Extreme networks 17001 Manuale Utente

Summit Family Switches Hardware Installation Guide

The Summit X450e-48p switch is powered by both an internal power supply and an optional external 
redundant power supply system.

The internal Summit X450e-48p power supply can provide 370 W of PoE power, 

as follows:

●

In a 24 port configuration, it provides 15.4 W to each port.

●

In 48-port configuration or any combination of ports where total PoE power does not exceed 370 
watts, it provides 7.7 W to each port.

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.

For a detailed discussion of these concepts, see the Power over Ethernet section in the ExtremeXOS Concepts 
Guide.

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. 

 summarizes the PoE power behavior for the Summit X450e-48p switch based 

on the number of power supply modules in use.

SH_033

10 Gigabit

uplink option

Management port

10 Gigabit

stacking ports

Power socket

External power

supply connection