SDN & NFV contributions towards 5Gs3.amazonaws.com/JuJaMa.UserContent/5883cab9-641a...key capabilities Will bring together wireless terrestrial, wired and satellite communications,

SDN & NFV contributions

towards 5G

Francisco Fontes, PT ALB/CTI3 2016.Jun.30

www.alticelabs.com

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Presentation outline

PTP/ALB presentation

5G Context

NFV and SDN objectives

Software Defined Operator

NFV/SDN related fora

NFV/SDN defined 5G architecture

Challenges

Final notes

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Altice Labs profile

R&D branch of PT Portugal (PTP) group of companies

Former PT Inovação, changed name after PTP’s acquisition by Altice Group (Jun/15)

65 years old company, always with a strong focus in innovation and development

Altice Labs will lead the innovation process for the different Altice operations on the

four continents in the world.

Headquartered in Aveiro and has offices in France, Israel, Dominican Republic and

United States

Researchers and experts in Telecommunications, with advanced skills

PhDs, Masters, MBA & Post-graduate degrees; technological certifications

http://altice.net/altice-group/

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5G context

5G will enable “a seamlessly connected society in the 2020

timeframe and beyond that brings together people along with

things, data, applications, transport systems and cities in a smart

networked communications environment” see usage scenarios

A set of capabilities have been identified, with associated targets to

be achieved, focusing in performance for radio interfaces see

key capabilities

Will bring together wireless terrestrial, wired and satellite

communications, around a common network architecture, where

‘softwarization’ will play a major role

Besides a new radio interface, ‘5G’ needs a new network

architecture; together they shall answer the requirements set by

ITU-T in IMT-2020

Moving from a “one-size-fits-all” network, where applications adapt

to the network, to tailored virtual networks answering to the needs

of specific applications by means like NFV, SDN, and network

slicing

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NFV – Network Functions Virtualisation

Virtualized COTS Infrastructure

DPI Software

Router Software

CDN Software

Firewall Software

CPE Software

PCRF Software

Network Functions Virtualisation is a tool for …

Network Virtualization Approach

• TCO reduction: Lower cost of COTS, Rational Infrastructure Sizing

• Lower TTM: Virtualized Network Functions are software components

(agility to create) and able to be deployed through automated generic processes over existing infrastructure (agility to deploy)

• Service Innovation: Normalized Application Environment Agility to launch, evaluate, maintain or retire new service

functionality (try & see model, like OTT) Ability to chain multiple (micro) services to create new

customer services

• Self Service, Service Personalization, Network Openness: Network Services are software applications easily

configured by Northbound API’s

All-IP & All-IT Network Evolution to IT Cloud Infrastructure

IT Management practices integrated in Operations

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SDN – Software Defined Networks

Programmable Data Plane leveraged by centralized control logic

SDN Controller(s)

End-2-End Service Centric Control

Control Plane

Network Equipment

Data Plane

Network Equipment

Network Equipment

Data Plane

Network Equipment

Application Application Application …

• Lower TTM: SDN Controllers, aka, Network Operating Systems, defined

a “standard” application framework that supports agile creation and maintenance of Service Control Applications

• Service Innovation: Agility to create and deploy new Control Applications and

functionality Placement of new control functionalities have none or very

limited impact in the IP connectivity fabric

Software Defined Networks is a tool for …

• TCO reduction: Lower investment for services innovation Data Plane Centric Network Equipments evolution to

“White Boxes” programmable through OpenFlow by Control Applications

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1. Service Agility and New Business Models Faster service cycle innovation: New services or applications available to the

customers

Accelerate Time-to-Market: Fast service provisioning or auto-provisioning

Open APIs: Software-based innovation and openness

Promote Network Slicing as a new service, NFVaaS for Corporate segment or IoT

verticals

2. Operational Savings Network simplification and consolidation: less resource effort to plan, operate and

manage networks

Energy efficiency, space utilization and resource allocations: Resource optimization

with NFV Engine

Network elasticity utilization: Ability to instantiate network resource where they are

available.

