Poe Redundant Power Configurations; Single 600-Ls Module Configuration: Redundant Poe Power; Dual 600-Ls Module Configuration: Full Power; Triple 600-Ls Module Configuration: Full Redundant Power - Extreme Networks Summit X150 Series Hardware Installation Manual

Summit Power Supplies

PoE Redundant Power Configurations

The PoE capability of the Summit X450e-48p or X250e-48p varies depending on the number of external
power modules in use. Table 34
X250e-48p switch based on the number of power modules in use.
Table 34: External Power Modules and Corresponding PoE Behavior
Internal
Power
Supply
Status EPS-600LS (1x)
Internal Power 370 W of
Supply: redundant power
Power On
Internal Power 370 W of
Supply: external power
Power Failure only

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.

Dual 600-LS Module Configuration: Full Power

Two EPS-600LS power modules provide full power at 740 W; this power level allows 15.4 W of PoE
power to all 48 ports. In this full-power configuration, the internal power supply is disabled, and
therefore redundant power is not available.

Triple 600-LS Module Configuration: Full Redundant Power

Three EPS-600LS power modules provide the full 740 W of power for 15.4 W of PoE power to all 48
ports. In addition, this configuration provides 2:1 redundancy. If one of the EPS-600LS power modules
fails, the third power module continues to provide uninterrupted full PoE power. The internal power
supply is disabled in this configuration.
108
summarizes the PoE power behavior for the Summit X450e-48p or
EPS-600LS (2x)
740 W of
external power only
Internal power supply
disabled
740 W of
external power only
EPS-600LS (3x)
740 W of
external power only
with 2 + 1 redundancy
Internal power supply
disabled
740 W of
external power only
with 2 + 1 redundancy
Summit Family Switches Hardware Installation Guide
External Power
Supply/Chassis
Failed/Disconnected
370 W of
internal power only
No PoE power