Summit X450E-48P Power Supplies; Internal Power Supply; External Power Supplies - Extreme Networks Summit X250e-24t Hardware Installation Manual

Summit Family Switches
Figure 46: Summit X450e-48p Switch Rear Panel
Management port
10 Gigabit
uplink option

Summit X450e-48p Power Supplies

The Summit X450e-48p switch is powered by both an internal power supply and an optional external
redundant power supply system.
Internal Power Supply. The internal Summit X450e-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 or any combination of ports where total PoE power does not exceed 370 watts. If the total
system demands exceed this power limit, you can 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 is in the ExtremeXOS 12.0 Concepts Guide, Power over Ethernet section.
External Power Supplies. The Summit X450e-48p switch can 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.
on the number of power supply modules in use.
Table 10: Number of External PSUs and Corresponding PoE Behavior
Internal PSU
Status
Internal PSU:
Power On
Internal PSU:
Power Failure
For more information, see
56
supply connection
10 Gigabit
stacking ports
Table 10 summarizes the PoE power behavior for the Summit X450e-48p switch based
EPS-600LS (1x) EPS-600LS (2x)
370 W of 740 W of
redundant power external power only
Internal PSU disabled
370 W of 740 W of
external power only external power only
"EPS-600LS External Power Module" on page
External power
EPS-600LS (3x)
740 W of
external power only
with 2:1 redundancy
Internal PSU disabled
740 W of
external power only
with 2:1 redundancy
Summit Family Switches Hardware Installation Guide
Power socket
SH_033
External PSU/Chassis
Failed/Disconnected
370 W of
internal power only
No PoE power
69.