Cisco IOS XR

"IOX" redirects here. For the remote sensing satellite package, see Ionospheric Occultation Experiment.
Cisco IOS XR
DeveloperCisco Systems
OS familyUnix-like
Working stateCurrent
Source modelClosed source
Latest release24.3.1 / September 1, 2024; 56 days ago (2024-09-01)
PlatformsNCS 5x0, NCS 5x00, 8000, ASR 9000 and XRv 9000 Series Routers
UserlandLinux
Official websiteCisco IOS XR
Line card running IOS XR.

IOS XR is a release train of Cisco Systems' widely deployed Internetwork Operating System (IOS), used on their high-end Network Convergence System (NCS) and carrier-grade routers such as the ASR 9000 series and Carrier Routing System series of routers.