AP541N 802.11b/g/n mode channel overlap

[andyhoien]

We have 3 AP541N units deployed in a doctors office.  All of them are set to 802.11b/g/n mode.  2 of these units are used to provide non-secured internet access to patients and are using channel 7.  The other AP is for our private network secured using WPA2/AES operating on channel 1.  There are several other access points in our proximity using channel 6 and I'm trying to minimize interference.When selecting wireless mode 802.11 b/g/n I have only channels 1-7 to choose from.  What I really want to do is change our public wlan to use channel 11 to avoid the other business's AP which are using channel 6. 

Should I be using a different mode altogether?  In your expereince which mode will provide the best transmission rates and range?

thanks.

[Eric Moyers]

Hi, My name is Eric Moyers. I am a Network Support Engineer in the Cisco Small Business Support Center.

The reason you are seeing only channels 1-7 while in the 40 Mhz bandwidth is that you are doubling up your bandwidth from 20. You find that setting under Wireless - Advanced Settings - Channel Bandwidth. Changing the Primary Channel selection dropdown to Upper or changing the Channel Bandwidth to 20 Mhz will give you the ability to select channel 11.

I hope this helps. Please let us know if we can assist you further.

Eric Moyers
Cisco Network Support Engineer
1-866-606-1866

[andyhoien]

Thanks Eric.

Besides providing support for 11 channels what else will changing the Primary Channel selection dropdown to Upper effect?

[Eric Moyers]

Hi Mr Hoien,

Changing the Primary Channel from Lower to Upper will only change the channels that are doubled. Lower being channels 1-7 at 40 Mhz and Upper being 6-11 at Mhz. There should be no change or effect anywhere else.

Eric

[andyhoien]

Does that mean my selectable channels will range from 6-11 only?  I would prefer to have 1-11 as options.  Will I have to change my Channel Bandwidth to 20mhz to accomplish this?  Thanks.

[Eric Moyers]

Hi, Hr. Hoien,

Sorry I wasn't able to get back to you sooner. The Support center here today has been very busy. Yes, In order to have chennels 1-11, you will need to select the 20 Mhz band.

Eric Moyers
Cisco Network Support Engineer
1-866-606-1866