Industrial Introduction to NFV. Peter Willis BT Research & Innovation

Transcription

1 Industrial Introduction to NFV Peter Willis BT Research & Innovation

2 Industrial Introduction to NFV Contents What is Network Functions Virtualisation (NFV)? Customer & Operational Benefits Industry Adoption Open Innovation BT s Activities Use Cases: Virtual Customer Premises Equipment (vcpe) Cloud Connect Value Added Services Industry Perspectives BT s NFV Development Status Operational Challenges 2

3 What is Network Functions Virtualisation? Competitive & Innovative Ecosystem Classical Network Appliance Approach Independent Software Vendors Message Router CDN Session Border Controller WAN Acceleration Orchestrated, automatic & remote install. DPI Firewall Carrier Grade NAT Tester/QoE monitor Standard High Volume Servers Standard High Volume Storage SGSN/GGSN PE Router BRAS Fragmented non-commodity hardware. Physical install per appliance per site. Hardware development large barrier to entry for new vendors constraining innovation & competition. Radio Network Controller Standard High Volume Switches Network functions Virtualisation Approach Adding Machine Typewriter Printing Press

4 Operational Benefits Uniformity of operations Reduced training Simplified In Service Software Upgrades Simplified High Availability Simplified planning & provisioning Simplified disaster recovery Common sparing Preferred test & diagnostic tools embedded Automation of installation Reduced site visits From To V 1.0 V 1.1

5 Summary of Customer Benefits Simplification of network gear installed on premises Reduced space and energy consumption Less truck rolls and site visits (reduces opex) Ability to automate introduction of new services with minimal disruption to existing services Customer does not need to be present on site for provision of new network function Reduced provision timemonths to minutes Higher availability- reduced box count reduces hardware components that can fail (less power supplies, fans, cables etc) Service agility means not just faster, but new models: Tailored services for customers Try-before-you-buy Customers can respond rapidly to business drivers: Bring up new sites quicker to connect to corporate network Fast and seamless adaption to on site changes Asset recovery- flexible re-use of software assets 7

6 The NFV Revolution 27 network service providers surveyed (representing 53% of global telecom capex) will deploy NFV at some point with 81% expecting to do so by IHS Technology NFV Strategies Aug

7 Vendor Adoption Infonetics forecast NFV revenue to grow from $928M in 2014 to $8.1B in CY18, with a CAGR of 76%. 7

8 Network Operators Adoption Extent of initiatives Live deployments PoCs / Trials Launching PoC for full ISO 7-layer stack fulfilment, activation and orchestration of VNFs in carrier networks Currently virtualizing its IMS platform and launching vsbc Going to launch VoLTE services EasyGo Network (VPN) trial in 2015, already live at some clients, larger deployments in 2016 Investigation on NextGen PoP RFP on orchestration Evolving Cloud VPN service by deploying orchestrator to provision and service chain physical and virtual network functions. Pragmatic approach Launched VoLTE services with vims in Kuwait in 2015 Anticipation project launched by Orange Labs On Demand Network program PoCs focused on orchestration, performance, vims Successfully conducted residential vcpe PoC in early 2015 NFV evolution roadmap activated in 2015 Deployment of a Vmware Cloud platform for NFV & VoLTE Live vggsn at small customers M2M with Affirmed Networks NetroSphere concept & MVNO launched on NFVi in Spain program Multi vendor VNF with Amdocs Launching Live vepc in early 2016 NFV strategic plan defined, including techno trials and training program NovoNet 2020 NG network plan (including NFV/SDN) vims small scale pilot in 2015 Field trial of VRAN in 2015 Preparing NFV-based VoLTE Long-term approach Launched NFV-based IoT platform with vepc Launched vcpe in /3 of total CPE installed base under vcpe solution (enterprise customers) Domain 2.0 NFV/SDN program 21 NFs virtualized in 2015, 86 in % of WAN virtualized by 2020 Developed CORD concept Network-on-Demand live Plan to have 50% of open source software ECOMP framework up and running VNF roadmap for the next three years Platform-driven approach: UNICA project vcpe live trial in Brazil TeraStream all IP network model SDN-based VPN trial in 2015, Europewide live deployment by 2018 Experimented running VNFs in Linux containers Network virtualization plan around NFV and SDN defined in early 2015 OpenStack platform deployed in 5 DC in 2016 Extent of strategic vision Source: Capgemini analysis Copyright 2016 Capgemini Consulting. All rights reserved.

