that enables a multi-vendor, inter-operable set of Cloud-based components that reduces the cost of development and deployment of Cloud-based components through standardized architectures, protocols, APIs and information elements.

Projects

Specifically the project stream covers the following projects and their associated work products:

  • Automated Intelligent Management (AIM):

Description:

Enhance access and home networks with Cloud-based automation and intelligence, to achieve higher O&M efficiency and lower OPEX.

TR/WT/MR/MD/SD#
Projects
Abstract
Resources
Editor(s)
TR-436

Access & Home Network O&M Automation/Intelligence

Over the past decade, growth in the Telco industry’s revenue has never outpaced growth in OPEX. As the scale of a network increases, OPEX increases with it. Therefore, it is expected that work needs to be done in order to reduce OPEX. 

This project will specify the logical framework of access & home network O&M automation, including necessary functional blocks, logical connection descriptions and information flows between the modules. In addition, this work will suggest possible applications of this framework to typical BBF service architectures.

This identifies the information elements required in access & home network O&M automation, key use cases and KPIs, and analysis of the gaps with existing architectures to support these information elements. The project will describe what kinds of the information elements are required.


Working Text


Ken Kerpez ,  ASSIA

WT-486Interfaces for Automated Intelligent Management (AIM)The TR-436 defines the Automated Intelligent Management (AIM) framework for access and home networks management with automation and intelligence,. 
The purpose of this work is to specify the AIM Interfaces, Interfaces Functions and Data Models (DM) that allow the interactions between the AIM components and subsystems. 
Working Text

Ken Kerpez,  ASSIA

Hongyu Li , Huawei


  • Metro Compute Networking (MCN):

Description:

Considers the Edge Computing impacts on multi-service broadband network, reference architecture, interfaces and to identify metro computing networking requirement,

TR/WT/MR/MD/SD#
Projects
Abstract
Resources
Editor(s)
Metro Compute Networking: Use Cases and High Level Requirements 
This project provides a list of use cases with related high level requirements that provides a framework defining a new metro-compute networking architecture with in-depth integration of computing and network on top of the Cloud-based broadband networks, with the purpose of connecting isolated edge sites (e.g. Cloud CO) as one cloud to serve edge computing services, supporting the edge to edge collaboration, the edge to cloud collaboration, and load balancing among edge sites at network level. It includes recommendations for BBF Work Projects.
Working Text
Ruobin Zheng (Huawei Technologies), Bo Lei (China Telecom)
WT-491Metro Compute Networking Architecture, Functional Modules and Interface DefinitionsThis project is follow-on work to TR-466 Metro Compute Networking (MCN): Use Cases and High Level Requirements technical report that defines the reference architecture for metro compute networking that includes specification of the functional modules and nodal requirements related to this architecture consistent with TR-466, TR-384 and TR-178, including the MCN control plane and the MCN data plane in context of MSBN based on both the MEC service functions and the non-MEC service functions, and the MCN integration into the CloudCO architecture for both the MEC service functions and the non-MEC service functions. Addiitonally the project specifies the interfaces and protocols of MCN in order to correlate the computing power information of edge sites (e.g. CloudCO in TR-384) and the network topology information, including the new interfaces or the reference points for the integration of MCN into the MSBN architecture, the new interfaces or reference points for the integration of MCN into the CloudCO architecture for both the MEC service functions and the non-MEC service functions.Working Text

Ruobin Zheng (Huawei Technologies)

Yuexia Fu , China Mobile

  • Virtualized ONU Management (vOMCI):

Description:

Provides the architecture, requirements and interface specifications for a virtualized OMCI (vOMCI) solution that moves the OMCI functionality that is traditionally embedded within Optical Line Termination (OLT) network elements into the operator's Cloud-based network. The project supports various deployment models of the vOMCI solution where functions (i.e., OMCI translation function, OLT & ONU management functions) of the architecture can be deployed as a virtualized network functions and are expected to be used within Access domain SDN management and control solutions (e.g., Broadband Forum’s CloudCO) or as a stand-alone process that can be deployed with existing management system solutions.
TR/WT/MR/MD/SD#
Projects
Abstract
Resources
Editor(s)
WT-451vOMCI Interface Specification

Considers the virtualization of the PON OMCI functionality traditionally residing in the OLT and the related standardization that is needed to achieve interoperability.

The scope of this specification is to provide an architecture for the vOMCI solutions, providing requirements and interface specifications as shown in figure below:

Working Text

Tim Carey (Nokia)

Zhang Dechao (China Mobile)


  • Fixed Access Network Sharing (FANS): 

Description:

FTTx represents today a high-cost technology (in terms of Return on Investments) to enhance data rates to the end customers, but it requires a huge effort, in terms of CAPEX and OPEX for access network deployment. Due to this, some operators have recognized the need to partner in order to improve the return on investment of FTTx deployment.

Sharing the access network infrastructure is a viable way to expand the network and achieve an effective roll-out of new technologies.

FANS delivers one network sharing model with high flexibility for forward looking broadband network deployments and operations, facilitating the business innovation, enhancing the network efficiency and improving customer experience.

FANS also addresses the virtualization of that shared infrastructure such that each operator could have their own virtual access node.


TR/WT/MR/MD/SD#
Projects
Abstract
Resources
Editor(s)

 TR-370 Issue 2

Fixed Access Network Sharing – Architecture and Nodal RequirementsThis Technical Report specifies technical aspects associated with Fixed Access Network Sharing (FANS) that involve the access network (including access nodes and aggregation nodes). It focuses on the cases of Passive Optical Network (PON) and DSL and G. fast access technologies.Working TextBruno Cornaglia , Vodafone

TR-386

Fixed Access Network Sharing - Access Network 
Sharing Interfaces
This Technical Report specifies the system interfaces associated with FANS. This document provides details and the information required to define these interfaces as well as the rules for communicating with them. The interfaces described are defined in TR-370 “FANS – Architecture and Nodal Requirements”.Working Text

Issue 1

Bruno Cornaglia , Vodafone


Issue 2

Haomian Zheng, Huawei

Jan Diestelmans , Nokia 

MR-432Fixed Access Network SharingThis paper examines the potential positive business and operational impact of Fixed Access Network 
Sharing (“FANS”). FANS enables broadband network infrastructure, and network management, to be 
shared amongst operators with resulting cost and standardization benefits along with the opportunity 
to handle a wider variety of service offerings.


MR-453Fixed Access Network Sharing (FANS) Technical OverviewDeep fiber deployments for ultra-fast 
broadband are technically challenging. Broadband 
Forum is defining Fixed Access Network Sharing 
(FANS), to offer a highly enhanced form of virtual 
unbundling of broadband access networks, 
enabling cost sharing and enhancing the dynamics 
of a competitive landscape. FANS automates and 
harmonizes data, control, and management interfaces 
among wholesale Infrastructure Providers (InPs) and 
retail Virtual Network Operators (VNOs). Standardized 
FANS interfaces can decrease operational expense 
(OpEx) while increasing customer satisfaction. FANS 
logically partitions and isolates network resources 
shared among the VNOs, and such sharing can split 
the cost of network upgrades among several entities. 
FANS works with virtualization, where control-plane 
functions are migrated from dedicated network 
equipment into software running on commodity 
hardware, with FANS providing Network as a Service 
(NaaS). This paper describes emerging Broadband 
Forum standards supporting FANS, use cases, 
FANS components, and details of the architectures 
supporting FANS.