I've got a refurbished EX4200-48P switch, see config below. When I plug the only PSU, the power consumption on wattmeter is about 140W, when I plug the second one, the load goes up almost twice (about 240W). Is it normal behavior? Nothing is plugged in and PoE is disabled on all ports. What if I would put a 320W PSUs inside, could the power consuption be lower? I do NOT need PoE.
admin@ex4200> show chassis hardware
Item Version Part number Serial number Description
Chassis BQ0210090238 EX4200-48P
Routing Engine 0 REV 24 750-021255 BQ0210090238 EX4200-48P, 48 POE
FPC 0 REV 24 750-021255 BQ0210090238 EX4200-48P, 48 POE
CPU BUILTIN BUILTIN FPC CPU
PIC 0 BUILTIN BUILTIN 48x 10/100/1000 Base-T
PIC 1 REV 07 711-026017 CH0214300379 2x 10GE SFP+
Power Supply 0 REV 03 740-020959 AV0810080623 PS 930W AC
Power Supply 1 REV 03 740-020959 AV0810080643 PS 930W AC
Fan Tray Fan Tray
PoE Power Budget is already reserved even if you disable PoE.
Table 1: Power Supply Rating and PoE Power Budget for EX4200 Switch Models
Switch Model Number
Number of PoE-enabled Ports
Power Supply Rating
PoE Power Budget
In dual PSU setup, we have exchanged 2x EX-PWR-930-AC for 2xEX-PWR-320-AC and total power saving is about 100W per switch. It probably has something to do with PSU efficiency (5% of 930W = 45W) * 2
The power consumption will depend on the number of PoE ports that you are using.
By default 15.4W is the maximum power per PoE ports. So if you are not using a lot of PoE ports then you can use 2xEX-PWR-320-AC.
You can get the clarification of power budget from below link
Hope this helps.