SD-WAN 2.0:Building a Better SD-WANSDN World CongressWorld Forum, The Hague, NetherlandsWednesday October 12, 2016

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Q: Why Is SD-WAN Hot?

A: MONEY!

SD-WAN can provide enterprise VPNs at a lower cost point than today’s provider MPLS VPNs

$

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MPLS VPN Versus Broadband Pricing

Source: “Why does MPLS cost so much more than internet connectivity?”

As we saw when covering why the NEW architecture will happen MPLS is typically priced at $300 - $600 per Mbps per month for the copper connectivity typically deployed at all but the very largest enterprise locations, while the monthly price of broadband connectivity is now $1.50 - $15 per Mbps per month.

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More on Pricing

Prices vary around the world, but DIA is always less expensive than VPN

Source: “Enterprise Networks Price – Benchmarks and Trends” – Greg Bryan, TeleGeography

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It’s Not Just Pricing!

Other issues with today’s MPLS VPNs:• Slow to install and provision• Slow adds/moves/changes• Lack of application-level visibility and control

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Why Not Use Broadband for VPNs?

Higher lossLower reliabilityLack of securityShared, best-effort bandwidthRequired management of routing for VPN

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What Is Software-Defined WAN (SD-WAN)?

SD-WAN is an integrated solution to enable the augmentation or replacement of MPLS VPNs with an overlay network using lower-cost broadband connections

SD-WAN solutions typically provide embedded routing and firewall capabilities, policy-based flow routing and in some cases, WAN optimization

SD-WAN today consists of two parts:• A central controller, often hosted in cloud• Access nodes deployed at access sites

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SD-WAN Controller

The central controller:• Provides the command and control aspects of SD-WAN• Can run on the user’s site or hosted in the cloud

The controller normally includes these capabilities:• Acting as a repository for configuration of the access nodes• Administering the network topology• Setting and distributing policies for QoS and access• Reporting usage and performance

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SD-WAN Per-Site Access NodesMay be implemented as an appliance or a VNF on a server and include many or most of the following functions:• Zero-touch commissioning• Routing and tunneling engine• Hybrid WAN• Firewall and security• QoS and access policy• WAN optimization• Network loss and latency measurements

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SD-WAN Benefits

• Lower cost for VPNs• Access flexibility and redundancy• All-in-one solution • Policy-based control• Works over a variety of media

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Current SD-WAN Limitations

• SD-WAN is standalone• SD-WAN is monolithic• SD-WAN couples service and technology• SD-WAN implementations are large• SD-WAN is a pure overlay technology• SD-WAN is user-managed

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SD-WAN 2.0: The Next StepEvolve SD-WAN by leveraging foundation of virtualization, NFV and SDN. Improvements over SD-WAN:• Scalable: Implemented as components using VNFs or containers• Network-focused: Supports underlay and overlay models• Flexible: QoS measurements decoupled from policy• Modular: Enables service providers to continue to select best-of-breed

components for routing, firewall, DPI, etc.• Extensible: Platform available for innovative services• Managed: Designed to enable operators to offer as a part of managed

services

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MPLSVPN

Internet

HeadquartersBranch 2

Branch 1

Branch 3

Gateway SD-WAN 2.0

Branch 4

SD-WAN 2.0

PEPE

L3VPNL3VPN

Broadband

SD-WAN 2.0

Orchestration and controlCustomer

portal

PE VNF

SD-WAN 2.0 ArchitectureMaps between IP-VPN and tunnelsGateway into cloud services (IP-VPN & IPSec tunnels)

NFVI – data centerVNF VNF VNF

VNF

Centralized network

functions

Distributed network

functions

Application-aware flow steering

• Virtualization and SD-WAN• Network and overlay protocols• Single service order integration• Pure-play software

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Characteristic SD-WAN SD-WAN 2.0

Topology Overlay Overlay or peered

SD-WAN Versus SD-WAN 2.0

Characteristic SD-WAN SD-WAN 2.0

Topology Overlay Overlay or peered

Ownership and management

End-user End user or operator with user portal

Characteristic SD-WAN SD-WAN 2.0

Topology Overlay Overlay or peered

Ownership and management

End-user End user or operator with user portal

Construction Monolithic Constructed from micro-services

Characteristic SD-WAN SD-WAN 2.0

Topology Overlay Overlay or peered

Ownership and management

End-user End user or operator with user portal

Construction Monolithic Constructed from micro-services

Deployment Tied to service Open platform for service innovation

Characteristic SD-WAN SD-WAN 2.0

Topology Overlay Overlay or peered

Ownership and management

End-user End user or operator with user portal

Construction Monolithic Constructed from micro-services

Deployment Tied to service Open platform for service innovation

Performance assurance

Monolithic Decoupled and available for SLAs

Characteristic SD-WAN SD-WAN 2.0Topology Overlay Overlay or peeredOwnership and management

End-user End user or operator with user portal

Construction Monolithic Constructed from micro-servicesDeployment Tied to service Open platform for service innovationPerformance assurance

Monolithic Decoupled and available for SLAs

Value driver Lowest cost Platform for dynamic and flexible managed services

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Summary

• SD-WAN is good, but it has limitations• SD-WAN 2.0 provides an evolution of SD-WAN that

addresses these gaps and fits into an NFV/SDN architecture• For more info, please see “

SD-WAN 2.0: Evolving to a Complete Solution”

Thank You

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