Extreme Networks BlackDiamond 8800 Series - EPS-600 LS External Power Module; Power Supply Overview; Single 600-LS Module Configuration: Redundant Poe Power

Summit External Power Supplies (EPS)
Extreme Networks Consolidated ExtremeXOS Hardware Installation Guide
328
EPS-600LS External Power Module
The EPS-600LS External Power Module (Model No. 10913) is the redundant power supply unit for use
with the Summit X450e-48p or Summit X250e-48p switch. The EPS-600LS power module is installed in
the EPS-C chassis (Model No. 10912). The EPS-C chassis can hold up to three EPS-600LS units.
NOTE
Each individual EPS-600LS power supply is shipped with an AC cord for use in North America, and each EPS-C
chassis is shipped with a special redundant power supply cord.
Power Supply Overview
The Summit X450e-48p or Summit X250e-48p switch may be powered by one, two, or three external
power modules using the redundant power input connector on the rear of the switch. The cable for
making this connection is shipped with the EPS-C chassis). The EPS-C chassis can hold one, two, or
three EPS-600LS units.
The PoE capability of the Summit X450e-48p or X250e-48p varies depending on the number of external
power modules in use. Table 44 summarizes the PoE power behavior for the Summit X450e-48p or
X250e-48p switch based on the number of power modules in use.
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 PSU. The internal Summit X450e-48p or X250e-48p PSU 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 PSU fails, the external power module will provide power to PoE devices at the same
power levels as the internal PSU without any power interruptions.s.
● If the EPS-600LS power module fails or is removed, the internal PSU continues to provide PoE
power without any power interruptions.
Table 44: External power modules and corresponding PoE behavior
Internal PSU
Status
EPS-600LS (1x) EPS-600LS (2x) EPS-600LS (3x)
External PSU/Chassis
Failed/Disconnected
Internal PSU:
Power On
370 W of
redundant power
740 W of
external power only
Internal PSU disabled
740 W of
external power only
with 2 + 1 redundancy
Internal PSU disabled
370 W of
internal power only
Internal PSU:
Power Failure
370 W of
external power only
740 W of
external power only
740 W of
external power only
with 2 + 1 redundancy
No PoE power