Topical Session 7: SD-WAN & Network VirtualizationOrchestrated Service Assurance - An Enabler to Realize the Benefits of Virtualization

22-01-2018

1530-1645Ken Gold

Leader, Solutions Marketing

EXFO

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Operators’ Technology Transformations

Network

Modernization

Cloud

Enablement

Data

AnalyticsVirtualizationVirtualization

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OSS(Service Fulfillment, Configuration, Inventory, Assurance, etc.)

EMS/NMS

(FCAPS)

Radio Ethernet IMSOpticalVirtual

Network

Orchestration &

Control

EMS/NMS

(FCAPS)

EMS/NMS

(FCAPS)

EMS/NMS

(FCAPS)VNFs and VNFI

FCAPS – fault, configuration, accounting, performance, security

Video

Domains & Silos

DPI

Probe

Probe

DPI

Challenge #1: Physical to Hybrid Networks

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Challenge #2: Dedicated to Shared Infrastructure

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Challenge #3: Open to Vertically Integrated

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Service Assurance—A key enabler

Source: Analysis Mason

Physical Network

(PNFs)Virtual Network

(VNFs)

Fulfillment Assurance

Service Management Automation

Standard Virtualized

Customer Portal Operations Portal

Active &

Available

Inventory

Data

Analytics

Network Slice

If you can’t assure the service in an agile way, you can’t virtualize it.

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Virtual Network (VNF’s)

Architecture Evolution

Deprecation of EMS/NMS role in the virtualized environment• Redistribution of the role of “EMS/NMS” in the E2E

Orchestration, Control and Assurance ecosystem

Decoupling instrumentation from the service assurance application• Orchestrator-driven dynamic & on-demand

instantiation/activation of monitors/instrumentation

• Active, Passive, VNF infrastructure

Multi domain End-to-End Service Orchestration

Business Operations and Customers

OSS

VNF infrastructure

VNF manager

SDN Domain

Controller

SDN Domain

Controller

MANO

Physical Network (PNF’s)

Active and

Available

Inventory

EMS/NMS

Instrumentation

Monitoring

Domain

Controller

Assurance Analytics

Engine

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Service Assurance Throughout the Lifecycle

Pre-launch Testing(Simulation)

New Service Validation & Birth

CertificateService Monitoring Troubleshooting

Life Cycle

Automation Elasticity Multi-tenant Portability Resiliency

Security QoS/QoE VNF and PNF mix Service continuity Service chaining

QA Testing

Lab Network Testing

Active Functional and Load Testing

VNF Infrastructure Assurance

End-to-End Service Assurance

Live Network Testing, Monitoring & Optimization

Active, Passive & NFVITesting & Monitoring

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• Combining active/passive instrumentation with eventsdynamic and adaptive

• Closed loop automation with policy and active inventory

• Contextual analytics predictive with machine learning

Shared Resources

Policy &

optimization engine

Policy & rules

Load & capacity models Multi-domain

service

orchestration

platform

Controller(s)

MDC

Analytics enginePredictive cognitive

Streaming Probe Batch Events Process

Telemetry Route/Topology Active and Available Inventory

Orchestrated Service Assurance with Closed Loop

Automation

Discovery / Subscribe

Live Topology VFN Catalog

& Active Inventory

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Service Assurance Automation – Open FrameworkCentralized vCPE example

Open APIs

E2E Service orchestration

Open APIs

Service chain instrumented with probes (virtual/physical – active/passive)

Data

Service

model

KPIs

SLA violations

Test catalog

OSS/BSS

policy input

Control

Probe domain controller

Customer portal Operator portal

vCPEService provider CO/DC

VNFs

MPLS

Internet

WAN Controller(s)

EXFO Verifier

vPassive

vActive

Physical

(Active/Passive)

Service Design with

Instrumentation

VNFs

L2 Y.1564 Turn-up & validation initiated

Service up and running!

L3 TWAMP active monitoring initiated

BV-3100

Active & Available

Inventory (A&AI)

Incremental &

Iterative

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Key Takeaways

• NFV and SDN hold promise• Service agility, faster time to market, lower operational costs

• But also create challenges • Real-time management across physical and virtual realms

• Shared infrastructure, multiple abstractions

• Vendor-specific ecosystems open to vertical integration

• Orchestrated Service Assurance enables QoE as a competitive differentiator

• Dynamic & On-demand: network, service and user context-aware• Efficient: automated, scalable & consumption-based

• Future proof: open interfaces and vendor agnostic

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