sdn & nfv contributions towards 5gs3.amazonaws.com/jujama.usercontent/5883cab9-641a...key...
TRANSCRIPT
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