Configure FortiAP MIMO values

You can configure Multiple-Input Multiple-Output (MIMO) values on select FortiAP and FortiAP-U models, offering more flexibility when using a third-party antenna connected to a limited number of AP ports.

MIMO mode configuration is supported on the following:

Family	Series
FortiAP	F and G series models
FortiAP-U	EV and F series models

MIMO values can be set under radio configuration when creating or editing a FortiAP profile. The value range available is confined within each AP platform and radio's MIMO specifications (default, 1x1, 2x2, 3x3, 4x4, 8x8).

config wireless-controller wtp-profile
  edit < profile_name >
    config radio-< number >
      set mimo-mode [ actual modes supported depend on AP platform ]
    end
  next
end

For example, FAP-231G radios support a maximum of 2x2 MIMO, so you can select between 1x1 or 2x2. Meanwhile FAP-831F radios support a maximum of 8x8 MIMO, so you can select between 1x1, 2x2, 3x3, 4x4 or 8x8.

To configure MIMO mode values:

config wireless-controller wtp-profile
  edit FAP431G-default
    config radio-1
      set mimo-mode 3x3
    end
    config radio-2
      set mimo-mode 3x3
    end
    config radio-3
      set mimo-mode 2x2
    end
  end

To verify that the MIMO mode settings have been applied:

FortiAP-431G # rcfg | grep mimo
   mimo,chainmask : 3, 0x7 (mimo) 0xf (power) 0x7/0x7 (oper)
   mimo,chainmask : 3, 0x70 (mimo) 0xf0 (power) 0x70/0x70 (oper)
   mimo,chainmask : 2, 0x3 (mimo) 0xf (power) 0x3/0x3 (oper)