Cisco has long used open source and Linux internally as a tool for supporting its own network. Network administrators at Cisco a long time ago developed a open-source tool, running on Linux servers, to manage the company’s extensive network of thousands of printers and print servers.

What OS is Cisco IOS based on?

Cisco IOS is a monolithic operating system running directly on the hardware while IOS XE is a combination of a Linux kernel and a monolithic application (IOSd) that runs on top of this kernel.

What language does Cisco use?

Get to know Cisco’s Tool Command Language (TCL) At some point in your career as an administrator, it’s a good bet that you’ve used a script to automate some common task.