Gartner Research

How to Prepare Your Network for Private and Hybrid Cloud Computing

Published: 17 March 2015

ID: G00274670

Analyst(s): Simon Richard


Data center network architecture must meet the demands imposed by private and hybrid cloud computing. This document provides a step-by-step methodology for enabling a traditional data center network to deliver dynamic provisioning by leveraging new technologies, such as SDN and VXLAN.

Table Of Contents

Problem Statement

The Gartner Approach

The Guidance Framework

  • Prework
    • Understand the Enterprise Cloud Strategy
    • Create a Cross-Silo Provisioning Function
    • Derive the Technical Requirements From the Business Requirements
    • Security and Zoning
    • Understand the Technology Landscape
  • Virtualization-Enabled Phase
    • Simple Virtual Switch Deployment
    • Flatten the Network to Make Every VM-Related Port Available Everywhere
    • Scale Up Centralized Distribution Services
    • Use Classical DNS and GSLB-Based L3 Extension Across Geographies
    • Network Provisioning Automation
  • Virtualization-Optimized Phase
    • Actively Managed Virtual Switch
    • Any Port, Anywhere
    • Scale-Out Distribution Layer
    • Prepare for L2 Stretching
    • Cross-Silo Automation
  • Private Cloud Phase
    • Evaluate Network Virtualization and SDN
    • Align Logical and Physical Layers
    • Deploy Logical to Physical Gateways
    • Implement L2 Stretching
    • CMP Integration
  • Hybrid Cloud Phase
    • Bridge CSP Access Layer
    • Instrument and Integrate CSP Edge
    • Extend WAN to Carrier-Neutral Exchange
    • Evaluate SD-WAN Offerings
    • CMP and CSP Integration
  • Follow-Up

Risks and Pitfalls

  • Inertia
  • Not Linking Back to the Cloud Strategy Requirements
  • Buy-In From the Operations Team
  • Security and Multitenancy
  • Lock-In

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