04-26-2011 06:50 AM
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.
04-26-2011 07:14 AM
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
04-26-2011 07:20 AM
Thanks Eric.
Besides providing support for 11 channels what else will changing the Primary Channel selection dropdown to Upper effect?
04-26-2011 07:35 AM
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
04-26-2011 07:43 AM
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.
04-27-2011 12:53 PM
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
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