Our customer in China reported that they got poor 2.4GHz wireless quality(i.e.slow response, slow data transfer). But these not happened on 5GHz band. The main WLC installed in Bangkok, Thailand. This controller take controll all their APs over the country and oversea branchs. We checked into the AP configurations and saw this..
Regulatory Domains: 802.11bg:-E 802.11a:-C
Country Code: CN (China)
AP Part: AIR-CAP2602I-C-K9
After we checked these tables
All regulatory domains for this AP should be -C right?
We followed this page for configuring China country code.
I got noticed in guidelines and limitations
Although the controller supports different access points in different regulatory domains (countries), it requires all radios in a single access point to be configured for the same regulatory domain. For example, you should not configure a Cisco 1231 access point’s 802.11b/g radio for the US (-A) regulatory domain and its 802.11a radio for the Great Britain (-E) regulatory domain. Otherwise, the controller allows only one of the access point’s radios to turn on, depending on which regulatory domain you selected for the access point on the controller.
So, this should be a problem? or I hit a bug?
Configured Country Code(s): TH,US,CN
Regulatory Domain: 802.11a: -ACE, 802.11bg: -ACE