Explore Cisco
How to Buy

Have an account?

  •   Personalized content
  •   Your products and support

Need an account?

Create an account


Cisco IOS Software Release 15.5(1)S - Retirement Notification

The Cisco IOS Software Release 15.5(1)S has been retired and is no longer supported.

You can view a listing of available Networking Software (IOS & NX-OS) offerings that best meet your specific needs

If you want support information for the Cisco IOS Software Release 15.5(1)S documentation, it may be available through Cisco.com Search or in the Cisco Community