EVOLUTION OF SERVICE QUALITY MANAGEMENT THROUGH CLOSED LOOP AUTOMATION Yvon ROUAULT Wireless Advisor / CTO Office
Feb 12, 2017
EVOLUTION OF SERVICE QUALITY MANAGEMENTTHROUGH CLOSED LOOP AUTOMATION
Yvon ROUAULTWireless Advisor / CTO Office
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Virtualized Network—The Vision
If You Can’t Assure It in an Agile Way,
You Can’t Virtualize It
So how can services that are created in a
dynamic environment be assured upon delivery?
By proper integration of service assurance tools
with network/service orchestration
These Days, Testing Is Based on Silos
EMS
OSS/BSS
Verifiers
Analytics
(Domain-Specific)
Video
DPI
Active Test
Systems
EXFO|Worx
NOCNetwork / Service Quality
Group4
Service Activation
and Billing
Passive
Monitoring
Wireless
Group1Group2Group3
Service
Assurance
Domain
(*) fault, configuration, accounting,
performance, securityTAP
Analytics
(Cross-Domain)
(e.g, VoLTE)
Probe
NENE
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Network Management
System (FCAPS*)
• Operational silos (dev-ops not possible)
• Each SA system is geared to a specific domain or service; no E2E
• Too many probes; high cost of overlay monitoring network
• Troubleshooting is complicated (swiveling chair)
• Adding assurance for a new service is very time consuming
• Overlap between EMS/NMS functions and SA functions
Issues with Current Organization
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Addressing Challenges Through the Lifecycle
VNF Infrastructure Assurance
End-to-End Service Assurance
Pre-Launch Testing
(Simulation)
New Service Validation
Service ProvisioningBirth Certificate
Troubleshooting
ELASTICITY
MULTI-TENANT
PORTABILITY
RESILIENCY
SECURITY
QoS/QoE
VNF AND PNF MIX
SERVICE CONTINUITY
SERVICE CHAINING
Self-HealingResource Upgrade
Scaling
Life Cycle
QA Testing
CI/CDDevOps
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© 2016 EXFO Inc. All rights reserved. | 6
How can we do things
differently in NFV?
With automated testing!
Assurance Automation—Targets
TEST AND
PERFORMANCE
• Deploy “active” and “passive” test
functions in key locations
• Test performance “before and
after” service chain is “turned-up”
by emulating user session
• Predictive analytics to ensure QoE
by monitoring end-to-end
performance of infrastructure and
service
INTEGRATED INTO
SERVICE ORCHESTRATION
• Enable rapid turn-up by
embedding test instrumentation in
host devices
• Validate that service performance
meets SLAs as part of end-to-end
service orchestration
• Enable end-to-end service
assurance and optimization
through immediate access to
relevant data
OPEN AND
FUTURE-PROOF
• Open interfaces for ease of
integration
• Vendor agnostic end-to-end test
capabilities
• Proven integration with MANO
vendors
OSS/BSS
8
Reference Architecture—Service and Assurance Modeling
Service
Model KPIs
Test Result Analytics
Service Template
EXFO
Test Automation Center
Assurance enriched template
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Real-Time End-to-End
Service Experience Analytics
Service
Service Orchestration
(Virtualized) Network FunctionManagement and Orchestration
Test VNFsTest VNFs
Test VNFs
Test VNFsTest VNFs
VNF List Test VNFs
Test VNFsVNF List
Test VNFsTest VNFsSLA
Thresholds
Test VNFsTest VNFsEnd Points
(KPI’s and Actions)
Service
Test VNFsTest VNFsEnd Points
(KPI’s and Actions)
Test VNFsTest VNFs
Turn-up Actions
Test VNFsTest VNFsSLA
Thresholds
Test VNFsTest VNFsSLA/KPI
Monitors
Reference Architecture—Service and Monitoring Instances
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VNF Configuration
Test Configuration
VNF Data Third-PartyProbe Domain Controllers
Monitoring Domain ControllerNetwork Domain Controller
Physical Network
Closed Loop SQM
Network-Based API’s
TrafficSimulator
Passive vProbe
Instantiate Probes
Service Chain
Instantiate Service Chain
VNF1 VNF2 VNF3
Service Orchestration
(Virtualized) Network FunctionManagement and Orchestration
OSS/BSS Enterprise
Self-Care PortalOperator Portal
Real-Time End-to-End
Service Experience Analytics
Passive vProbe
Dynamic Service Models Yang/Tosca
Test Automation Controller
The elimination of EMS’s/NMS’s role in assurance
The service assurance scope will expand to cover (FC…PS):
fault, configuration, performance, security
• The “accounting” function will be conducted by the service/network orchestrator
Decoupling probes from the service assurance application
• All monitors (active, passive, embedded, VNF, NFVI) are services instantiated on demand by any service assurance
application
Service assurance applications will cover:
• Infrastructure assurance (vIMS, vDNS, vEPC, etc.)
• End-to-end service specific assurance (end-to-end orchestrated service)
• Assist orchestrator in (self healing, scaling, policies, etc.)
• Feed to service analytics
Architecture Trend
(1) fault, configuration, performance, security
11
Case Study—vCPE
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BUSINESS ETHERNET
SERVICE (vCPE)
Innovative automation of turn-up
certification and problem isolation to
enable service providers to go beyond
the demarcation point at zero truck rolls
Customer portal access to visualize
and test network health and rich
communications services for further
cost reductions
Benefits of Virtual Active Probes
IN THE CONTEXT OF
VIRTUALIZED NETWORKS
Expectations
• Not to disrupt the on-demand experience when virtual networks are
created dynamically
– Birth certificates for new services will need to be issued in a timely manner
– Certify the end-to-end quality of the service (at any time)
Operators gain several benefits from using virtual active probes
• Accurate, fine-grained view of service availability and performance
• Certification speed
• Low-cost certification
• Improved customer satisfaction
• Customer self-service
Agi le NFV/SDN Assurance
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
• Ability to collect data from multiple sources
• Ability to take a holistic, proactive view of the network
ASSURANCE MUST BE INTEGRATED
INTO SERVICE ORCHESTRATION
• To enable rapid turn-up by embedding test instrumentation in host devices
• To validate that service performance meets SLAs as part of end-to-end service orchestration
• To enable end-to-end service assurance and optimization through immediate access to relevant data