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8851 with KEM

Hi,

 

I have a site that recently changed their switches to Fortinet 424E-FPOE 421w, but now their 8851 KEM's are not working. My question is, what is the power needed of the 8851 with a KEM installed. 

 

Thanks

1 Accepted Solution

Accepted Solutions

The two supported PoE standards for the KEM is 802.3af and 802.3at. 802.3at gives maximum power to 25.5 watts and 802.3af gives maximum of 15.4 watts. 802.3at vs 802.3af: Which PoE Standard to Use Based on that the power that your Fortinet switch gives should be with the accepted range. I haven't been able to find any specific figures for what the KEM uses in idle or active state and I don't know that by heart either. Hopefully someone else in the Community can pitch in with this.



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5 Replies 5

Simple search with your favorite search engine would have given you the answer.

Power Requirements
  • 8851 + (1) KEM – 8851 must be powered via 802.3af PoE, 802.3at PoE, or Cisco Power Cube 4.
  • 8851 + (2) KEM – 8851 must be powered via Cisco Power Cube 4.


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Rodger Thanks,

I see that the 8851 consumes 6.4w in idle state and 12.2w in active, but would happen to know the KEM's? I ask because the Fortiswitch is 421w and per port is 17.5w

The two supported PoE standards for the KEM is 802.3af and 802.3at. 802.3at gives maximum power to 25.5 watts and 802.3af gives maximum of 15.4 watts. 802.3at vs 802.3af: Which PoE Standard to Use Based on that the power that your Fortinet switch gives should be with the accepted range. I haven't been able to find any specific figures for what the KEM uses in idle or active state and I don't know that by heart either. Hopefully someone else in the Community can pitch in with this.



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Thanks again!