RF Profile

RF Tag Profiles

RF Profiles allows you to group set of APs that share a common coverage zone together and selectively change how RRM operates the APs within that coverage zone. For example, a university might deploy a high density of APs in an area where a high number of users congregate or meet. This situation requires that you manipulate both data rates and power to address the cell density while managing the co-channel interference. In adjacent areas, normal coverage is provided and such manipulation would result in a loss of coverage.

Using RF profiles and RF tags allows you to optimize the RF settings for set of APs that operate in different environments or coverage zones. RF profiles are created for the IEEE 802.11 radios and are applied to all APs that are mapped to an RF tag, where all APs with that RF tag have the same profile settings.

Configuring an AP Tag (GUI)

Before you begin

Ensure that you have configured an AP Join Profile prior to configuring the primary and backup controllers.

Procedure


Step 1

Choose Configuration > Tags & Profiles > Tags.

Step 2

On the Manage Tags page, click the AP tab.

Step 3

In the Tag Source tab, drag and drop the tag sources to change priorities.

Step 4

Check the Revalidate Tag Sources on APs check box, if required.

Step 5

Click Apply.

Step 6

In the Static tab, click Add.

Step 7

In the Associate Tags to AP window, enter a MAC address.

Step 8

Choose the appropriate Policy Tag Name, Site Tag Name, and RF Tag Name.

Step 9

Click Save & Apply to Device.

Step 10

In the Filter tab, click Add.

Step 11

In the Associate Tags to AP window, enter a rule and AP name regex.

Step 12

Use the slider to enable Active.

Step 13

Enter the Priority. The valid range is from 0 to 127.

Step 14

Choose the appropriate Policy Tag Name, Site Tag Name, and RF Tag Name.

Step 15

Click Save & Apply to Device.


Configuring AP Tag (CLI)

Follow the procedure given below to create an AP tag:

Before you begin

Ensure that you use the same AP tag created here in Wireless RF tag.

Procedure

  Command or Action Purpose

Step 1

configure terminal

Example:

Device# configure terminal

Enters the global configuration mode.

Step 2

ap mac-address

Example:

Device(config)# ap 188b.9dbe.6eac

Enters the AP tag configuration mode.

Important

 

Use only AP MAC address. Do not use Ethernet MAC address.

Step 3

rf-tag rf-tag

Example:

Device(config-ap-tag)# rf-tag rftag1

Configures a named RF tag and adds the AP mac-address to the tag.

Step 4

end

Example:

Device(config-ap-tag)# end

Exits the configuration mode and returns to privileged EXEC mode.

Step 5

show ap tag summary

Example:

Device# show ap tag summary

Displays the tag summary of available APs.

What to do next

Configure Wireless RF tag.

Configuring RF Profile (GUI)

Procedure


Step 1

Choose Configuration > Tags & Profiles > RF.

Step 2

On theRF Profile page, click Add to configure the following:

  • General

  • 802.11

  • RRM

  • Advanced

Step 3

In the General tab, proceed as follows:

  1. Enter a name and description for the RF profile.

  2. Choose the appropriate radio band.

  3. To enable the profile, set the status as Enable.

  4. Click Save & Apply to Device.

Step 4

In the 802.11 tab, proceed as follows:

  1. Choose the required operational rates.

  2. Select the required 802.11n MCS Rates by checking the corresponding check boxes.

  3. Click Save & Apply to Device.

Step 5

In the RRM > General tab, proceed as follows:

  1. Enter the foreign interference threshold between 0 and 100 percent in the Interference field. The default is 10.

  2. In the Clients field, enter the client threshold between 1 and 75 clients. The default is 12.

  3. In the Noise field, enter the foreign noise threshold between –127 and 0 dBm. The default is –70.

  4. In the Utilization percentage field, enter the RF utilization threshold between 0 and 100 percent. The default is 80.

Step 6

In the RRM > Coverage tab, proceed as follows:

  1. Enter the client level in the Minimum Client Level field.

  2. In the Data RSSI Threshold field, enter the actual value in dBm. Value ranges from -60 to -90 dBm and the default value is –80 dBm.

  3. In the Voice RSSI Threshold field, enter the actual value in dBm. Value ranges from -60 to -90 dBm and the default value is –75.

  4. In the Exception Level field, enter the maximum desired percentage of clients on an AP’s radio operating below the desired coverage threshold. Value ranges from 0 to 100% and the default value is 25%.

Step 7

In the RRM > TPC tab, proceed as follows:

  1. Enter the power level assignment on this radio in the Maximum Power Level field. If you configure maximum transmit power, RRM does not allow any access point attached to the device to exceed this transmit power level (whether the power is set by RRM TPC or by coverage hole detection).

  2. In the Minimum Power Level field, enter the minimum power level assignment on this radio.

  3. In the Power Threshold V1 field, enter the cutoff signal level used by RRM when determining whether to reduce an access point’s power.

Step 8

In the RRM > DCA tab, proceed as follows:

  1. Check the Avoid AP Foreign AP Interference check box to cause the controller’s RRM algorithms to consider 802.11 traffic from foreign access points (those not included in your wireless network) when assigning channels to lightweight access points, or unselect it to disable this feature. For example, RRM may adjust the channel assignment to have access points avoid channels close to foreign access points. The default value is selected.