9 The NFV Open Innovation Story ETSI NFV Industry Specification Group now has 300 members, ~30 tier 1 carriers. The Jul 2014 plenary had 303 participants. 41 multi-vendor NFV Proof of Concepts. Informal discussions on cooperation began in April 2012 At an operator meeting in June 2012 we coined the new term Network Functions Virtualisation (NFV). We decided to convene a new industry forum, and publish a joint white paper to galvanise the industry In September 2012 we decided to parent the new forum under ETSI called the NFV ISG In October 2012 we published the first joint-operator NFV white paper as a call to action. This paper is widely regarded as the seminal paper heralding this new approach for networks. The first NFV ISG plenary session was held in January 2013 Research initiated & led by BT Authored & Edited By BT Convened By BT In Oct 2013 the 1 st NFV ISG documents were released after only 10 months, and a second joint-carrier NFV white paper published to provide our perspectives on progress. Plans to publish 96 specifications of which ~50 are finalised.

10 BT Use Case 1: Virtual Enterprise CPE Or Universal CPE Current Model (Appliance per Service) Ops Management BT Global Network - Hardware ordering, pre-staging, ship - Site visit, physical rack & stack Customer branch office deployment of network appliances Non NFV: 3 * truck rolls Planned Work start 2am 4am Planned Work end NFV Model (Single Box hosts n*services) Ops Management vmware (hypervisor) BT Global Network - Once server deployed, no further site visits, physical racking/stacking, etc Customer branch office deployment of virtual appliances NFV: 1 * truck roll - Service outage during commission ~secs/mins - End-to-end service provision time ~minutes/days 6

11 The Paradox of a standard high volume server Cost of a NFV solution Value of NFV is in the openness of the eco-system. Standard high volume i.e. portable, software is more important than the form factor of the server: Different form factors may be more appropriate for different locations. Virtual Network Functions (Virtual Appliances) should start from leveraging the existing IT software eco-system e.g: x86/arm, Linux/Windows, KVM/Vmware.

12 SmartNID or Rouser v Rack Mount Server for Virtual Enterprise CPE at the Customer Premise SmartNID or Rouser 1 Box solution. Server right sized to WAN interface. Embedded & secure management channel to Lights Out Manager. Dying gasp. Network Timing (SyncE) Rack Mount Server 2 or 3 box solution. May be overkill for low bandwidth sites. Extra cabling for lights out manager Commodity hardware. No SyncE.

13 BT Use Case 2: Cloud Connect Value Added Services Traditionally, private networks used to connect customer sites together and to host their applications. Connectivity to non critical services hosted on public Internet via a few, heavily fortified gateways. We kept the rest of the world out. Today, our customers and many of their key applications are accessed via the public Internet. The boundaries are blurring and we must extend the security, reliability and trust of our private networks out into public networks. We need a new hybrid approach. BT IP Connect Global Cloud Service Nodes: securely integrating hybrid, private, cloud & Internet- Cloud of Clouds. NFV Virtual Firewall Virtual Accelerator Virtual Analytics Now using NFV to offer range of Value Add Service (VAS) capabilities, but hosted within BT s cloud (Cloud Connect Security & Acceleration) Customer or Service VPN GPop Internet BT IP Connect Global Provider Edge 8

14 NFV Projects in BT Overview Virtual Enterprise CPE in the Cloud research project. Virtual Enterprise CPE on NFV Infrastructure on the customer premise for BT GS in development. Live field trials completed. BT already using NFV for: Cloud Connect Value Added Services, vsbc for BT OnePhone, internal firewalls & load balancers. Research Underway Containers & Unikernels for NFV, advanced Orchestration using Machine Learning and DevOps. BT Dynamic Network Services development programme underway. BT DIY Orchestrator in development. R&I NFV Proof of Concepts completed: vbng, vepc, vipsec, ve-cpe on ucpe, NFV Orchestration, vcdn, vvideo QoE, lab tester, Openstack, Low latency KVM, Intel Cache Allocation Tech, ve-cpe in the cloud, Rousers.

