Cisco 1852 AP with POE Switch, new to POE

[jgarriso@robinsonmfg.com]

Sorry if this is dumb question,  new to POE and just trying to not make a stupid mistake by not asking questions.

I have 7 1852 Access Points located in one area and would like to swap from power injectors to a POE switch so that i can have a clean rack.  I show the power draw is 20.9W.  I am looking at a 10 port  8POE+  @  190W,    

Is there any step down in  using a POE device.  wasn't sure about this note below?  802.3af refers to older POE equipment,  correct?

Note: If 802.3af PoE is the source of power, (1) the 1852e 2.4-GHz radio will shift to 2x3 from 3x4, (2) The USB port and AUX Ethernet port are disabled on both the 1852i and 1852e.

[Giuseppe Larosa]

Hello Jgarriso,

for the standards you can refer to following page

https://en.wikipedia.org/wiki/Power_over_Ethernet

802.3at is more current standard.

The APs may be able to adapt to 802.3af POE by reducing the power usage as you have noted.

The following swiches are small and cheaper but they are not able to provide 200 W POE power see the datasheet

https://www.cisco.com/c/en/us/products/switches/catalyst-2960-c-series-switches/models-comparison.html

For providing higher POE power you should go to a device like C2960X as explained in the following link

https://www.cisco.com/en/US/docs/switches/lan/catalyst2960x/hardware/installation/guide/b_c2960x_hig_chapter_01.html#ID176

For switches with a 370 W power budget, you can budget the PoE and PoE+:

• 15.4 W of PoE output on 24 ports
• 7.7 W of PoE output on 48 ports
• 30 W of PoE+ on 12 ports
• Total power budget can be allocated among the ports

On a per-port basis, you control whether or not a port automatically provides power when an IP phone or an access point is connected.

Hope to help

Giuseppe