Demystifying Network Function Virtualization (NFV) Service Assurance
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The document discusses Network Function Virtualization (NFV) service assurance, highlighting key aspects such as NFV technology overview, use cases, and a telco NFV case study. It emphasizes challenges in NFV adoption, particularly the cultural barriers and the need for integration between IT and network operations. The document also outlines the benefits of NFV, including operational efficiencies, service elasticity, and dynamic management of virtualized network functions.
Demystifying Network Function Virtualization (NFV) Service Assurance
- 1. Demystifying Network Function Virtualization (NFV) Service Assurance
- 2. Session Agenda • NFV Technology Overview • NFV Assurance Use Cases Branch Office SDN NFVI • Telco NFV Case Study • Summary 2
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- 4. 2017 Predictions: NFV makes its move in 2017 http://www.rcrwireless.com/20170105/opinion/2017-predictions-nfv-makes-its-move-in-2017-tag10 “The single biggest barrier to NFV adoption will continue to be culture. Consolidation between the carrier network and IT operations teams means carriers must adopt cloud- native operation practices to run their core infrastructure efficiently. Stated differently, the legacy need for separate groups and frameworks to manage IT and network services becomes obsolete. It’s a major hurdle in those organizations that are leading the way in NFV adoption.” “2017 will see broad-scale adoption among service providers, and the emergence of an enterprise market for NFV solutions” 4
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- 6. Network Function Virtualization Infrastructure 6 Non-specialized Hardware Resources Compute Storage Network Virtualization Layer
- 7. Network Function Virtualization Infrastructure Non-specialized Hardware Resources 7 Compute Storage Network Virtualization Layer Virtualized Network Functions SD-WAN APN CacheURL Ads EM SD EM APN EM CacheEM URL
- 8. Network Function Virtualization Infrastructure Non-specialized Hardware Resources 8 Compute Storage Network Virtualization Layer Virtualized Network Functions SD-WAN APN CacheURL Ads EM SD EM APN EM CacheEM URL NFV MANO Orchestrator VNF Manager Virtual Infrastructure Manager
- 9. NFV Benefits Reduction of network elements to manage & deploy Operational efficiencies through virtualization Service Elasticity Reduced complexity for High Availability Automated network operations Deployment of best-of-breed OPEX decrease by reduction of branch visits Capex reduction by deployment of standard x86-based servers 9
- 10. NFV Assurance Use Cases
- 11. Zenoss NFV Experience First virtual network device support shipped in 2013 • Cisco Nexus 1000v, ASAv, CSR 1000v • Citrix Netscaler VPX Followed by ACI, UCS E-Series, Viptela ~15% of commercial customers now using virtual network devices • with Nexus 1000v, more like 50% Several telcos in early stage NFV deployments ? ? ? ? 11
- 13. vBranch / vCPE: Location Scenarios 1. vCPE & VNFs at premise • Service functionality is in the Branch, aligns w enterprise model today. Most popular and well accepted model.. 2. Cloud based vCPE & VNFs + basic HW CPE • Service function is in DC • SMB market target typically (reduced branch functions) • Few years ago target, now market moving to #1 3. vCPE & VNFs at premise + VNF in Cloud • VNFs and Value added services placed where performance, cost, and policy compliance are optimal. • Dynamic relocation of functions, based on factors such as changing network loads, to provide optimal quality of experience • Futuristic today, #1 is market reality today 13
- 14. Impact of Network Functions Virtualization in the branch •Discrete physical Appliances installed and cabled together •Add/Modify - physical presence of technical staff •Space/power requirements •Physical inventory management and low utilization •Rich and flexible services with a variety of VNFs and even application VMs •Multiple functions delivered on one hardware •Deploy/modify services remotely w virtualization •Pay for what you use, easy to deploy new VNFs •Automated deployment & management Before vBranch solution SP WAN Physical CPE and physical appliances cabled together Branches HQ SP vBranch Introduction SP WAN Same network functions but virtualized + possible Apps CSR1kv ASAv vWAAS3rd party Self-service Portal vBranch VMS Management platform 14
- 15. Branch Office Networking with UCS-E Series UCS E-Series server • A server in an ISR blade • Perfect place to run firewalls, VDI, etc. Zenoss Integration • Monitored like any UCS Server • vSphere impact relationships • 1000s being monitored today 15
- 16. Partnership: Viptela SD-WAN Viptela SD-WAN Solution • Secure data connectivity over any transport • Centrally managed routing, policy, security, segmentation, and authentication Zenoss Integration • Fault and performance monitoring for branch office network • Single connection to vManage provides monitoring for control and data plane across every device • Proven scale to 6,000+ Viptela devices 16
- 17. Datacenter ACI and Virtual Networking
- 18. Zenoss for ACI Monitors ACI-defined applications and automatically tracks the health and performance of the supporting infrastructure • Compute and Virtualization • Storage • Network and Network Services • OS workloads and middleware Proactively evaluates application health and provides cross-technology stack root cause identification Continuously tracks the health and performance of each ACI tenant application and its supporting infrastructure 18
- 19. Fabric Infrastructure Visibility Efficient Day 2 operations of ACI applications Tenant and Application health Spine, leaf, and APIC policy relationships Network Function Devices monitoring, including links into supporting infrastructure 19
- 21. Zenoss for Cisco NFVI • Unified view of performance, fault, and availability for physical and virtual elements of Cisco NFVI • Proactive capacity thresholds • Automatically configured by the Cisco VIM so monitoring stays in sync with deployment with no manual effort 21
