Supported PoE devices

[kian_hong2000]

Hi,

I try to search for any cisco whitepaper regarding the PoE. But i could not find it.

I need to know what is the maximum number of PoE devices the switches can supported.

Is there any impact to the switch if the PoE power is used up ?

Thanks

[Ton V Engelen]

Hi, it depends per model

How many devices depends on how much poe power is available and on how much power a device wants.

show power inline

Module   Available     Used     Remaining

          (Watts)     (Watts)    (Watts)

------   ---------   --------   ---------

5           420.0      275.0       145.0

In this 3750-E switch i have 420 watts available

i use access points which consume 15,4 watts each and ip phones which consume 6 watts each

So i could hook up a total of 27 access points *15,4 = 415,8 watts

When using a combination of devices with different power consumption, some calulation needs to be done

Hooking up 10 phones would be 60 watts plus hooking up 10 access points would be 154 watts, with a total of 214 watts,  206 watts remaining