15 LOVE & HATE NFV Operational Challenges Low Overhead Virtualisation Environment and High Availability Trusted Environments Maintaining service chains Securing NFVI & VNFs Software Licencing Virtual Infrastructure Management Scaling Lowing Virtualisation Overhead High Availability without 1+1 Training Guaranteeing Performance & Time to Repair SLAs Zero-touch secure boot-up

16 Low Overhead Virtualization Environments & High Availability Trusted Environments for NFV 1 to 3 1. Service Function Chaining a) Identifying which service chain flows belong to in multi-tenant VNFs. b) Non-service interrupting service chain modification. c) Service-chain OAM i.e. detecting & locating service chain faults. 2. Security a) Attestation of hardware, BIOS, NFVI and VNFs. b) Securing NFVI & VNFs when located in highly distributed physically insecure locations. c) Securing the production, shipping & installation of NFVI. d) Protecting NFVI managed over the Internet. 3. Software Licencing a) Standardising the methods & APIs for licencing NFVI software and VNFs. b) Separating s/w licence implementation from commercial licencing models. c) Ensuring software licencing model does not create a common mode failure mechanism. d) Zero-touch licencing of VNFs. e) Licencing VNFs on NFVI that is air-gapped from all other networks. vmware (hypervisor)

17 Low Overhead Virtualization Environments & High Availability Trusted Environments for NFV 4 to 7 4. Virtual Infrastructure Management Scalability Today s VIMs (OpenStack, CloudStack, Vcenter) are not suited for a highly distributed high scale (millions(smes/smbs) to billions (IoT)) of nodes solution. 5. Low Virtualisation Overhead Classical VMs use too much memory, waste CPU cycles and take too long to boot making some NFV use cases not cost effective. A Low Overhead Virtualisation Environment (LOVE) is required e.g. Containers & Unikernels. 6. High Availability. Networks must have >5 9s availability (some use cases >6 9s). This could be achieved by classical network protection mechanisms (e.g. 1+1, load balancing) but LOVE offers mechanisms to boot new VNFs in milliseconds lending itself to new very high availability mechanisms with low redundancy. 7. Training Most network operators have issues finding people with the right virtualisation (NFV & SDN) skills to design & operate NFV solutions. Open sourced high quality training courses focused on network operators requirements are required %

18 Low Overhead Virtualization Environments & High Availability Trusted Environments for NFV 8 to 9 8. Guaranteeing Performance & Time to Repair SLAs How do network operators integrate multi-vendor solutions together and guarantee performance? When these multi-vendor solutions break due to bugs how is finger pointing avoided and vendors encouraged to work together to fix the problem in a timely fashion. How can this integration & testing be done in a cost effective manner shared across the Industry? 9. Zero-touch secure boot-up. a) Today s PXE methods are designed to work on secure LANs. This needs to be improved to work across WANs and at insecure sites. Pre-staging is not cost effective. Installation needs to be deskilled and automated. The solution needs to be open. b) If the router is virtualised how can the device (NFVI) connect to the network (when BGP, PPPoE, DHCP, etc. needs to be instantiated first)? c) How can the NFVI be managed with only a single /32 or /30 IP address? d) How can the virtual router and/or the NFVI software be upgraded without risking loss of network connectivity? (i.e. fail

19 Challenges for the Industry with Containers for NFV Containers for NFV could give Carriers and Vendors radical efficiency gains for compute, development & operational resources plus improved flexibility and responsiveness compared to VMs but several challenges have to be addressed: 1. Container management systems (CMS) need to natively support multiple network interfaces per container. 2. VNFs need to be decomposed into micro-services to make best use of resources. 3. Carriers need to develop NetDevOps models to make best use of micro-services. 4. Security - making it difficult to escape and difficult to damage once escaped 5. The business benefits of Containers for NFV needs to be quantified to drive this innovation. These are small cows not far away.

