ISPM NFV Migration Challenges V4 · PDF filefor both legacy and NVF / SDN based platforms such as OpenDayLight, OpenStack Neutron, ... provisioning integration and ......

Interoperability, co-existence and specific services as the drivers and opportunities for NFV & SDN migration

NFV & SDN Migration Challenges

NFV Vision and Challenges

•  Most major carriers have a vision for NFV and SDN transformation

•  “The road to NFV and SDN is going to be long, tough and expensive…..

•  “…..Key to all of this is going to be the availability of interoperable, interchangeable virtual network functions (VNFs)” •  Light Reading, May 2015

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It’s (Going to be) a Long Journey

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Source: AD Little / Bell Labs “Reshaping the Future with NFV and SDN” May 2015

And it’s Complicated

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Source: AD Little / Bell Labs “Reshaping the Future with NFV and SDN” May 2015

Today’s Reality

•  NFV & SDN migration will take time •  Expect virtualised IMS by 2020

•  Operators expect vendors to be NFV-ready today •  Migration path in place

•  NFV & SDN / legacy architecture must co-exist •  Not independent networks •  Heterogeneous networks with NFV and legacy elements, side-by-side

•  Knowledge gap internally for operational transformation and adoption of new architecture and paradigm

•  Fundamental reshaping of operator cost and skills base •  How do you make service perform as expected, end-to-end?

•  They will span all parts of the network

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Early Adoption Candidates

•  New services and functional upgrades •  IMS / VoLTE

•  But services such as VoLTE must span legacy and NGN networks •  Can deploy VoLTE in NFV but can’t simply turn off 3G or other networks

•  Old network infrastructure must co-exist with the new, virtualised network environments

•  VoLTE promises much and MNOs have to deliver to obtain expected performance benefits and meet customer expectations

•  Operational cost reduction •  Enhanced network efficiency •  HD quality

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VoLTE Case: SRVCC

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UE E-UTRAN

MME

MSC ServerTarget UTRAN/GERAN

Serving/PDNGW

IMS

UE Um/Uu Iu-cs/A

S3

Sv

S11S1-MME

S1-UE-UTRAN Uu SGi

HSSS6a

SGSN

Iu-ps/Gb

Bearer path before HO

Bearer path after HO

SIP signaling path before HO

Source: 3GPP TS 23.216 (R12)

NFV/SDN Orchestration and Assurance

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•  Service Assurance is critical

•  Must be integrated with a complete Service Catalogue and Provisioning systems for both legacy and NVF / SDN based platforms such as OpenDayLight, OpenStack Neutron, Floodlight etc

•  Data collection from both physical and virtualised network equipment, directly through SNMP and/or standard APIs

•  Interoperability goal and challenge •  Problem Handling is more complex with multiple stakeholders providing the end-to-

end solution to the end customer •  Directly affects the quality of service experience.

NFV/SDN Orchestration and Assurance

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That´s where NetVision comes in •  NetVision is a complete range of OSS service assurance solution delivering superior

customer experience and SLA compliance.

•  Seamless integration With legacy tools, providing a cost-effective upgrade to deliver full visibility and control of network performance and operations for both legacy & virtualized environments. •  Databases, RESTful APIs, file import / export

•  Interoperable

•  NetVision Aggregation Gateways are responsible for the integration of NetVision with SBI systems (EMS, NMS, SDN Controllers, routers, SWs, etc) enabling a complete multi-technology and multi-vendor environment for network and service management

•  NDI (NetVision Data Integration) functions for integration with external OSS/BSS systems

SDN/NFV Orchestration and Service

Assurance

•  Over-the- top, end-to-end orchestration of network services and virtualised network functions based on business/operational rules.

•  Spanning legacy and NFV infrastructure

•  Event, performance, capacity, SLA monitoring & management across the entire ecosystem.

•  Over-the-top and consolidated service views integrating NFV/SDN world with other services.

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NFV/SDN Orchestration and Assurance

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NetVision enables management of NFV/SDN and legacy infrastructure

Monitor, assure and orchestrate the whole virtual & physical infrastructures allowing : •  E2E intelligent event management, performance and capacity along with integrated real

time service level and smart service desk management; •  Problem handling & incident management across the board; •  Service catalog & provisioning integration and orchestration; •  Holistic service views and dashboards integrating NFV/SDN along with legacy networks; •  Integration of isolated NFV/SDN controllers at same or different domains; •  Traffic engineering. Interface with OSS/BSS - NetVision Aggregation Gateways & NDI •  NBI/SBI Rest/SOAP and SQL APIs; •  File import & export; •  SNMP native.

Service Assurance and Orchestration

NetVision – Unified Portal

§  End-to-end service management

§  SLA management §  Service inventory

§  Digital services catalogue §  Data acquisition

§  Event correlation §  Data consolidation and intelligence

§  Availability – Open Data / APIs §  Information presentation

§  Service Desk for operations

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Service A Service B Service C

Conclusion

•  NFV / SDN migration is inevitable •  Unless you build a network from scratch, you will have to manage

both legacy and NFV framework for some time to come •  Must ensure service delivery and performance across all domains •  Early adoption candidates – too expensive for wholesale migration

•  VoLTE is a clear example of persistence of legacy with NFV / SDN •  Must assure, orchestrate and deliver service end-to-end

•  NetVision optimised to support migration, deployment and cost-reduction

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Thank you

Questions?