Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 

What is the Limit Client Power setting in an Access Point?

Resolution

Limit Client Power (mW) determines the maximum power level allowed on client devices that associate to the Access Point (AP). When a client device associates to the AP, the AP sends the maximum power level setting to the client. All settings are in mW. Limit client power tells the client to transmit at XmW.

Cisco highly recommends enabling Dynamic Transmit Power Control (DTPC) on the AP by using the Limit Client Power field in the user interface to ensure that the APs and clients use the same transmit power.

If enabled on the AP, DTPC allows the AP to broadcast its transmit power, and clients can automatically configure themselves to that power while associated with that AP. The Cisco IOS  command for enabling DTPC is power client. It was first introduced in Cisco IOS version 12.2(4)JA.

Cisco AVVID documentation uses the term Dynamic Transmit Power Control (DTPC) to refer to limiting the power level on associated client devices. So the terms DTPC and Limit Client Power setting can be used interchangeably.

Limiting the Power Level for Associated Client Devices

You can also limit the power level on client devices that associate to the access point. When a client device associates to the access point, the access point sends the maximum power level setting to the client.

Beginning in privileged EXEC mode, follow these steps to specify a maximum allowed power setting on all client devices that associate to the access point:



Command

Purpose

Step 1

configure terminal

Enter global configuration mode.

Step 2

interface dot11radio { 0 | 1 }

Enter interface configuration mode for the radio interface. The 2.4-GHz radio is radio 0, and the 5-GHz radio is radio 1.

Step 3

power client

These options are available for 802.11b, 2.4-GHz clients:

{ 1 | 5 | 20 | 30 | 50 | 100 | maximum}

These options are available for 802.11g, 2.4-GHz clients:

{ 1 | 5 | 10 | 20 | 30 | 50 | 100 | maximum}

These options are available for 5-GHz clients:

{ 5 | 10 | 20 | 40 | maximum }

Set the maximum power level allowed on client devices that associate to the access point. All settings are in mW.

Note The settings allowed in your regulatory domain might differ from the settings listed here.

Step 4

end

Return to privileged EXEC mode.

Step 5

copy running-config startup-config

(Optional) Save your entries in the configuration file.

Use the no form of the client power command to disable the maximum power level for associated clients.

Note Aironet extensions must be enabled to limit the power level on associated client devices. Aironet extensions are enabled by default.

For more information on how to configure the mW setting on an AP, refer to the Limiting the Power Level for Associated Client Devices section of the document Configuring Radio Settings.

Problem Type

Interference issues ( EMI / RF issues)

Power / cable compliance

Products

Access point

SW Features

Limit Client Power setting

Version history
Revision #:
1 of 1
Last update:
‎06-22-2009 04:10 PM
Updated by: