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Achieving real time voice and video virtualized network functionality in nfv

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Dialogic Inc.
Dialogic Inc.

This presentation guides you through the critical points one needs to consider to achieve real-time voice and video virtualized network functionality in NFV.

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COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. Achieving Real-time Voice and Video Virtualized Network Functionality in NFV October 2015
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 2 Agenda Real-time applications vs. web-based apps Migration from COTS to NFV Sources of latency in the virtual environment Media processing applications in VoLTE/IMS KPIs for real-time management
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 3 Signalling Media Signalling Media Real-time and Web Applications Are Not the Same Web Request Delays of up to a second can be acceptable to maintain users train of thought - Nielson Servers can send progress responses to maintain user connection Loss experienced in 6% of all HTTP responses - Google User expectation Request Response Real-time Multimedia Applications Bounded - packet delay budget LTE: <200ms target PDB for conversational voice Approaching 1 second: Stream artifacts become noticeable Intolerable effect on call quality
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 4 Monetizing a Millisecond What’s the value of a millisecond? Enterprise cloud-based trading applications Better performance for high stakes mission critical enterprise applications First syllable clipping effects can have devastating impact on the transaction Clipping < 64msec Dropped packets < 0.2% of active voice packets “Ten million shares - now!” “Got it!” “..million shares - now!”
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 5 5G Enabled Services Low latency services Tactile internet Autonomous driving Multimedia video calls Gaming Virtual/augmented reality Source: GSMA Intelligence
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 6 The Migration From COTS to NFV COTS to VM Sharing the same hardware across multiple virtual machines Real-time media applications need a reliable clock source and in COTS the use the hardware real- time clock Multiple VM hypervisors have differences like schedulers that effect real-time applications Extensions for low latency applications Shared machine instances Resource/scheduling contention increases work load latency with the addition of each VM Performance unpredictable - noisy neighbours Number of hosted VMs dynamic – impacts VNF performance COTS Virtual Machine Cloud NFV
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 7 The Migration from COTS to NFV VM to Cloud Deployment challenges across third party cloud platforms Varying local rules and policies Customization restrictions limit latency and performance tuning Licensing entitlement and monetization for various business models Usage, subscription, pay-as-you-go COTS Virtual Machine Cloud NFV
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 8 The Migration from COTS to NFV Cloud to NFV Standards maturity and compliance key to interoperability Possibility of application specific management of service quality and reliability Different levels of orchestration and interoperability Network Services , VNF and Infrastructure Increased automation Proactive , Self-Healing capabilities COTS Virtual Machine Cloud NFV
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 9 Latency In The Virtual Environment Causes of Latency and Packet Delay Resource contention, multiple VMs sharing Network IO virtualization overheads CPU virtualization overheads Solutions for Low Latency Pass through (direct) access to resources – SR-IOV Bypass or tune virtualization Over provision Allocate 100% CPU and memory Remove power management Results in issues for NFV… Standards based access to virtualization features Trade offs to improve latency reduce flexibility/elasticity Added cost of over provision
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 10 • Relieve network congestion and improve service reliability • Allow horizontal scaling to reduce latency on individual nodes • Masks underlying virtualized infrastructure Scaling Web Applications Web Services Applications IP Traffic Modern IP Networks are CONGESTED Congestion Spots Database Load Balancers
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 11 Media Devices Media Servers Media Broker Applications MRB App Server App Server Media server control Media server control Media MRF MRF MRF GW SBC WebRTCPBX Media Resource Broker Media Resource Broker Standardized media control element Provides media server scaling and redundancy Handles media control signaling Optional bearer handling Typically stateful Management of underlying media server resources Aggregation, failure recovery, capacity distribution, etc. Scales out MRF capacity without the application being aware Allows applications to see virtualized environment as single entity No modification to application – does all the heavy lifting Standards based RFC 6917, 3GPP TS 23.218 MRB
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 12 Media Devices Media Servers Media Broker Applications MRB App Server App Server Media server control Media server control Media MRF MRF MRF GW SBC WebRTCPBX Media Resource Function Media Resource Function Processes and manipulates media streams in IMS and VoLTE networks Typical uses Media mixing/routing Tones, DTMF Conference, IVR Transcode/Transrate/Transsize WebRTC anchor Standards GSMA – IR.92, IR.94 MRB
