Extreme Networks 17001 manual EPS-600LS External Power Module, PoE Redundant Power Configurations

EPS-600LS External Power Module

The EPS-600LS External Power Module (Model 10913) is a 600-watt redundant power supply unit that can be used with the following Extreme Networks switches:

●Summit X450e-48p switch

●Summit X250e-48p switch

NOTE

An AC power input cord is not provided with the EPS-600LS power module. You can order an appropriate cord from Extreme Networks or from your local supplier. The power cord must meet the requirements listed in “Selecting Power Supply Cords” on page 218.

Each EPS-C chassis is shipped with a special redundant power supply cord for connection to the Summit switch. Make sure that the EPS-C chassis is installed in the equipment rack before installing an EPS-600LS power module.

PoE Redundant Power Configurations

You install one, two, or three EPS-600LS power modules in the EPS-C chassis (Model 10912) to build an external redundant power system for the Summit switch. A redundant power cable shipped with the EPS-C chassis provides the connection between the external power system and the redundant power input connector on the back of the switch.

The PoE capability of the Summit X450e-48p or X250e-48p varies depending on the number of external power modules in use. Table 17 summarizes the PoE power behavior for the Summit X450e-48p or X250e-48p switch based on the number of power modules in use.

Table 17: External Power Modules and Corresponding PoE Behavior

Internal PSU				External PSU/Chassis
Status	EPS-600LS (1x)	EPS-600LS (2x)	EPS-600LS (3x)	Failed/Disconnected
Internal PSU:	370 W of	740 W of	740 W of	370 W of
Power On	redundant power	external power only	external power only	internal power only
		Internal PSU disabled	with 2 + 1 redundancy
			Internal PSU disabled
Internal PSU:	370 W of	740 W of	740 W of	No PoE power
Power Failure	external power only	external power only	external power only
			with 2 + 1 redundancy

Single 600-LS Module Configuration: Redundant PoE Power

A single EPS-600LS power module provides redundant PoE power capability with the same 370-watt capacity as the internal power supply. The internal Summit X450e-48p or X250e-48p power supply is capable of 370 W of PoE power: 15.4 W supplied to each port for a 24-port configuration and 7.7 W supplied to each port for a 48-port configuration.

●If the internal power supply fails, the external power module will provide power to PoE devices at the same power levels as the internal power supply without any power interruptions.

●If the EPS-600LS power module fails or is removed, the internal power supply continues to provide PoE power without any power interruptions.

Summit Family Switches Hardware Installation Guide 77