Dedicated VNF Management - Why it's performance critical for PCRF
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Sue Koch shares her presentation from NFV World Congress, as she explains why it is performance-critical to have dedicated VNF management for PCRF. #NFVWorldCongress
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Dedicated VNF Management - Why it's performance critical for PCRF
- 1. Dedicated VNF Management Why it’s performance- critical for PCRF
- 2. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs2 VNFM implementation options under MANO ● VNFM generic as part of NFV-O – any VNF ● VNFM embedded – purpose-built for vendor-specific VNFs ● Hybrid – embedded with well defined reference points to NFVO Deploying vPCRF NFV architecture VNFM {embedded} PCRFDRA NFVO VNFM {generic} VIM {cloud mgmt system} NFVI {KVM/VMWare/...} OSS FirewallRouter
- 3. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs3 VIM Router VNF_Manager OperatorNFV_Orchestrator Load new CPE package Validate package Instantiate VNF on new VM Configure router VNF Notify, VNF available Create new VMs Instantiating a vCPE – Router VNF Edge device—no HA or clustering requirements Goes down? Impact on limited # of customers Lose one, spin up a new one Simple VNF—single configuration file A Tale of Two VNFs – vCPE vs. vPCRF vCPE http://msc-generator.sourgeforge.net v4.2.1
- 4. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs4 High availability and stringent performance requirements Performance lag can impact millions of customers Runs hot—manages real-time processing High throughput, high transaction VNF A Tale of Two VNFs – vCPE vs. vPCRF vPCRF Instantiating a vPCRF VNF Create new VMs Validate configuration Notify, VNF available and running Load new vPCRF package Validate package Add new node and bring into service Instantiate vPCRF VNF on new VM Configure vPCRF clustering OperatorNFV_OrchestratorVNF_ManagerVIM DRA PCRF Configure vPCRF VNF Test connection http://msc-generator.sourgeforge.net v4.2.1
- 5. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs5 SPR IMS HSS MME SGW PCEF/ PGW OCS SDB PCRF ePDG AAA VAS/ Internet AF P-CSCF S2a Cx/Dx Sh Gxc Gy Gx Sy Sp Rx/ SOAP SPR When we think of PCRF… Runs hot in the core network Serves millions of subscribers and dozens of data plans Manages 100K+ transactions per second LTE Network
- 6. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs6 Embedded VNF Management Performance-critical operation Masks complexity of vPCRF to orchestration – reliable performance and safe scaling Well-defined SLA demarcation Single point of configuration and management with real-time system health monitoring Automated workflows – NFVO Metrics can trigger notifications to NFVO for scaling or fault management, via RESTful APIs Life cycle management Tightly controlled instantiation, scale-out/in, performance measures, termination
- 7. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs7 Performance-critical Service – VoLTE Metrics Load balancing Cluster scaling
- 8. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs8 PCRF – QoS, Performance and Availability Anatomy of a VoLTE service Average call duration: 3 minutes Rx P-GW PCRF MMTel server Gx SIP call control signalling P-CSCF S-CSCF LTE access network Internet OCS Sy Multiple IMS interactions QoS negotiation, bearer setup/teardown QoS: default and multiple dedicated bearers 10X signaling overhead Processing impact on control plane, high bitrate Performance: compressed call models, call flow interactions Service quality impact Instant setup: < 50 ms “always on” access Availability: session geo- redundancy, fallback
- 9. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs9 VoLTE in NFV Increasing capacity with distributed clusters Distributed In-memory Database Distributed In-memory Database PCRF_1 PCRF_2 PCRF_3 PCRF_4 PCRF_5 PCRF_n PCRF_1 PCRF_2 PCRF_3 PCRF_4 PCRF_5 PCRF_n ENSURE SESSION CONTINUITY Site A Site C Site B Site D Distributed In-memory Database PCRF_1 PCRF_2 PCRF_3 PCRF_4 PCRF_5 PCRF_n Distributed In-memory Database PCRF_1 PCRF_2 PCRF_3 PCRF_4 PCRF_5 PCRF_n Load BalancerLoad Balancer Load Balancer Load Balancer
- 10. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs10 VoLTE Cluster Scaling Load-balancing and scale out VNF Image Repository DRA Gx PCEF VNF Manager SPR Medium VNF 1b Medium VNF 1a Small PCRF Image Medium PCRF Image Large PCRF Image
- 11. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs11 VoLTE Cluster Scaling Load-balancing and scale out VNF Image Repository DRA Gx PCEF VNF Manager SPR Instantiates PCRF image Medium VNF 1b Medium VNF 1a Small PCRF Image Medium PCRF Image Large PCRF Image
- 12. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs12 VoLTE Cluster Scaling Load-balancing and scale out VNF Image Repository DRA Gx PCEF VNF Manager SPR Medium VNF 1b Medium VNF 1a Requests VNF Manager to configure VNF VoLTE PCRF 2a VoLTE PCRF 2b Small PCRF Image Medium PCRF Image Large PCRF Image
- 13. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs13 VoLTE Cluster Scaling Load-balancing and scale out VNF Image Repository DRA Apply VoLTE Service Config Add new cluster Gx Gx Diameter Connection PCEF VNF Manager SPR Medium VNF 1b Medium VNF 1a VoLTE PCRF 2a VoLTE PCRF 2b Small PCRF Image Medium PCRF Image Large PCRF Image
- 14. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs14 VoLTE Cluster Scaling Load-balancing and scale out VNF Image Repository DRA Gx Gx Diameter Connection Test Gx Connection via DRA PCEF VNF Manager SPR Medium VNF 1b Medium VNF 1a VoLTE PCRF 2a VoLTE PCRF 2b Small PCRF Image Medium PCRF Image Large PCRF Image
- 15. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs15 VoLTE Cluster Scaling Load-balancing and scale out VNF Image Repository DRA Gx Gx Diameter Connection Confirms to orchestrator that sequence is complete and service is live. PCEF VNF Manager SPR Medium VNF 1b Medium VNF 1a VoLTE PCRF 2a VoLTE PCRF 2b Small PCRF Image Medium PCRF Image Large PCRF Image
- 16. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs16 Not all VNFs are created equal ensures reliable performance and SLAs Specialization tied to function in-depth knowledge – configure and manage Simplifies cluster scaling load balancing + visibility across nodes, sites Interface to NVFO – Best of Breed system-wide benefits of orchestration Why Embedded VNF Management?
- 17. Information Security Level 1 – Confidential © 2015 – Proprietary and Confidential Information of Amdocs17 Thank You!