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Configuring the Wireless AP

Configuring Wireless AP Settings

SCALANCE WLC711

3-26 C79000-G8976-C260-03, 07/2012, User Guide, V8.11

Configuring Wireless AP Radio Properties

Modifying Wireless AP radio properties can vary significantly depending on the model of the

Wireless AP your are configuring:

• For specific information on modifying a Wireless 802.11n AP, see “Modifying Wireless

802.11n AP W786C/W788C Radio Properties” on page 3-27.

• For specific information on modifying a W786-2HPW, see “Modifying Wireless AP W786-

2HPW Radio Properties” on page 3-39.

Dynamic Radio Management (DRM)

When you modify a Wireless AP’s radio properties, the Dynamic Radio Management (DRM)

functionality of the SCALANCE IWLAN Controller can be used to help establish the optimum

radio configuration for your Wireless APs. DRM is enabled by default. The SCALANCE IWLAN

Controller’s DRM:

• Adjusts transmit power levels to balance coverage between Wireless APs assigned to the same

RF domain and operating on the same channel.

• Scans and coordinates with other Wireless APs to select an optimal operating channel.

The DRM feature consists of three functions:

• Auto Channel Selection (ACS) — ACS provides an easy way to optimize channel

arrangement based on the current situation in the field. ACS provides an optimal solution

only if it is triggered on all Wireless APs in a deployment. Triggering ACS on a single Wireless

AP or on a subset of Wireless APs provides a useful but suboptimal solution. Also, ACS only

relies on the information observed at the time it is triggered. Once a Wireless AP has selected a

channel, it will remain operating on that channel until the user changes the channel or triggers

ACS.

ACS can be triggered by one of the following events:

– A new Wireless AP registers with the SCALANCE IWLAN Controller and the AP Default

Settings channel is Auto.

– A user selects Auto from the Request New Channel drop-down list on the Wireless AP’s

radio configuration tabs.

– A user selects Auto from the Channel drop-down list on the AP Multi-edit screen.

– If Dynamic Channel Selection (DCS) is enabled in active mode and a DCS threshold is

exceeded.

– A Wireless AP detects radar on its current operating channel and it employs ACS to select

a new channel.

– Channel Plan — If ACS is enabled, you can define a channel plan for the Wireless AP.

Defining a channel plan allows you to limit which channels are available for use during an

ACS scan. For example, you may want to avoid using specific channels because of low

power, regulatory domain, or radar interference. Select from the following options:

Depending on the radio used, when defining a channel plan you can either create your

customized channel plan by selecting individual channels or you can select a default 3 or 4

channel plan.

You can use the channel plan to avoid transmission overlap on 40MHz channels of the

Wireless 802.11n APs. To avoid channel overlap between Wireless 802.11n APs that

operate on 40MHz channels, configure the channel plan for the 5 GHz radio band to use

every other channel available.

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Siemens EF 711 Series Guida Utente Pagina 114

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