Kevin - This is becuase not all clients will honor code 17 from the access point telling the client that the ap is busy. While some client do.It is the responsibility of the client to honor, process or discard that association response frame with reason code 17. Some clients ignore it, even though it is part of the 802.11 specification. The standard dictates that the client driver must look for another AP to connect to since it receives a 'busy' message from the first AP it tries. Many clients do not do this and send the association request again. The client in question is allowed on to the wireless network upon subsequent attempts to associate. Question about Band Select and RF Profiles.If I use RF Profiles and have Band Select enabled on the WLAN do I also have to check the 'Probe Response' box under Band Select on the Client Distribution Tab of the RF Profile to successfully have Band Select enabled on this AP?When applying RF Profiles does this section allow me to override the global settings and if the Probe Response box is not checked does it basically disable band select feature on this AP?
Maybe the same question. Just confused how this works in concert with the global.Thanks.John Cosgrove.
.IntroductionTo change the frequency (channel) on Cisco Aironet devices, refer to these documents:. The section ofThe actual frequency allowed depends on the regulatory body that controls the radio spectrum in the location where the unit is used. If you leave the setting at auto, when it starts, the unit samples all allowed frequencies and attempts to pick a frequency that is not in use. This setting is only allowed on the root unit, which is in charge of setting up the radio cell.To set a frequency, connect to the bridge, go to the menu, and select Main Configuration Radio Frequency.In the Frequency window, type a value for the frequency, or leave the setting as auto. The section of Configuring the Radio and Basic Setting. The for theThe default channel setting for the access point radios is least congested; at startup, the access point scans for and selects the least-congested channel. For most consistent performance after a site survey, however, we recommend that you assign a static channel setting for each access point.
On the Radio Settings page, click on the AP to view the RF configuration, then select the antenna physically installed on the AP. As referenced in the install guide, two identical antennas are necessary if using a 2-port antenna on the MR84. Other APs may allow for different antennas per-band based on their antenna port configuration.
The channel settings on your access point correspond to the frequencies available in your regulatory domain. See 'Channels and Antenna Settings,' for the frequencies allowed in your domain.Each 2.4-GHz channel covers 22 MHz. The bandwidth for channels 1, 6, and 11 does not overlap, so you can set up multiple access points in the same vicinity without causing interference.
Both 802.11b and 802.11g 2.4-GHz radios use the same channels and frequencies.The 5-GHz radio operates on eight channels from 5180 to 5320 MHz. Each channel covers 20 MHz, and the bandwidth for the channels overlaps slightly. For best performance, use channels that are not adjacent (44 and 46, for example) for radios that are close to each other.
The section of. The section ofThe default channel setting for the wireless device radios is least congested; at startup, the wireless device scans for and selects the least-congested channel. For the most consistent performance after a site survey, however, we recommend that you assign a static channel setting for each access point.Note In places where RF interference might be causing clients to occasionally get disconnected from the wireless network, setting the wireless interface to run on a different channel, such as channel 1 (2412), might avoid the interference.The channel settings on the wireless device correspond to the frequencies available in your regulatory domain. See the access point's hardware installation guide for the frequencies allowed in your domain.Note Cisco Aironet CB20A client radios sometimes fail to associate to the AIR-RM21A radio module because the CB20A client does not support all the channels supported by the AIR-RM21A radio module.
![Config Config](/uploads/1/2/5/4/125424083/113370502.png)
The default channel setting for the AIR-RM21A radio module, least congested, often results in the access point settling on one of these frequencies that the CB20A client radio does not support: channel 149 (5745 GHz), channel 153 (5765 GHz), channel 157 (5785 GHz), and channel 161 (5805 GHz). To avoid this problem, set the channel on the AIR-RM21A radio module to one of the channels supported by the CB20A client.Each 2.4-GHz channel covers 22 MHz.
The bandwidth for channels 1, 6, and 11 does not overlap, so you can set up multiple access points in the same vicinity without causing interference. Both 802.11b and 802.11g 2.4-GHz radios use the same channels and frequencies.The 5-GHz radio operates on eight channels from 5180 to 5320 MHz. Each channel covers 20 MHz, and the bandwidth for the channels overlaps slightly. For best performance, use channels that are not adjacent (44 and 46, for example) for radios that are close to each other.Note Too many access points in the same vicinity creates radio congestion that can reduce throughput.
![Rf band configuration Rf band configuration](/uploads/1/2/5/4/125424083/135713370.png)
A careful site survey can determine the best placement of access points for maximum radio coverage and throughput.Problem TypeConfigure / Configuration issuesProductsAccess pointBridge.