CCIE Wireless Written Exam: Radio Resource Management Neighbor Messages

# Radio Resource Management Neighbor Messages

### Question

Which of the below statements is true about Radio Resource Management Neighbor messages? (Choose three.)

### Explanations

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A. B. C. D. E. F.

BDF.

Radio Resource Management (RRM) is a feature in Wi-Fi networks that enables the access point (AP) to monitor and adjust the radio frequency (RF) parameters for optimizing the performance of the wireless network. One of the key functions of RRM is to manage the RF neighbor relationships between the APs in the network.

The RRM Neighbor messages are transmitted between neighboring APs to exchange information about RF conditions, such as the RF channel and power level. The three true statements about RRM Neighbor messages are:

A. They are transmitted at minimum power B. They are transmitted at maximum power F. They are transmitted every 60 seconds.

Explanation: A. RRM Neighbor messages are transmitted at minimum power to reduce interference with other channels and APs. The AP sends the RRM neighbor message with the minimum transmit power level that is required to reach the neighboring AP.

B. RRM Neighbor messages are not transmitted at maximum power because it can cause interference with other channels and APs. The AP sends the RRM neighbor message with the minimum power level required to reach the neighboring AP.

C. The statement "they are transmitted at the highest data rate" is incorrect because RRM Neighbor messages are control frames and are transmitted at a fixed data rate. The data rate used for the RRM Neighbor message is determined by the channel width and other RF conditions.

D. The statement "they are transmitted at the lowest supported data rate" is also incorrect because RRM Neighbor messages are control frames and are transmitted at a fixed data rate. The data rate used for the RRM Neighbor message is determined by the channel width and other RF conditions.

E. RRM Neighbor messages are not transmitted on all serviced channels because it can cause interference and consume excessive bandwidth. The AP sends the RRM neighbor message on a dedicated control channel.

F. RRM Neighbor messages are sent every 60 seconds by default. This interval can be adjusted based on network requirements and conditions. The RRM Neighbor message interval can be configured in the APs and the Wireless LAN Controller (WLC).

In summary, the correct statements about RRM Neighbor messages are:

• They are transmitted at minimum power
• They are not transmitted at maximum power
• They are transmitted every 60 seconds.