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The Anatomy of an SD-WAN Solution & Its Open Source
Building Blocks
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The Evolution of Open Source
Gen 1 2 3
Developed by an unaffiliated
community. No real business model
Developed by a company. Hybrid of free & commercial
license.
Developed by a company. Built for the cloud, offered as SaaS
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The Evolution of Open Source
Gen 1 2 3
Developed by an unaffiliated
community. No real business model
Developed by a company. Hybrid of free & commercial
license.
Developed by a company. Built for the cloud, offered as SaaS
Based on “How open-source software took over the world”
a TechCrunch article by Mike Volpi
• Index Ventures partner
• Previously Chief Strategy Officer of Cisco
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The Anatomy of an SD-WAN Solution
Orchestrator
SD-WAN Edge SD-WAN Edge
Controller Controller
Central Management
Edge Device
An SD-WAN Solution
SD-WAN of other vendors
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Open Source Building Blocks of an SD-WAN Solution
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Adding Open Source to the Mix – Edge Device
OS & Virtualization
Packet Processing & Routing
Technologies & Applications
nDPI FW WAN Optimization
Tunnels Creation & Management
Encryption IPSec
Controller REST APIs to Central Management
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Adding Open Source to the Mix – Management & Orchestration
Management Logic
Network Architecture
Policy Monitoring Provisioning Version
Management
Orchestration APIs
Management Infrastructure
Orchestration
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The Anatomy of an SD-WAN Solution
Orchestrator
SD-WAN Edge SD-WAN Edge
Controller Controller
Central Management
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The Anatomy of an SD-WAN Solution
Orchestrator
SD-WAN Edge SD-WAN Edge
Controller Controller
Central Management
Good open source coverage for the infrastructure level
Limited open source coverage
No open source coverage, only building blocks like DB & element management
Good open source coverage
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Horizontal SD-WAN Layers Across Edge & Management
Networking Infrastructure
Networking Applications: DPI, Security, WAN Optimization, Network
Monitoring
Edge
Man
agem
ent
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Horizontal Separation of SD-WAN Allows for
Modularity
This is the Second Wave of SD-WAN
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Modular Open Architecture
Controller / Agent
Router
Application infra
App1 App2 App3 App4 App5 AppN
Edge
Routing infra
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Applying Modular & Open Source Concepts to SD-WAN - Benefits • 50-90% Cheaper –
• Modular software stack – use what you need versus the entire bloated software stack that in many cases requires 4 cores and 8G minimum
• Success based licensing – Freemium based model with the base opensource for free and a nominal fee for additional features that add value
• Community – Open source community for development and support
• Removing vendor lock-in – Open architecture & open source
• Future proof – Integration of future technologies (e.g. AI, handling encrypted traffic, move towards zero trust networking)
• Differentiation - Service providers can offer differentiated services and have better control over their SD-WAN service
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Conclusions
• SD-WAN solutions are based on a large number of open source elements
• Gaps exist in the SD-WAN applications & management layers
• It is complex to bring all the open source elements into a complete solution
• Adding application modularity allows for: Controlling cost, differentiation, Future proof and limiting vendor lock
• flexiWAN is pioneering the concept of open source & modular SD-WAN
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Thank You Contact information:
Amir Zmora
https://flexiwan.com