Summit X450a series is based on the revolutionary ExtremeXOS operating system from Extreme Networks. ExtremeXOS is a highly resilient, modular operating system that provides continuous uptime, manageability and operational efficiency. Each Summit X450a switch offers the same high-performance, non-blocking hardware technology used on Extreme Networks BlackDiamond 8800 series, in the Extreme Networks' tradition of simplifying network deployments through the use of common hardware and software throughout the network.