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 13 Information Availability is Key KPI inputs to orchestration layers VNF Life Cycle Management Scaling up/down, in/out Automatic , real-time service scenarios Ensure continuous service quality on-demand. (i.e. usage burst) Frees up people making capacity planning decisions Real-time analytics for developing predictive self organizing and self healing policy rules SLA adherence Proactive service quality policies Frequency, scope (per session, aggregate) of KPIs Clash for control Contention avoidance between high availability features and virtual environment resiliency Ve-Vnfm EM VNF Transcoding VNF MRF VNF MRB NFVI OSS/BSS VNF Manager
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 14 Information Availability is Key EM VNF Transcoding VNF MRF VNF MRB OSS/BSS • Port stats: Total/Used/Free • IVR Port stats • Media bridging statistics • Video codec utilization per activity • CPU utilization • Call attempts • Dropped calls • Resource utilization • Media sessions • Conference activity • Network • RTP sessions • Signaling sessions Application level KPIs • Runtime information • Events • Configuration changes • Jitter • Latency (PDB) • Dropped packets • RTD • MOS/VMOS • Video blockiness • Frame slips Service level KPIs Ve-Vnfm • Downscale with care; apply heuristics for graceful draining of sessions while conserving continuity for endpoints • Report KPIs that facilitate OSS/BSS to construct analytics and policies rules for effective service management and SLA adherence NFVI
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 15 Media Processing Automation Virtualization Layer EM NFV Mgmt. & Orchestration (MANO)OSS/BSS Composite MRF VNF VNF Manager NFV Orchestration Virtualized Infrastructure Manager (VIM) Nova Ironic Keystone Glance Neutron Swift Cinder Heat CeilometerHorizon HOT MRB VNFc MRF VNFc MRF VNFc MRF VNFc MRF VNFc MRF VNFc MRF VNFc MRB VNFc Stack 1A Stack 1B Stack 2A Stack 2B Stack 3A Stack 3B Catalog Build stack • Connectivity • Scaling relationship • Metrics • licensing Elastic scale • Instance added •Destroy Stack •Release licenses KPIs forwarded to VNFM
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 16 NFV Guiding Principles Virtualized Network Function (VNF) automation, scalability and programmability are not “nice to haves” rather “must have” goals Software modularity Critical to optimize VNF application performance and scalability and realize the full potential of a virtualized environment Architectural flexibility Software architected to foster technology advancements at the Network Functions Virtualization Infrastructure (NFVI) Virtual machines to container technology NFV and SDN are inextricably linked Integrating functionality in the VNFs that can impact what’s occurring in the packet forwarding plane
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 17 Suggested Reading Dialogic Cloud Ready Solutions http://bit.ly/1K2jiYH NFV Applications – Key Considerations for Profitability http://bit.ly/1Mp2Y6i
COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 18 Dialogic and Network Fuel among others as well as related logos, are either registered trademarks or trademarks of Dialogic Inc. and all companies controlling, controlled by, or under common control with Dialogic Inc. (“Dialogic”). The names of actual companies and products mentioned herein are the trademarks of their respective owners. This document discusses one or more open source products, systems and/or releases. Dialogic is not responsible for your decision to use open source in connection with Dialogic products (including without limitation those referred to herein), nor is Dialogic responsible for any present or future effects such usage might have, including without limitation effects on your products, your business, or your intellectual property rights. 07/15 dialogic.com

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Achieving real time voice and video virtualized network functionality in nfv

  • 1. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. Achieving Real-time Voice and Video Virtualized Network Functionality in NFV October 2015
  • 2. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 2 Agenda Real-time applications vs. web-based apps Migration from COTS to NFV Sources of latency in the virtual environment Media processing applications in VoLTE/IMS KPIs for real-time management
  • 3. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 3 Signalling Media Signalling Media Real-time and Web Applications Are Not the Same Web Request Delays of up to a second can be acceptable to maintain users train of thought - Nielson Servers can send progress responses to maintain user connection Loss experienced in 6% of all HTTP responses - Google User expectation Request Response Real-time Multimedia Applications Bounded - packet delay budget LTE: <200ms target PDB for conversational voice Approaching 1 second: Stream artifacts become noticeable Intolerable effect on call quality
  • 4. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 4 Monetizing a Millisecond What’s the value of a millisecond? Enterprise cloud-based trading applications Better performance for high stakes mission critical enterprise applications First syllable clipping effects can have devastating impact on the transaction Clipping < 64msec Dropped packets < 0.2% of active voice packets “Ten million shares - now!” “Got it!” “..million shares - now!”
