Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

11b and 11g association issues

My customer site is having issues with 802.11b clients not associating to a WLC 4402-50 controller that is setup for both 11b and 11g. 802.11g is working fine. As a test, the client's wireless mode was set to 802.11g at the user WIC Settings. But, it still showing connection failed. Also found that the user MAC still coming in the Controller as 802.11b.

What are we missing here?

Thanks for any help.


Re: 11b and 11g association issues

Do all .11B clients fail, or just some?

- If all - I'd look at WLC issues

- If some - I'd look at client issues

1. Update all of your drivers and software versions.

2. Sniff the packets over the air and see what rates the WLAN is advertising / what rates the client will support (ie, check what's actually happening).

Hall of Fame Super Red

Re: 11b and 11g association issues

Hi Richard,

Just to add a note to the good info from Richard. Are you running any 11b supported data rates like 2.0 5.5 6.0 9.0 11.0

Note The client must support the basic rate that you select or it cannot associate to the wireless device. If you select 12 Mbps or higher for the basic data rate on the 802.11g radio, 802.11b client devices cannot associate to the wireless device's 802.11g radio.

Just a thought,