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SD-WANleveraging SDN and NFV
for Network Agility
Matt AllcoatChief Architect AMEA
BT Global Services
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We understand the market and where you want to go
The drivers behind SD-WAN
Market and Industry drivers
• New operational models – devops, automate everything
• New security threats – highly professional attackers
• New commercial models – pay-as-you-use, XaaS
• New services – customer self service, SD-WAN
• New automation techniques and standards – YANG, TOSCA, Open-O, open configuration
• New network technologies – SDN, MPLS-SR, NFV
• New fixed and mobile access technologies – G.Fast, FTTP, 5G.
Customer drivers
• Making your corporate strategy digital-centric
• Becoming service- and outcome-led
• Being analytics driven
• Moving to the cloud
• Reducing costs
• Being able to deploy quickly, turn up, expand, contract, and turn down services
• Protecting your digital assets / services given the new attack surface
• Leveraging x-as-a-service, such as employee collaboration tools
• Focusing on risk, cost, security agility, control and experience.
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…and selecting the right solutions
Developing an SD-WAN strategy
Dynamicservice creation
AGILITYIntent Based
Systems
CONTROLBig Data withFlow Analytics
SECURITYSoftware
Defined Resourcing
COST
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Hybrid
Roadmap
Insight Evolution…
Dynamic
Why it matters
Application Performance Management
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Why it matters
Application Performance Management
HybridInfrastructureRoadmap
Drives transformation
LandscapeTomorrow
InsightApplication led
RequirementsUser and Business
PlatformsHybridised
LandscapeToday
DynamicInfrastructure
CommercialBalance
SoftwareDefined
ConsumeOn demand
NetworkHybridised
Closed loopProcesses
MachineLearning
Autonomic
Systems
AppsHybridised
Digital TXGoals
Data
Analytics
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In real time, with agility and cost control
Guaranteeing user experience on critical apps
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…where diversity is king if you need to cover all the bases.
Form Factors
NSG-E Small Branch Appliance
VSG Data Centre Appliance
NSG-X Large Branch Appliance
NSG-V on BT Connect Edge and Services Platform
NSG-P Virtual Appliance running on reference x86
BT Agile Connect Service Components
Virtual Services
Directory
Virtual Services
Controller
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Dynamic Networks, Dynamic Clouds
Where we see it all going
Physical
Transport
network layer
NFV- Enabled
Cloud Service Node
NFV- Enabled
Connect Edge
NFV
NFVHybrid Transport Network
• Multiple transport networks, ranging from BT’s MPLS and
optical networks, to customers’ networks, to public Internet.
As suited to each site type.
• Interconnects to BT services, Data centres, 3rd party
providers and networks.
• NFV infrastructure.
Service Management and Presentation
• BT Next Generation Agile OSS.
• Network services managed through model-driven OSS. At the
heart of this is TOSCA-based orchestration and YANG-based
activation.
• Clean abstraction of network services, to allow decoupling
from commercial presentation.
• Digital service presentation of services, allowing real-time
management of service.
Centralised SDWAzN
Control and Policy
Management
SDN Overlay Network
• SDN overlay to transport networks, providing single coherent
E2E policy management and configuration for customer’s
network.
• Allowing extension out to 3rd party data centres and service
providers.
• Allowing strengths of each transport network to be accessed,
but via single E2E policy view.
Network Service
Models
Model-driven
network
Digital UXUser Interaction
Digital Service Environment
• Human to Machine, Machine to Machine, Machine to Human
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▪ SD-WAN - Leveraging SDN/NFV for Network Agility
▪ Understanding the drivers behind SD-WAN
▪ Developing an SD-WAN strategy and selecting the right solutions
▪ Why Application Performance Management matters
▪ Examining the diverse form factors needed to manage large scale
deployment, including virtualized solution
▪ Guaranteeing the user experience on critical application, in real time in
an agile mode whilst controlling the cost