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Cisco IOS Software

Cisco IOS Software

Making Devices Smarter

Cisco IOS Software delivers a seamless integration of technology innovation, business-critical services, and hardware support.

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Building Highly Available Networks

Cisco IOS Technologies

Cisco IOS technologies include innovative capabilities designed to amplify and extend network functions.

Cisco IOS Software Releases

New releases deliver cutting-edge technologies and industry-leading functionality.

Cisco IOS XR Software Releases

Cisco IOS XR Software is a unique self-healing and self-defending operating system.

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Learn About Cisco IOS Software

Get details about how to download, update, and upgrade Cisco IOS Software along with information about licensing and hardware considerations.

Best Practices
Innovations and Standards

Cisco invests billions annually in research and development and acquires companies with proven expertise in next-generation internetworking technologies.

Data Center:
Cisco NX-OS 

Data Center: Cisco NX-OS

Cisco NX-OS is the foundation for Cisco's next-generation data center switching.

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Cisco IOS Diagnostic Tools for Commercial

Cisco IOS Software Release 12.4(15)T

New Easy-to-Use Tools: 20 new scripts to help you manage small to medium-sized networks.

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Latest Cisco IOS Software Documentation

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