Using Power Supplies

On Summit family switches, ExtremeXOS reports when the PSU has power or has failed.

The Summit family switches support an internal power supply with a range of 90V to 240V AC power as well as an external redundant power supply. The Extreme Networks External Power System (EPS) allows you to add a redundant power supply to the Summit family switches to protect against a power supply failure. The EPS consists of a tray or module that holds the EPS power supplies.



When an EPS-T tray with two EPS-160 PSUs is connected to a Summit family switch, the internal power supply will show as failed.

On non-PoE Summit switches, if you experience an internal PSU failure and do not have an external PSU installed, the switch powers down. If you experience a PSU failure and have an external PSU installed, the switch uses the external PSU to maintain power to the switch.

On PoE Summit switches, there are specific power budget requirements and configurations associated with PoE that are not described in this section. The PoE Summit switches respond to internal and external PSU failures based on your PoE configurations. For more information about configuring PoE on the Summit PoE switches, see PoE.

For more information about Summit family switches and EPS, see the hardware documentation listed in Related Publications.