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  1. Networking Software (IOS and NX-OS) - Cisco

    Cisco Networking Software (Cisco IOS, Cisco IOS XE, Cisco IOS XR, and Cisco NX-OS) is the world's most widely deployed networking software. It integrates cutting-edge technology, …

  2. Cisco IOS - Wikipedia

    In 2005 Cisco introduced the Cisco IOS XR network operating system on the 12000 series of network routers, extending the microkernel architecture from the CRS-1 routers to Cisco's …

  3. What is Cisco IOS software, and how does it work? - TechTarget

    Nov 21, 2023 · Cisco IOS (Internetwork Operating System) is a collection of proprietary operating systems (OSes) that run on Cisco Systems hardware, including routers, switches and other …

  4. Cisco IOS Explained with Features and Functions

    Dec 1, 2025 · Initially, Cisco developed IOS for its routers. Later, it redesigned it to work on other devices such as switches and firewalls. Currently, it works on all supported Cisco devices. IOS …

  5. Cisco IOS overview - Study-CCNA

    This article describes the Cisco IOS fundamentals, such as how to access IOS and what IOS modes are available.

  6. What is Cisco IOS - Overview and Description of Cisco's …

    IOS enables routing, switching, internetworking, and a variety of telecommunications functions on a whole series of Cisco network device platforms.

  7. How to Download Cisco IOS For Free - Comparitech

    Nov 19, 2024 · Learn how to legally obtain, download, and install Cisco IOS software on a Cisco device without hassles. Cisco IOS, or Internetwork Operating System, is a proprietary …

  8. Cisco IOS vs IOS-XE vs IOS-XR vs NX-OS: Comprehensive …

    Sep 8, 2024 · Understanding the differences between Cisco IOS, IOS-XE, IOS-XR, and NX-OS is crucial for network engineers and IT professionals to choose the right solution for their network …

  9. CISCO - IOS (Internetwork Operating System)

    Cisco's Internetwork Operating System (IOS) is system software which enables Cisco devices like routers and switches to manage networking functions like secure data transmission, …

  10. Cisco IOS XE - Wikipedia

    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.