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The Book of GNS3 by Jason C. Neumann

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Chapter 9. Cisco IOS On UNIX and NX-OSv

In this chapter, I’ll discuss strategies for installing and integrating Cisco IOU devices with GNS3. You’ll also learn how to install and run Cisco’s next-generation switch operating system (NX-OS) using VirtualBox and NX-OSv.

Cisco IOU

Cisco IOU is one of the cooler things to happen to the Cisco education community in a long time. IOU functions similarly to Dynamips but uses far fewer resources. Like Dynamips, IOU allows you to add routers and switches to your GNS3 projects. Unlike Dynamips, IOU images emulate the features of an IOS technology train rather than the hardware component of a particular Cisco model. Each IOU image file is a self-contained binary application that runs an instance of a device. ...

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