[j-nsp] EX4200-48PX/PoE+

[JP Velders]

> Date: Thu, 7 Feb 2013 09:33:18 +0000
> From: Nikolay Abromov <nabromov at gmail.com>
> Subject: [j-nsp] EX4200-48PX/PoE+


> However, the PoE budget is equal to 740 W, which means PoE (740/48 = 
> 15.4). I am really confused. Does this platform support full PoE+ on 
> all 48 ports or it does support it only as protocol, but doesn't 
> have enough power to provide 30W on each port (which means 1440 W 
> for PoE budget).

The EX4200 930W PSU's have 740W PoE(+) budget. If you need the full 48 
port PoE+ usage, I'd use two PSU's. The EX4200 line supports two PSU's 
inside of the chassis itself (not some external RPS) after all, but do 
remember to set priorities for the ports in regards to PoE(+) in case 
a PSU or feed fails.

Also note that through LLDP-MED's a lot of VoIP phones (and hopefully 
other PoE-capable devices) are able to do more granular signaling of 
their power needs then Class 1-3 or more, giving you more headroom in 
regards to PoE(+) budget.

Kind regards,
JP Velders