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Community Member

client are not connected through 802.11n (AP 1140, WLC 5.2.178)

Hi

Device details.

WLC 4402: software version 5.2.178.0

AP 1140: AIR-LAP1141N-A-K9

client using Intel wireless card N-Supported

Currently I have configure the WLC to support 802.11n still. when user are connecting to the network the are connected by 802.11G, 802.11n is not showing in the client PC. and Speed is 54mbps.

Please help me in sorting out this issue.

Waiting for your early responce

11 REPLIES
Cisco Employee

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Hii Please check following :

1. WLAN is WMM enabled

2. Security must be WPA2+aes or Open

3. 11n Rates and support should be enabled on the network (a or b/g)

4. Max data rates without 40 Mhz will be 150 and with 40 Mhz will be 300

5. To verify please issue the command on the AP "show controller d1"

Community Member

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Hi,

Thanks for your response.

Here we are using WPA+WPA2+AES in WLAN.

And we are getting 54mbps speed.In another WLAN we don't have any security where we are getting 144mbps.So will 11n support WPA+WPA2+AES encryption?

What we need to change in our configuration to get desired speed?

How to get 300mbps speed?

Please help, regarding this issue.

Cisco Employee

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Hii ,

1. you need to configure WPA2+AES for the WLAN with WMM enabled on Qos page.

2. AFter doing this you will be able to connect at 144

3. For making 300 Mbps , Enable 40 Mhz operation for the AP

1. Go to AP radio setting page , disable radio

2. Make channel and power assignment as custom

3. Change the channel width to 40 Mhz

4. Enable radio

to make sure 40 mhz is enabled , go to AP console and issue "show controller d1"

you will see both primary and extended channel in use.

* 40 Mhz is recomended for 802.11a only

Community Member

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Hi,

Currently we have enabled WPA2+AES.Client laptop is not connected to network.Whenever we are selecting WPA+WPA2+AES +TKIP with 802.1x client are connecting with 54mbps.So what we need to do?

Cisco Employee

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Please select WPA2+Aes on client side for the WLAN association. The client should get connected with WPA2+AES.

Can you please provide folowing details:

1. Show wlan

2. Show client detail <1n client mac>

Cisco Employee

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Please select WPA2+Aes on client side for the WLAN association. The client should get connected with WPA2+AES.

Can you please provide folowing details:

1. Show wlan

2. Show client detail <1n client mac>

Community Member

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Please check show wlan and show client details.

Is there any problem selecting WPA+WPA2+AES instead of WPA2+AES?

Community Member

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Please check show wlan and show client details.

Is there any problem selecting WPA+WPA2+AES instead of WPA2+AES?

Community Member

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Hi,

Do not use TKIP in the encryption. Use WPA2+AES. Also please check if you are working in a mixed environment. I mean there should be only 11n clients for testing.

Community Member

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

You have configured for AES or TKIP. Please enable one at a time to check.

Cisco Employee

Re: client are not connected through 802.11n (AP 1140, WLC 5.2.1

Hii

The problem is, you are using AES with WPA1 .Please use WPA2 with AES.

I can see ur client connecting with WPA1+AES .

Which supplicant you are using ?

see attched snapshot for wlan sec

Thanks

Vinay

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