  • 5. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 5 5G Enabled Services Low latency services Tactile internet Autonomous driving Multimedia video calls Gaming Virtual/augmented reality Source: GSMA Intelligence
  • 6. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 6 The Migration From COTS to NFV COTS to VM Sharing the same hardware across multiple virtual machines Real-time media applications need a reliable clock source and in COTS the use the hardware real- time clock Multiple VM hypervisors have differences like schedulers that effect real-time applications Extensions for low latency applications Shared machine instances Resource/scheduling contention increases work load latency with the addition of each VM Performance unpredictable - noisy neighbours Number of hosted VMs dynamic – impacts VNF performance COTS Virtual Machine Cloud NFV
  • 7. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 7 The Migration from COTS to NFV VM to Cloud Deployment challenges across third party cloud platforms Varying local rules and policies Customization restrictions limit latency and performance tuning Licensing entitlement and monetization for various business models Usage, subscription, pay-as-you-go COTS Virtual Machine Cloud NFV
  • 8. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 8 The Migration from COTS to NFV Cloud to NFV Standards maturity and compliance key to interoperability Possibility of application specific management of service quality and reliability Different levels of orchestration and interoperability Network Services , VNF and Infrastructure Increased automation Proactive , Self-Healing capabilities COTS Virtual Machine Cloud NFV
  • 9. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 9 Latency In The Virtual Environment Causes of Latency and Packet Delay Resource contention, multiple VMs sharing Network IO virtualization overheads CPU virtualization overheads Solutions for Low Latency Pass through (direct) access to resources – SR-IOV Bypass or tune virtualization Over provision Allocate 100% CPU and memory Remove power management Results in issues for NFV… Standards based access to virtualization features Trade offs to improve latency reduce flexibility/elasticity Added cost of over provision
  • 10. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 10 • Relieve network congestion and improve service reliability • Allow horizontal scaling to reduce latency on individual nodes • Masks underlying virtualized infrastructure Scaling Web Applications Web Services Applications IP Traffic Modern IP Networks are CONGESTED Congestion Spots Database Load Balancers
  • 11. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 11 Media Devices Media Servers Media Broker Applications MRB App Server App Server Media server control Media server control Media MRF MRF MRF GW SBC WebRTCPBX Media Resource Broker Media Resource Broker Standardized media control element Provides media server scaling and redundancy Handles media control signaling Optional bearer handling Typically stateful Management of underlying media server resources Aggregation, failure recovery, capacity distribution, etc. Scales out MRF capacity without the application being aware Allows applications to see virtualized environment as single entity No modification to application – does all the heavy lifting Standards based RFC 6917, 3GPP TS 23.218 MRB
  • 12. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 12 Media Devices Media Servers Media Broker Applications MRB App Server App Server Media server control Media server control Media MRF MRF MRF GW SBC WebRTCPBX Media Resource Function Media Resource Function Processes and manipulates media streams in IMS and VoLTE networks Typical uses Media mixing/routing Tones, DTMF Conference, IVR Transcode/Transrate/Transsize WebRTC anchor Standards GSMA – IR.92, IR.94 MRB
