Post on 08-Jan-2017
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THE BRAINS OF THE NEW GLOBAL NETWORK
VIRTUALIZINGREAL-TIME COMMUNICATIONS
Ray Tseng, VP APAC Sales Apr 2016
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NFV OVERVIEW
Acknowledgement: Andy Reid, BT
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WHY ADOPT AN NFV STRATEGY
Lower capex Commodity compute / switching hardware No more end-of-life events for network appliances
Lower opex Software-based deployment of network functions Automated operations such as repair and scaling Vastly simplified spares / hardware replacement process
Reduced time to market for new services No hardware approval process Rapid prototyping
Acceleration of innovation Easy access to broader eco-system of innovative software vendors
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OPERATOR ADOPTION
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“AT&T plan to have virtualized 80% of their core network by 2020” – Andre Fuetsch VP Architecture & Design
Ambitious, far-reaching high budget operators
Pragmatic, started but cautious
Wait and seePace of implementation
VARIETIES OF NETWORK FUNCTIONS
Control Plane Functions
IMS Core
IMS App Server
Media Gateway Controller
Diameter Routing Agent
Policy Charging & Rules Function
SBC (Signaling)
User Plane Functions
Content Delivery Network
Deep Packet Inspection
WAN Accelerator
Firewall
Evolved Packet Core
SBC (Media)
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IT CLOUD PERFORMANCE SUITABILITY FOR NFV
Control plane functions work just fine We have demonstrated very large scale IMS core working well in a
public cloud environment
User plane functions are more demanding Hypervisor / vSwitch per-packet overhead presents challenges Standard IT cloud is (just about) practical and economical for functions
like SBC media processing Data plane acceleration solutions can make a huge difference
Testing of Perimeta SBC with 6WIND on KVM achieved 90% of bare metal performance on media session capacity
Control plane functions and compute-intensive user plane functions are best early candidates for NFV
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ORCHESTRATION IN NFV
Orchestration is concerned with managing the life cycle of virtualised network functions Service deployment Health monitoring Dynamic elastic scaling Software upgrade
Orchestration can deliver some valuable benefits Faster service provisioning Opex reduction
The value delivered by orchestration depends heavily on the nature of the virtualised network function (VNF) VNFs that have steady load can be usefully deployed with manual
scaling – greatly simplifies deployment
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VMWare vs. OpenStack
Most widely deployed cloud software
Majority of telcos already using VMware for IT
Stable and offers lots of management features
Perceived as expensive
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Open source cloud solution attracting all the buzz
Unlike VMware it is not a product, it is an ecosystem Many packages, each distributor
has a different flavor Software maturity issues Challenging to manage, e.g. no
hitless software upgrade
BT OnePhone service lets customers handle all calls - mobile or office -
through mobile phone
BT needed to deploy new SBCs to enable launch of OnePhone service; encumbent SBC vendor required a 3-months lead time to deliver
Metaswitch Perimeta vSBC Within 2-days: deployed Perimeta software
in BT’s existing VMWare-based data center +3-days: BT operations team takes over +½-day: BT team deploys Geo-Redundant +10-days: Completed 130 acceptance tests,
ready for service launch
CASE STUDY: VIRTUAL SBC
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Manx Telecom UK fixed-line & wireless provider (>50k lines)
Deployment details: Replacing legacy IMS core which provided residential PSTN services Deploying Metaswitch’s Clearwater Core, Perimeta, SAS, AGCF Retains some elements of existing solution that weren’t EOL
Alcatel-Lucent HSS Alcatel-Lucent ISAMs for copper pair termination
Deployment flexibility to re-use existing components Reduced cost of migration
CASE STUDY: NFV IMS FOR PSTN
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Launched September 2015 NFV: Real technology, Real benefits
NFV is real Production deployments already in carrier
networks Control plane applications
Best Virtual Network Functions to initially target VMWare is the pragmatic choice for near-
term NFV deployments OpenStack NFV will get there long-term
Many of the key benefits of virtualization can be realized without Orchestration
KEY TAKEAWAYS
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