Summit X450E-48P Power Supplies; Internal Psu; External Psus - Extreme Networks BlackDiamond 8800 Series Hardware Installation Manual

Summit X450e-48p Power Supplies

Internal PSU. The internal Summit X450e-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 or
any combination of ports where total PoE power does not exceed 370 watts. If the total system demands
exceed this power limit, the user may specify:
Port priorities to identify which ports should be ranked higher when allocating power
●
Port disconnect precedence to specify the method of shutting off ports when not enough PoE power
●
is available
NOTE
A full discussion of these concepts may be found in the ExtremeXOS 12.0 Concepts Guide, Power over Ethernet
section.
External PSUs. The Summit X450e-48p switch may be powered by one, two, or three external power
modules through the redundant power input connector on the rear of the switch.
The EPS-C (External Power Supply Chassis) is shipped with the redundant power supply cable that
connects to the redundant input connector on the rear of the switch. The EPS-C chassis can hold from
one to three 600-Watt EPS-600LS (External Power Module) units.
The PoE capability of the Summit X450e-48p switch varies depending on the number of external power
modules in use. Table 30
on the number of power supply modules in use.
Table 30: Number of external PSUs and corresponding PoE behavior

Internal PSU

Status EPS-600LS (1x)
Internal PSU: 370 W of
Power On redundant power
Internal PSU: 370 W of
Power Failure external power only
For complete details, see
Extreme Networks Consolidated ExtremeXOS Hardware Installation Guide
summarizes the PoE power behavior for the Summit X450e-48p switch based
EPS-600LS (2x)
740 W of
external power only
Internal PSU disabled
740 W of
external power only
"EPS-600LS External Power Module" on page
Summit X450e Series Switches
External PSU/Chassis
EPS-600LS (3x) Failed/Disconnected
740 W of 370 W of
external power only internal power only
with 2:1 redundancy
Internal PSU disabled
740 W of No PoE power
external power only
with 2:1 redundancy
328.
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