SD-WAN Tutorial: Service Components, Functionality, MEF Reference Architecture and Use Cases

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1 Tutorial: Service Components, Functionality, MEF Reference Architecture and Use Cases Ralph Santitoro, Distinguished Fellow and Director, MEF Head of SDN/NFV Solutions Practice, Fujitsu

2 Contents Concept: Overlay vs. Underlay Network What is an? Service Components and Functionality Why an Service? Service using MEF Reference Architecture Service Use Cases

3 Underlay Network The physical transport network Concepts: Overlay and Underlay Networks Overlay Network Virtual Network abstracted from the transport network (underlay network) Overlay networks are tunneled over Underlay networks Using an encapsulation protocol, e.g., VxLAN, NVGRE, IPSec tunnel, etc. Overlay/Underlay terminology used in DC Networking Terminology usage more recent with WAN () Although, MEF has defined Carrier Ethernet as a virtual overlay service

4 What is an? Currently no industry standard definition but described as follows: Specific application of an SDN applied to WAN connections A Virtual (Overlay) Network that runs on top of public Internet and VPNs Operates over existing wireline or wireless networks Has no interaction with the (underlay) network over which it operates Internet VPN MEF is working to create a standardized Service Definition

5 Subscriber Web Portal OSS Apps Orchestrator Controller Service Components Overlay Network Service Components Internet Edge MPLS VPN CSP or MSP Network Edge Edge Performs Traffic steering, Application classification, QoS and Security policy enforcement Controller Centralized control of Edge devices Orchestrator Service orchestration and policy management for traffic routing and QoS over different Interfaces to customer web portal, OSS apps and Controller

6 Fundamental Service Functionality Traffic steering over secured tunnels between Edges Encryption over all : Internet (broadband), MPLS VPN, LTE, WiFi, etc. service can operate over different CSP / ISP Real-time QoS performance measurements over each WAN QoS PMs used to determine which WAN to steer packets based on QoS Policies Application-based traffic steering based on QoS or Security Policies Send Skype for Business traffic over Internet if packet loss < 1% and packet delay <70ms Block all sites from accessing cloud-based storage, e.g., box.com Zero Touch Provisioning Making a business service installed with the automation of a residential service

7 Why an Service? Subscriber Benefits Large OpEx Savings Steer traffic from expensive MPLS VPN to Internet when QoS policies met Application-based QoS Management QoS Policies/Metrics per Application used to steer traffic over different Quickly add temporary or remote Sites Over ubiquitous Internet using wired or wireless connections Achieve High Availability & Path Diversity Run s over different ISPs plus VPN Service Provider Benefits Lower OpEx via Automation Zero-touch provisioning of Edges Self-Service Customer Portals Faster Time to Service Revenue Quickly add off-net sites via Internet or LTE No need for inter-provider peering with off-net access network providers Enter Competitor or Incumbent Markets Deliver service to subscribers even if you don t provide network access to the site

8 Service using MEF Reference Architecture (RA) Self-service Web Portal Cantata Allegro Business Apps Legato Service Orchestration Functions (SOF) Presto Presto Interface Enables a Service Orchestrator to manage different vendor Controllers Controllers manage Edges in their domain Controller MEF OpenCS Project focusing on functionality (SOF) at the Presto Interface Adagio Site Edge CSP or MSP Edge Site

9 Service Use Cases

10 Site Self-service Web Portal Edge CPE Cantata Allegro Controller CSP or MSP Business Applications Legato Presto Adagio Service Orchestration Functions (SOF) NFV Resource Orchestrator Adagio Edge VNF Service with Virtual Edge Virtual Edge Edge VNF which terminates connection runs inside of server Cloud Service Provider

11 Self-service Web Portal Cantata Allegro Controller Business Applications Legato Presto Adagio Service Orchestration Functions (SOF) NFV Resource Orchestrator Adagio Service with Edge vcpe Edge vcpe Edge VNF which terminates connection runs on vcpe Ability to add more virtual network services as new VNFs on vcpe Site Edge CPE CSP or MSP Edge vcpe Site

12 Self-service Web Portal Cantata Allegro Controller {Vendor B} Adagio Business Applications Legato Presto Service Orchestration Functions (SOF) Service Using Multiple Vendor Controllers Controller {Vendor A} Adagio Presto Interface Each Controller supports Presto Interface Controllers manage Edges in their domain Using Presto, Service Orchestrator can setup across each domain Site Edge Edge Site Edge Edge

13 provides a virtual overlay service Does not interact with the underlay (transport) network Key Takeaways provides tremendous benefits to SPs and Subscribers Service Agility, Time to Service Velocity, OpEx, Application-level awareness MEF work on Services will help industry move forward Standard MEF Reference Architecture OpenCS Project Reference Implementation of Presto Interface Standardized Service Definition