Lightweight Office Infrastructure: Transitioning from Backbone to SD-WAN

Almaz Rakhimbekov, Giovanni Pepe
7 min readadvanced
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Overview

Uber is transitioning its enterprise network from a centralized backbone model to a scalable, flexible SD-WAN architecture to enhance performance, reduce costs, and streamline operations across its 250 global offices. This shift aims to cut latency, improve automation, and simplify network management.

What You'll Learn

1

How to implement a decentralized SD-WAN architecture for office connectivity

2

Why transitioning from a centralized backbone to SD-WAN can reduce latency and costs

3

When to use dual Direct Internet Access (DIA) links for office networks

Prerequisites & Requirements

  • Understanding of SD-WAN and network architecture concepts
  • Experience with network management and deployment(optional)

Key Questions Answered

What are the benefits of transitioning to an SD-WAN architecture?
Transitioning to an SD-WAN architecture allows for reduced latency, improved scalability, and lower operational costs. By bypassing centralized Points of Presence (PoPs), traffic can be routed directly to the internet, enhancing performance and simplifying network management.
How does Uber's SD-WAN architecture improve office connectivity?
Uber's SD-WAN architecture improves office connectivity by enabling direct internet access through dual DIA links, which reduces reliance on centralized infrastructure and allows for faster, more efficient traffic routing. This results in lower costs and improved user experience.
What challenges did Uber face during the SD-WAN implementation?
Uber faced challenges such as replacing legacy hardware without downtime, managing mixed connectivity models during the transition, and promptly procuring DIA circuits for globally distributed sites. These challenges required careful planning and coordination.

Key Statistics & Figures

Latency to common DNS endpoints
Dropped from 80-90 milliseconds to 8-10 milliseconds
This improvement has made online tools and video calls much more responsive in certain regions.

Technologies & Tools

Networking
Sd-wan
Used to transition from a centralized backbone model to a decentralized architecture for improved performance.
Deployment
Zero-touch Provisioning (ztp)
Facilitates automatic onboarding of hardware with minimal manual effort.

Key Actionable Insights

1
Consider adopting a decentralized SD-WAN model to enhance network performance and reduce costs.
This approach allows for direct internet access, which can significantly lower latency and improve user experience, especially for remote offices.
2
Utilize zero-touch provisioning (ZTP) to streamline hardware deployment and minimize manual errors.
ZTP can save engineering time and accelerate the onboarding process, making it easier to scale your network infrastructure.
3
Implement strong API support for automation in your SD-WAN deployment.
This enables better integration with existing systems and enhances monitoring capabilities, leading to improved operational efficiency.

Common Pitfalls

1
Failing to properly size hardware for throughput and performance can lead to network bottlenecks.
This often happens when organizations underestimate their traffic needs, leading to slowdowns and user dissatisfaction.
2
Not planning for mixed connectivity models during the transition can disrupt service.
Organizations must ensure robust failover mechanisms are in place to maintain connectivity during the switch to SD-WAN.

Related Concepts

Sd-wan Architecture
Direct Internet Access (dia)
Zero-touch Provisioning (ztp)
Network Automation