Efficiency utilization planning: Planning network resources from peak to average

utilization

Dynamic capacity planning: Ability to flexibly scale network capacity up or down as

network traffic increases/decreases

Advantages of a “Software Defined” Operator

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App

Virtualization layer

HW

• Single Application/VNF • Static VMs • Static virtual infrastructure

management • Node Oriented

App

Virtualization layer

HW

App

Virtualization layer

HW

NFV 0.5 Pre-ETSI

HW

App App App

HW

OSS

MANO

Virtualization Platform

PNF

EM EM

• Dynamic orchestration with Scale in/out and redundancy

• OSS integrated • E2E Service Fulfillment

NFV 2.0 ETSI W MANO

• Service Assurance • Fault correlation, root cause analysis,

service impact analysis • SLA management • Security management

HW

App App App

HW

OSS

Virtualization Platform

PNF

EM EM

NFV 3.0 Service Assurance

MANO

Assurance

• Multiple Applications/VNFs • Dynamic VMs • Infrastructure management

with scale in/out • Cloud oriented

Virtualization layer

HW

App App App

HW

VIM

OSS

EM EM EM

NFV 1.0 ETSI W/O MANO

SD Operator Virtualization Platform Evolution

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IT Services (I/P/SaaS) Automated Lifecycle

Management

SDN for Dynamic DC

Network (DCN) Mgmt.

IT services Virtualization

NE’s use COTS NFV

(NFs over Cloud Infrastructure)

SDN for Dynamic VNF

Chaining in the DC

NE’s are engineered appliances

Phase 2: Network & IT Convergence

Phase 3: Network & IT Full Integration

Phase 1: Network & IT Segregation

Cloud Provider

Telco Provider

Telco 2020

Integrated Cloud & Network

Provider

Network Evolution

Cloud Evolution

SDN for WAN & Access Network

Control

SDN/NFV technology adoption timeline

NE’s use virtualized environments over COTS

Telco functions

delivered aaS

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Standard Organization & Industry Fora

Create a living blueprint for a new generation of service provider support systems (NFV/SDN based) to deliver business agility and new digital services

Design principles and the high-level functional decomposition of the NFV (Network Functions Virtualization) and MEC (Mobile Edge Computing) architectures

Multiple activities: Service Function Chaining (SFC), NFV Research Group (NFVRG), SDN Research Group (SDNRG), NETCONF, YANG, …

Evolution of 3GPP mobile network architecture towards 5G goals, which encompass a widespread utilization of NFV/SDN paradigm (e.g. EPC SDN-ification)

Evolution of the broadband network systems towards the NFV/SDN paradigm, namely on transport and fixed access networks

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Open Source Initiatives (I)

Cloud operating system that controls large pools of compute, storage, and networking resources throughout a datacenter

Carrier-grade, integrated platform (OpenStack, OpenDayLight, …) to deploy NFV/SDN-based services – under the scope of the Linux Foundation

Platform for programmable, software-defined networks – under the scope of the Linux Foundation

Platform for programmable, software-defined networks – under the scope of the Open Networking Lab (ON.Lab)

Open standards development through the adoption of software-defined networks

Introduces the OpenFlow standard, which enables remote programming of the forwarding plane

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Open Source Initiatives (II)

ETSI-hosted project to develop an Open Source NFV Management and Orchestration (MANO) software stack aligned with ETSI NFV

Libraries and drivers for fast packet processing (data path) in Linux

Multilayer virtual switch designed to enable massive network automation through programmatic extension

Central Office Re-architected as a Datacenter (CORD) – leverages SDN and NFV to promote the use of commodity hardware to support flexible and rapid service creation (focus on fixed access

networks)

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High-level IMT-2020 network architecture

Figure from: ITU-T FG IMT-2020, Report on Standards Gap Analysis

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EU 5G-PPP: Combined NFV/SDN orchestration platform

• Multiple technological

domains

• Multiple Operator

domains

• Functional

decomposition of

network functions into

Reusable Functional

Blocks (RFB)

• Intra-domain building

blocks composition

• Multi, inter-domain

composition

• e2e slicing

Customer

Virtualization layer

Customer

Physical resources

Radionetworks

Opticalnetworks

...

