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Dual Band Aruba 318 and AP-ANT-45 connection



I am evaluating to deploy a Dual Band Aruba 318 Access Point altogether with an external antenna Dual Band AP-ANT-45. Nevertheless, how to connect these two elements is not described in any document I have seen so far.


The Access Point 318 has 6 antenna connectors, 4 for 5GHz and 2 for 2.4GHz.  The AP-ANT-45 has 4 RP-SMA terminals.


I am guessing that we can connect these elements as follows:

  • 2 RP-SMA terminals of the antenna to 2 5GHz connectors of the Access Point
  • 2 RP-SMA terminals of the antenna to 2 2.4GHz connector of the Access Point
  • 2 5GHz connectors of the Access Point will not be used

The last, is just my guess.  I would like your support confirming or rejecting it. If anyone has relevant information to properly deploy these two elements together, please provide it.




MVP Guru

Re: Dual Band Aruba 318 and AP-ANT-45 connection

With the AP-318 having two separate radios and antenna chains, you will need 2 antennas, one per radio. The AP-ANT-45 is a dual-band antenna and works great for Access Points that have built-in diplexers to get the signal of both radios to a single connector.


You should connect one AP-ANT-45 with 4 wires to the 4 connectors of the 5 GHz radio. Then you need another antenna for the 2.4GHz radio with 2, 3 or 4 elements of which you only connect 2 wires (H and V) to the 2.4 GHz radio of the AP-318.


Please also check the Aruba 318 Access Point Ordering Guide, which mentions an antenna selection for radio 0 (5GHz) and another for radio 1 (2.4GHz).


Please consult your Aruba partner or local Aruba SE to find out what is the best AP solution for your situation.

If you have urgent issues, please contact your Aruba partner or Aruba TAC (click for contact details).
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