Deploying Virtualized Services Over Legacy Networks
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The document discusses deploying Network Functions Virtualization (NFV) over existing legacy networks, emphasizing the need to utilize cloud characteristics such as resource pooling and on-demand services. It outlines obstacles to achieving NFV's full potential and proposes building on current MPLS VPN infrastructure to seamlessly integrate Virtual Network Functions (VNFs). The proposed solution includes dynamic insertion of VNFs through customer requests, leveraging existing technologies to optimize costs and enhance scalability.
Deploying Virtualized Services Over Legacy Networks
- 1. Network Virtualization and SDN Europe June 1, 2016 Deploying Virtualized Services Over Legacy Networks
- 2. © 2016 ADVA Optical Networking. All rights reserved. Confidential.2 NFV: A Narrow Definition Replacing closed appliances with software virtual network functions (VNFs) that can be hosted anywhere in the network on any open hardware
- 3. © 2016 ADVA Optical Networking. All rights reserved. Confidential.3 Broad Definition of NFV Bring the cloud to the network. Use the cloud to deliver the cloud. Are we doing that with NFV today? How cloudy is NFV?
- 4. © 2016 ADVA Optical Networking. All rights reserved. Confidential.4 NIST Definition of Cloud Computing Five essential characteristics: • On-demand self-service • Broad network access • Resource pooling • Rapid elasticity • Measured service Are we doing that with NFV today? NO. Could we? YES!
- 5. © 2016 ADVA Optical Networking. All rights reserved. Confidential.5 The Goal: Cloudy NFV • Hosted centrally • Available on demand • Integrated with network • Integrated with OSS/BSS • Pay-as-you-grow model
- 6. © 2016 ADVA Optical Networking. All rights reserved. Confidential.6 Some Obstacles 1. Integrated with network: How to leverage existing infrastructure? 2. Integrated with OSS/BSS: How much work is required? 3. Hosted centrally: How to provide dynamic connections? 4. Available on demand: Access via customer portal?
- 7. © 2016 ADVA Optical Networking. All rights reserved. Confidential.7 Can we cross the gap to NFV? And do so while minimizing impact? There Must Be a Way!
- 8. © 2016 ADVA Optical Networking. All rights reserved. Confidential.8 Answer: Build on Today’s MPLS VPNs Service providers have deployed layer 3 VPNs everywhere, built on fast and reliable MPLS backbones Layer 3 VPN MPLS Backbone
- 9. © 2016 ADVA Optical Networking. All rights reserved. Confidential.9 … and add NFV in the Cloud Centralized NFV optimizes pooling of compute resources, maximizing resilience, minimizing cost Layer 3 VPN MPLS Backbone Data Center
- 10. © 2016 ADVA Optical Networking. All rights reserved. Confidential.10 But how do we connect the VNFs to the VPNs? Need a dynamic method to inject VNFs at the PE router Layer 3 VPN MPLS Backbone Data Center
- 11. © 2016 ADVA Optical Networking. All rights reserved. Confidential.11 Solution – Use BGP to Signal Specific VNFs can be tied to specific VPNs Layer 3 VPN MPLS Backbone Data Center
- 12. © 2016 ADVA Optical Networking. All rights reserved. Confidential.12 Details of VNF Insertion Sequence: 1. Customer makes request at portal 2. OSS generates service order for orchestrator 3. Orchestrator instantiates VNFs via OpenStack 4. Orchestrator signals eBGP engine 5. eBGP engine signals route insertion 6. VPN traffic redirected to VNF(s) – service is live! OSS/BSS eBGP only (no data) Customer Portal MPLS Backbone Layer 3 VPN Orchestrator 1 2 4 OpenStack
- 13. © 2016 ADVA Optical Networking. All rights reserved. Confidential.13 Benefits of Using Existing Infrastructure • Layer NFV on top of existing infrastructure and OSS systems • Offer customers dynamic incremental virtualized services • No change to existing CEs, PEs or L3 VPNs • Centralized NFV offers lowest TCO • Scalability is very high – easy to add more servers • Very distributed approach – can add a few servers in multiple locations • Starting cost at each point of instantiation is very low • Required integration to OSS/BSS is limited to service order
- 14. © 2016 ADVA Optical Networking. All rights reserved. Confidential.14 We Can Make NFV More Cloudy! … and we can get started today!
- 15. Thank You IMPORTANT NOTICE The content of this presentation is strictly confidential. ADVA Optical Networking is the exclusive owner or licensee of the content, material, and information in this presentation. Any reproduction, publication or reprint, in whole or in part, is strictly prohibited. The information in this presentation may not be accurate, complete or up to date, and is provided without warranties or representations of any kind, either express or implied. ADVA Optical Networking shall not be responsible for and disclaims any liability for any loss or damages, including without limitation, direct, indirect, incidental, consequential and special damages, alleged to have been caused by or in connection with using and/or relying on the information contained in this presentation. Copyright © for the entire content of this presentation: ADVA Optical Networking.