Book Image

VMware NSX Network Essentials

By : sreejith c
Book Image

VMware NSX Network Essentials

By: sreejith c

Overview of this book

VMware NSX is at the forefront of the software-defined networking revolution. It makes it even easier for organizations to unlock the full benefits of a software-defined data center – scalability, flexibility – while adding in vital security and automation features to keep any sysadmin happy. Software alone won’t power your business – with NSX you can use it more effectively than ever before, optimizing your resources and reducing costs. Getting started should be easy – this guide makes sure it is. It takes you through the core components of NSX, demonstrating how to set it up, customize it within your current network architecture. You’ll learn the principles of effective design, as well as some things you may need to take into consideration when you’re creating your virtual networks. We’ll also show you how to construct and maintain virtual networks, and how to deal with any tricky situations and failures. By the end, you’ll be confident you can deliver, scale and secure an exemplary virtualized network with NSX.
Table of Contents (15 chapters)
VMware NSX Network Essentials
Credits
Foreword
About the Author
About the Reviewer
www.PacktPub.com
Preface

VXLAN troubleshooting


VXLAN is the overlay technology that is used in the VMware NSX environment when it comes to first-time testing and implementation, and most likely, we will end up with a few connectivity issues. Some of the common issues that we might face because of misconfiguration in both virtual and physical networks are as follows:

  • Virtual machines have no network connectivity, either between other machines in the same VXLAN network, or no egress connection with the physical world

  • Frequent packet drops getting reported and the applications team facing poor performance issues

  • Virtual Machines have proper network connectivity on some of the ESXi hosts, but when placed on another set of hosts, there is no connectivity

  • Normal ping tests are fine, but when checking with VXLAN packets, packet drops occur

  • Virtual machines in VLAN networks have proper network connectivity; however, VXLAN networks are not working

The majority of network-related issues related to VXLAN will be around the preceding...