Summit X250e series switches are based on the ExtremeXOS core-class operating system from Extreme Networks. ExtremeXOS is a highly resilient, modular operating system that helps provide continuous uptime, manageability and operational efficiency at an affordable price.Summit X250e-24x supports carrier Ethernet edge deployment with its flexible fiber connectivity options. Summit X250e-24x can support 100BASE-FX, 100BASE-LX10 and 100BASE-BX on its SFP ports depending upon deployment requirements.