Virtualized resources

Virtualized infrastructure

Virtualized network functions

OSS/BSS Management & orchestration

Single-domain orchestrator

Orchestration monitor

Orchestration security

Orchestrationcontroller

Repository

VNO1(Virtual network

operator)

VNO2 VNOn

SDN controller

SDN controllerSDN app

SDN controllerSDN controllerSDN controller

PNFPNFPNF

PNFPNF

PNF(Physical network function)

Service developer

Multi-domain orchestration

Single-domain orchestration

API APIAPI

API/SDKAPI/SDKAPI/SDK

APIAPI

API

API

API

API

API

API

API

Corenetworks

Resource orchestration

Data centers

VNF(vCaches)

VNF(vCaches)

VNF(vSwitches)

VNF(vSwitches)

VNF(vSwitches)

VNF(...)

VSF(s)(Firewall…)

VSF(s)(Firewall…)

VSF(s)(Virtual security

function)(Firewall…)

VNF(vSwitches)

VNF(vSwitches)

MECapp

...

MEC appmanager(s)

VNF manager(s)

VI manager

Multi-domain ochestrator Multi-domain ochestrator Multi-domain ochestrator

Figure from 5G-PPP: https://5g-ppp.eu/wp-content/uploads/2014/02/5G-PPP-5G-Architecture-WP-For-public-consultation.pdf

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EU 5G-PPP: Software network technologies in 5G overall architecture

Resource abstraction and virtualization layer

Networking slice layer

Software network service chain layer

Service layer

Ma

nag

em

en

t an

d o

rch

est

rati

on

Flexible function split & slicing

5G radio

IoT radio

Other radio

API

APIRANVNF

Physical infrastructure

logical infrastructure

Software network functions

Service orchestration

Radio access network Transport network Core Network

Interent

5G network segment

Internet

Transport network

VNF

API

API API API

API

SDN controlle

r

Network cloud

API

API

Core network

VNF

SDN controller

RANVNF

RANPNF

RANPNF

Software-defined mobile controller and coordinator MEC

AppMobile

Edge Cloud

Figure from 5G-PPP: https://5g-ppp.eu/wp-content/uploads/2014/02/5G-PPP-5G-Architecture-WP-For-public-consultation.pdf

Internet & Cloud Core

• NFV/SDN at all

network segments

• Small PoP Data

Centres deployed

at the edge

• APIs provide

services between

different

architecture layers

• Network Slicing

built on network

abstractions,

providing a

virtualized view of

a complete

network

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Operator’s challenges

NFV/SDN implies a major change paradigm in networks and services; full impact across the organization is not yet known.

Operators’ organization resources are not yet prepared for the Telco-IT progressive merge: infrastructure and processes

Existing OSS/BSS will need to develop new interfaces with:

NFV/SDN Management and Orchestration

Cross Orchestration, from legacy services to virtual services built on Telco DC

Operators’ readiness

NFV/SDN technology lack of maturity is a major concern for full implementation

New certification process have to be created for virtual network functions

Vendors NFV/SDN products are still under tests regarding functionalities, security and performance issues

Integration of Open Source components requires time to build a solid base for new ecosystems

Technological Issues

NFV Business Cases are not yet clearly positive

NFV requires considerable new investments, that won’t pay off in the short term

Economics questions still waiting for answer:

Does it increase revenue?

Improve margins?

Reduce churn?

In any and all cases, by how much?

Economic doubts

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Final notes

SDN&NFV provide the required flexibility, agility, programmability, openness, operators

need to be more efficient and be part of the emerging businesses

SDN&NFV technologies are crucial components to provide features like slicing and U/C-

Planes separation

SDN&NFV will be present from the access, to central data centres

SDN&NFV are already, progressively, becoming part of current 4G evolution towards 5G

However these technologies still have to evolve and get mature before can be deployed in

telco grade environments, at full extent, e.g:

• Need for a inter-working MANO architecture components and agree in common

procedures

• Need for a software (VNF) market place

The present document has informational purposes only and does not constitute a formal binding offer. The information conveyed does not constitute an undertaking to sell the identified products and services. The present document is subject to change without notice and Altice Labs cannot be held liable for any possible error or

outdated information or for losses or damages of whatever nature resulting from the use of the information.

Francisco Fontes, PT [email protected] (+351) 234 403 440