As described in the previous chapter, TamoGraph allows for full
customization of all virtual AP parameters. This functionality
makes it possible to create virtual AP presets that match actual
hardware from major AP vendors, such as Cisco, Aruba, etc.
Before we explain this procedure, we would like to answer one of
the most frequently asked questions:
Why do you not add vendor-specific AP presets
TamoGraph includes only a few generic AP presets,
because real-world, hardware APs have many configurable parameters
only you know how your AP is configured.
The simplest example is an 802.11ac AP by vendor XYZ that supports
80, 40, and 20 MHz channels in the 5 GHz band. What channel width
should we use to add that specific AP to the list of our presets?
If we select 80 MHz channel width and you configured your
real-world AP to use 20 MHz, your virtual model will be incorrect.
Adding three different presets is also a bad idea because channel
width is not the only configurable parameter. There are others,
such as AP transmit power, channel number, etc. Therefore,
you, the WLAN administrator, should create unique AP presets
in accordance with your unique AP configurations. This is very
easy. All AP presets consist of two parts:
configuration parameters (power, channel, installation height and
This can be expressed by a simple formula:
Preset = AP Parameters + Antenna Preset
Yet another reason we do not add vendor-specific AP presets is that
many outdoor AP models do not have integrated antennas.
Instead, the user can select from a number of external
antennas, which means that the same AP model may have multiple
antenna options and, therefore, multiple presets.
To illustrate the process, let us assume that we want to create an
AP preset for a new WLAN for which we will use Aruba AP-325 access
points. First, click on the
tool on the toolbar and select
Manage / Create New Presets:
This opens the
where you can modify all the AP parameters and change the antenna
type. The screenshot below illustrates a few changes we made to the
default values for the 5 GHz radio to ensure that the virtual AP
matches the real-world Aruba AP-325 APs that we will
The following changes have been made:
The preset name was changed to “My Aruba AP-325”.
The channel width was set to 40 MHz. Although Aruba AP-325 APs
support up to 80 MHz, let us suppose we will limit the channel
width to 40 MHz.
Let us imagine that this is a dense deployment, so the transmit
power was reduced to 12 dBm.
AP-325 APs are 4x4 MIMO devices, so the default number of spatial
streams was changed to four.
Finally, we need to click
to change the generic antenna to one that matches the AP. As
mentioned above, we can choose from a variety of antenna models by
major Wi-Fi equipment vendors or one of the generic antenna types.
In this case, we will select the Aruba AP-320 series
If you cannot find a matching antenna, please refer to
which lists a few options available to users.
You may want to click
to examine 3D views of the selected antenna diagram and to adjust
the antenna orientation either by rotating the diagram views or
entering numeric values.
confirms the antenna selection. The same adjustments and antenna
selection should be performed for the 2.4 GHz radio.
saves the new preset. The preset is now available alongside the
generic presets in the drop-down list. Managing AP presets is
similar to managing walls or attenuation zone presets. You can
select an existing AP preset, modify it, and click
to save it under the same name. To save it under a different name,
change the preset name before clicking
You can also click
to create a new preset from scratch. To delete an existing preset,