3702e antenna management

[mcselltor]

Hello,

we have purchased 3702e and some of these access points can only get PoE (802.3af). In document http://www.cisco.com/c/en/us/products/collateral/wireless/3700-series-access-point/data_sheet_c78-729421.html in table 1 under „Power draw“ is said one antenna will be deactivated:

802.3at                 4x4:3 on 2.4/5 GHz                         16,1W

802.3af                 3x3:3 on 2.4/5 GHz                         15,4W

Which antenna will be activated in this case?

Thanks,

Torsten

[George Stefanick · Accepted solution]

I thought this was a good question. I asked my Cisco SME, which by the way he is a BAD ASS. This is what he shared ..

Hi George,

The antenna that gets disabled is D. This is very easy to test out and see the results with the “show controller do X” command

With full power

Antenna:     Rx[a b c d ]
        Tx[a b c d  ofdm all]



With reduced 15.4 power 

Antenna:    Rx[a b c ]
        Tx[a b c  ofdm all]
 

[mcselltor]

Hello Georg,

thanks for your advice.

Torsten

[George Stefanick]

Just for you my friend:

http://www.my80211.com/home/2015/10/6/which-antenna-gets-deactivated-when-you-provide-less-than-fu.html