- 22. Cisco VIM ZenPack Automates discovery of all NFVI elements •OpenStack •Cisco UCS •Nexus Switches No need to add devices or configure authentication Delivers aggregated performance metrics and provides capacity thresholds 22
- 23. Identifies NFV Tenant Dependencies Here, infrastructure that this tenant relies on Shows recent KPI metrics for infrastructure elements Faster MTTR with Health issue identification 23
- 24. Zenoss NFV / VNF modeling Live Model Features • Automatically builds model of shared infrastructure supporting each network service • Event-driven updates for as-running accuracy • Identifies network services affected by infrastructure issues • Drives root cause analysis to quickly focus problem resolution on individual tenant issues Supports VNF devices running in virtual machines OpenStack support for Nova , Neutron, and Ceph 24
- 25. Telco NFV
- 26. the Telco NFV Hype Cycle past the peak of inflated expectations, exiting the trough of disillusionment and entering the slope of enlightenment Expectations 201 2 201 3 201 4 201 5 201 6 201 7 201 8 201 9 Innovatio n Trigger Peak of Inflated Expectations Plateau of Productivity Trough of Disillusionment Gartner Hype Cycle ETSI initial white paper ETSI NFV R1 convergence of vision for virtualization ETSI NFV R2 end to end interworking ETSI NFV R3 operational optimization 3GPP 5G Wireless accelerated deployment explosion of activityearly success stories of virtualization integrating and implementing lab demo’s harder than expected widespread deployment in 4G networks core part of 5G architectures cloud native 26
- 27. Service Assurance in the ETSI VNF Model ETSI NFV Model Service Assurance vNMS Fault Management Performance Management Log Management 27
- 28. 28 Service Assurance - virtual Network Management System (vNMS) “Service Assurance (SA) collects alarm and monitoring data. Applications within SA or interfacing with SA can then use this data for fault correlation, root cause analysis, service impact analysis, SLA management, security monitoring and analytics, etc.” • Automatic discovery • Connection with orchestration • Collect alarm status, events, performance metrics and logs from VNF’s • Transform/enrich the collected data • Identify the underlying cause of faults • Identify which services are affected • Report on SLA’s and KPI’s • Automatically detect performance anomalies • Integrate with OSS/BSS for network wide problem tracking and analytics Service Assurance vNMS Fault Management Performance Management Log Management OSS/BSS VNF’s
- 29. Case Study: implementing Zenoss as a Telco vNMS vNMS Fault Management Performance Management Log Management OSS/BSS VIM Compute StorageNetwork Openstack/KVM NFVI VNF 1 EM 1 VNF 2 EM 2 VNF 3 VNF 4 VNF’s vProbe Orchestrator Linux VEM 3 VNF 5 COMP 1 COMP 2 COMP 3 local dashboards collected data enriched events Service inventory scripts Telco Network 29
- 30. 30 Case Study: implementing Zenoss as a Telco vNMS Differences between VNF architecture’s • Monolithic (ported from appliance) • Disaggregated into functional modules Different ways to communicate • Direct to module, through a management agent or using an EMS • snmp, REST api, sftp, CORBA Orchestration systems maturing NFVI and VNF being managed by different teams (IT and Network) Deciding if the vNMS should be a just another VNF or deliberately separated Challenges Zenoss Advantages Integration with OSS/BSS shielding from complexity of different VNF architectures Quick to build ZenPacks to support a range of protocols from VNF’s for fault, performance and logs Able to import/export inventory information and work with the Orchestrator to register VNF’s as they are activated Manage the VNF and VNFi in one system mapping the dynamic relationships as resources scale up and down Robust and scalable deployment options
- 31. Summary
- 32. NFV Assurance Challenges and Requirements Summary Challenges Requirements NFV reliability dependent on the performance and availability of the underlying infra layers: Compute, Storage, Hypervisor, Op system, networking NFVs’ are not aware of NFVI dependencies and dynamic environment Consolidated NFV Infrastructure and VNF operations Traditional network infrastructure static (dedicated HW/SW) NFV operations requires a dynamic mapping of VNFs to the NFV infrastructure NFV management tool following infrastructure changes dynamically Quick and easy Multi-vendor adaptation (simple to add any vendor VNFs or NFV infrastructure) Open SDK to add multi-vendor devices, technologies, VNF SW. Broad range of protocol support: SNMP, syslog, XML, Netconf, and vendor specific APIs Integration with legacy operations infrastructure, ticketing systems for quicker adaptation to new technologies Open NB APIs, bi-directional integration capability Dynamic Orchestration system bi-directional integration (exchanging inventory, services, remediation actions) Exchanging inventory, service model, triggering remediation actions with orchestration 32
- 33. Zenoss perfect fit for NFV Assurance Match made in heaven Requirements Zenoss Functionality / Features Consolidated NFV Infrastructure and VNF operations Single platform covering servers, Openstack, Docker containers, Linux, VNFs NFV management tool following infrastructure changes dynamically Dynamic mapping of VMs to infrastructure, VNFs on VMs, interfacing to all NFV levels Open SDK to add multi-vendor devices, technologies, VNF SW. Broad range of protocol support: SNMP, syslog, XML, Netconf, and vendor specific APIs ZenPacks to cover any VNFs, technologies, interfaces. ZPs can be developed by anyone. Open NB APIs, bi-directional integration capability JSON API based integration to orchestration, service desk, inventory systems Exchanging inventory, service model, triggering remediation actions with orchestration Existing orchestration integrations e.g. Cisco NSO / Tail-F 33
- 34. Questions ? 34