20 NFV Summary Network Operators will adopt NFV & SDN to meet customers demands for more dynamic and efficient services that allow them to be more flexible. Network technology & operations will have to change to make best use of NFV & SDN. NFV deployment is in the early days, just starting to go into service, and significant challenges need to be addressed to maximise scale and automation. There are many research opportunities.

21 More Information Find out more:

22 22

23 BT Orchestration Architecture BSS MyAccount Portal Quote & Order Billing Ticketing OSS Application Access Layer Catalogue Editor Application Access Federated UI Reusable Plug-ins Catalogue TOSCA Orchestrator Network & Service Activation Service Design & Orchestration PNFs Min. Diff. Engine VNFs Workflow SDN Controllers VIMs Assurance Remediation RCA Inventory Analytics NFV BT s Cloud Collaboration services NFV Firewall NFV-enabled Cloud Service Node NFV-enabled Cloud Service Node NFV NFV Optimsation NFV-enabled Cloud Service Node NFV Firewall NFV-enabled Cloud Service Node Performancebased routing

24 BT s Cloud of Clouds Vision BT Connect portfolio delivers secure, high performance connectivity to cloud services. 14

25 Our Cloud of Cloud vision is enabled by NFV and SDN. BT has led the research and industry. Initial research into NFV initiated and led by BT. June 2012 term NFV agreed at operator meeting. First white paper on NFV written and published by BT. Jan 2013 First ETSI NFV ISG meeting convened by BT. Our Next Gen Cloud Contact services use virtualised centralised components. NFV is used vsbc for BT OnePhone,- internal firewalls & load balancers. Cloud Compute uses SDN and NFV to offer the virtualised service to customers NFV enabled Checkpoint Firewalls in our 13 Internet Gateways to SAAS providers Our BT Cloud Connect service uses NFV for Riverbed acceleration and Checkpoint firewalls BT Private Compute orchestrate allows customers to take advantage of the same services available through Cloud Compute using SDN and NFV Many POC customer trials and now live deployments Global launch of Connect Intelligence IWAN solution CMS uses SDN and NFV to offer the virtualised service to customers BT are collaborating with vendors to test how NFV / SDN technologies can be used in different use cases ADVA, Huawei, HP, Cisco

26 BT Cloud Connect Programme Cloud Value Added. Acceleration Firewalls & Web filtering Connectivity. Service. Cloud Connect platform. Rapid implementation. Common orchestration of multiple services. Global reach and strong existing presence in key cloud locations. Leveraging economies of scales of the BT IP Connect Platform. Cloud Connect data centre. On net-fibre to over 200 data centres worldwide. Direct Connect with virtual connects to data centres globally. Cloud Connect Direct. Direct Connection to major Software as a Service Providers. Direct on net BT Cloud Compute, BT Contact and BT One cloud services. Direct Connecting with virtual connections. Cloud Connect platform IP Connect Global Value added services Internet Gateway. IP Connect (MPLS) to Internet Connect Gateways. Global coverage at major Internet peering points. Breakout from customer VPN and enables custom routing for traffic. optimisation path to Cloud service providers. Gateway Cloud Connect Security. Virtualised security built into Cloud Connect Points of Presence. Check Point Software integrated within Points of Presence. Security option for IPsec VPN. Cloud Connect Acceleration. Virtualised acceleration built into the Cloud Connect Points of Presence. Riverbed Technology Inc s Steelhead technology. Improved end user experience and bandwidth reduction. BT Internet Connect Global 15