  • 13. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 13 Information Availability is Key KPI inputs to orchestration layers VNF Life Cycle Management Scaling up/down, in/out Automatic , real-time service scenarios Ensure continuous service quality on-demand. (i.e. usage burst) Frees up people making capacity planning decisions Real-time analytics for developing predictive self organizing and self healing policy rules SLA adherence Proactive service quality policies Frequency, scope (per session, aggregate) of KPIs Clash for control Contention avoidance between high availability features and virtual environment resiliency Ve-Vnfm EM VNF Transcoding VNF MRF VNF MRB NFVI OSS/BSS VNF Manager
  • 14. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 14 Information Availability is Key EM VNF Transcoding VNF MRF VNF MRB OSS/BSS • Port stats: Total/Used/Free • IVR Port stats • Media bridging statistics • Video codec utilization per activity • CPU utilization • Call attempts • Dropped calls • Resource utilization • Media sessions • Conference activity • Network • RTP sessions • Signaling sessions Application level KPIs • Runtime information • Events • Configuration changes • Jitter • Latency (PDB) • Dropped packets • RTD • MOS/VMOS • Video blockiness • Frame slips Service level KPIs Ve-Vnfm • Downscale with care; apply heuristics for graceful draining of sessions while conserving continuity for endpoints • Report KPIs that facilitate OSS/BSS to construct analytics and policies rules for effective service management and SLA adherence NFVI
  • 15. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 15 Media Processing Automation Virtualization Layer EM NFV Mgmt. & Orchestration (MANO)OSS/BSS Composite MRF VNF VNF Manager NFV Orchestration Virtualized Infrastructure Manager (VIM) Nova Ironic Keystone Glance Neutron Swift Cinder Heat CeilometerHorizon HOT MRB VNFc MRF VNFc MRF VNFc MRF VNFc MRF VNFc MRF VNFc MRF VNFc MRB VNFc Stack 1A Stack 1B Stack 2A Stack 2B Stack 3A Stack 3B Catalog Build stack • Connectivity • Scaling relationship • Metrics • licensing Elastic scale • Instance added •Destroy Stack •Release licenses KPIs forwarded to VNFM
  • 16. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 16 NFV Guiding Principles Virtualized Network Function (VNF) automation, scalability and programmability are not “nice to haves” rather “must have” goals Software modularity Critical to optimize VNF application performance and scalability and realize the full potential of a virtualized environment Architectural flexibility Software architected to foster technology advancements at the Network Functions Virtualization Infrastructure (NFVI) Virtual machines to container technology NFV and SDN are inextricably linked Integrating functionality in the VNFs that can impact what’s occurring in the packet forwarding plane
  • 17. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 17 Suggested Reading Dialogic Cloud Ready Solutions http://bit.ly/1K2jiYH NFV Applications – Key Considerations for Profitability http://bit.ly/1Mp2Y6i
  • 18. COMPANY CONFIDENTIAL © COPYRIGHT 2013 DIALOGIC INC. ALL RIGHTS RESERVED. 18 Dialogic and Network Fuel among others as well as related logos, are either registered trademarks or trademarks of Dialogic Inc. and all companies controlling, controlled by, or under common control with Dialogic Inc. (“Dialogic”). The names of actual companies and products mentioned herein are the trademarks of their respective owners. This document discusses one or more open source products, systems and/or releases. Dialogic is not responsible for your decision to use open source in connection with Dialogic products (including without limitation those referred to herein), nor is Dialogic responsible for any present or future effects such usage might have, including without limitation effects on your products, your business, or your intellectual property rights. 07/15 dialogic.com