  2. Choose the appropriate channel width.

  3. In the DCA Channels section, the DCA Channels field shows the channels that are currently selected. To choose a channel, select the appropriate check box. Extended UNII-2 channels in the 802.11a/n/ac band do not appear in the channel list: 100, 104, 108, 112, 116, 132, 136, and 140. To include these channels in the channel list, select the Extended UNII-2 Channels check box.

  4. Click Save & Apply to Device.

Step 9

In the Advanced tab, enter the following information in the High Density Parameters section:

  1. In the Max Clients field, set the maximum number of clients allowed globally.

  2. Use the Multicast Data Rate drop-down to choose the data rate for multicast traffic.

    Choose auto to configure the device to use the radio's default data rate.

  3. Use the Rx SOP Threshold drop-down to set the Receiver Start of Packet Detection Threshold (Rx SOP) to determine the Wi-Fi signal level in dBm at which AP radios will demodulate and decode a packet. The higher the RXSOP level, the less sensitive the radio is and the smaller the receiver cell size will be. Reducing the cell size ensures that clients connect to the nearest access point using highest possible data rates. Choose auto to configure the device to use the radio's default threshold.

Step 10

In the Client Distribution section, enter the following:

  • Load Balancing Window—Enter a value between 1 and 20 to specify the load-balancing window and the number of client associations on the AP with the lightest load.

  • Load Balancing Denial Count—Enter a value between 0 and 10 to specify the number of times the client associations will be rejected for a particular AP.

Step 11

In the High Speed Roam section, check the Mode Enable check box to enable the mode.

Step 12

In the Neighbor Timeout field, enter the neighbor timeout value.

Step 13

From the Client Network Preference drop-down list, choose the client network preference.

Step 14

In the ATF Configuration section, use the slider to enable or disable Status and Bridge Client Access.

Step 15

Click Save & Apply to Device.


Configuring an RF Profile (CLI)

Follow the procedure given below to configure an RF profile:

Before you begin

Ensure that you use the same RF profile name that you create here, when configuring the wireless RF tag too. If there is a mismatch in the RF profile name (for example, if the RF tag contains an RF profile that does not exist), the corresponding radios will not come up.

Procedure

  Command or Action Purpose

Step 1

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 2

ap dot11 24ghz rf-profile rf-profile

Example:

Device(config)# ap dot11 24ghz rf-profile rfprof24_1

Configures an RF profile and enters RF profile configuration mode.

Note

 
Use the 24ghz command to configure the 802.11b parameters. Use the 5ghz command to configure the 802.11a parameters.

Step 3

default

Example:

Device(config-rf-profile)# default

(Optional) Enables default parameters for the RF profile.

Step 4

no shutdown

Example:

Device(config-rf-profile)# no shutdown

Enables the RF profile on the device.

Step 5

end

Example:

Device(config-rf-profile)# end

Exits configuration mode and returns to privileged EXEC mode.

Step 6

show ap rf-profile summary

Example:

Device# show ap rf-profile summary

(Optional) Displays the summary of the available RF profiles.

Step 7

show ap rf-profile name rf-profile detail

Example:

Device# show ap rf-profile name rfprof24_1 detail

(Optional) Displays detailed information about a particular RF profile.

Configuring Wireless RF Tag (GUI)

Procedure


Step 1

  1. Choose Configuration > Tags & Profiles > Tags > RF.

Step 2

Click Add to view the Add RF Tag window.

Step 3

Enter a name and description for the RF tag. The name can be ASCII characters from 32 to 126, without leading and trailing spaces.

Step 4

Choose the required 5 GHz Band RF Profile and 2.4 GHz Band RF Profile to be associated with the RF tag.

Step 5

Click Update & Apply to Device.


Configuring Wireless RF Tag (CLI)

Follow the procedure given below to configure a wireless RF tag:

Before you begin

  • You can use only two profiles (2.4-GHz and 5-GHz band RF profiles) in an RF tag.

  • Ensure that you use the same AP tag name that you created when configuring the AP tag task too.

Procedure

  Command or Action Purpose

Step 1

configure terminal

Example:

Device# configure terminal

Enters global configuration mode.

Step 2

wireless tag rf rf-tag

Example:

Device(config)# wireless tag rf rftag1

Creates an RF tag and enters wireless RF tag configuration mode.

Step 3

24ghz-rf-policy rf-policy

Example:

Device(config-wireless-rf-tag)# 24ghz-rf-policy rfprof24_1

Attaches an IEEE 802.11b RF policy to the RF tag.

To configure a dot11a policy, use the 5ghz-rf-policy command.

Step 4

description policy-description

Example:

Device(config-wireless-rf-tag)# description Test

Adds a description for the RF tag.

Step 5

end

Example:

Device(config-wireless-rf-tag)# end

Exits configuration mode and returns to privileged EXEC mode.

Step 6

show wireless tag rf summary

Example:

Device# show wireless tag rf summary

Displays the available RF tags.

Step 7

show wireless tag rf detailed rf-tag

Example:

Device# show wireless tag rf detailed rftag1

Displays detailed information of a particular RF tag.