Is an AP got problem with multiple regulatory domain?

Thammanoon · ‎08-25-2013

Hello,

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

(http://www.cisco.com/en/US/prod/collateral/wireless/ps5679/ps5861/product_data_sheet0900aecd80537b6a.html#wp9005671)

All regulatory domains for this AP should be -C right?

We followed this page for configuring China country code.

(http://www.cisco.com/en/US/docs/wireless/controller/7.4/configuration/guides/lwap/config_lwap_chapter_010000.html)

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?

WLC information:

Part: AIR-CT5508-K9

Version: 7.3.112

Configured Country Code(s): TH,US,CN

Regulatory Domain: 802.11a: -ACE, 802.11bg: -ACE

Thank you.

Leo Laohoo · ‎08-25-2013

Configured Country Code(s):     TH,US,CN

It means that your AP could be potentially breaking the law as the AP is broadcasting frequencies that are not allowed/supported in the country.

Thammanoon · ‎08-26-2013

This is not a bug. Refer to Cisco TAC response.

Its not a bug, from the WLC you can run the command:

Show country supported tx-power

(WLC-5508-RAC1) >show country supported tx-power

KEY: ## = Tx Power in dBm.

##*= Channel supports radar detection.

. = Channel is not legal in this country.

= Regulatory Domains allowed by this country.

(-,-) = (indoor, outdoor) regulatory Domains allowed by this country.

-----------------:+--+--+--+--+--+--+--+--+--+--+--+--+--+--

802.11BG :

Channels : 1 1 1 1 1

: 1 2 3 4 5 6 7 8 9 0 1 2 3 4

-----------------:+--+--+--+--+--+--+--+--+--+--+--+--+--+--

(-CE ,-CE ) AE : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-A ,-AR ) AR : 27 27 27 27 27 27 27 27 27 27 27 . . .

(-E ,-E ) AT : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-A ,-NA ) AU : 27 27 27 27 27 27 27 27 27 27 27 . . .

(-E ,- ) BA : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-A ,- ) BB : 27 27 27 27 27 27 27 27 27 27 27 . . .

(-E ,-E ) BE : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-E ,-E ) BG : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-E ,- ) BH : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-E ,- ) BN : 20 20 20 20 20 20 20 20 20 20 20 20 20 20

(-A ,-A ) BO : 27 27 27 27 27 27 27 27 27 27 27 . . .

--More-- or (q)uit

(-A ,-AR ) BR : 27 27 27 27 27 27 27 27 27 27 27 . . .

(-E ,- ) BY : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-A ,-ABN ) CA : 27 27 27 27 27 27 27 27 27 27 27 . . .

(-A ,-ABN ) CA2: 27 27 27 27 27 27 27 27 27 27 27 . . .

(-E ,-E ) CH : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-AER ,-AR ) CL : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-E ,-E ) CM : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

(-CE ,-CE ) CN : 20 20 20 20 20 20 20 20 20 20 20 20 20 .

And for 802.11a:

-----------------:+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--

802.11A : 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1

Channels : 3 3 3 4 4 4 4 4 5 5 6 6 0 0 0 1 1 2 2 2 3 3 4 4 5 5 6 6 6 7

: 4 6 8 0 2 4 6 8 2 6 0 4 0 4 8 2 6 0 4 8 2 6 0 9 3 7 1 5 9 3

-----------------:+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--

(-CE ,-C ) AE : . 23 . 23 . 23 . 23 23*23*23*23*30*30*30*30*30*30*30*30*30*30*30*23 23 23 23 23 . .

(-A ,-A ) AR : . 23 . 23 . 23 . 23 23*23*23*23*23*23*23*23*23* . . . 23*23*23*30 30 30 30 30 . .

(-E ,-E ) AT : . 20 . 20 . 20 . 20 20*20*20*20*27*27*27*27*27*27*27*27*27*27*27* . . . . . . .

(-NZ ,-NZ ) AU : . 23 . 23 . 23 . 23 23*23*23*23*30*30*30*30*30*30*30*30*30*30*30*30 30 30 30 30 . .

(-E ,- ) BA : . 20 . 20 . 20 . 20 20*20*20*20*27*27*27*27*27*27*27*27*27*27*27* . . . . . . .

(-N ,- ) BB : . 23 . 23 . 23 . 23 23*23*23*23* . . . . . . . . . . . 30 30 30 30 30 . .

(-E ,-E ) BE : . 20 . 20 . 20 . 20 20*20*20*20*27*27*27*27*27*27*27*27*27*27*27* . . . . . . .

(-E ,-E ) BG : . 20 . 20 . 20 . 20 20*20*20*20*27*27*27*27*27*27*27*27*27*27*27* . . . . . . .

(-E ,- ) BH : . 20 . 20 . 20 . 20 20*20*20*20*27*27*27*27*27*27*27*27*27*27*27* . . . . . . .

(-S ,- ) BN : . 20 . 20 . 20 . 20 20*20*20*20* . . . . . . . . . . . 30 30 30 30 30 . .

--More-- or (q)uit

(-A ,-A ) BO : . 23 . 23 . 23 . 23 23*23*23*23*23*23*23*23*23* . . . 23*23*23*30 30 30 30 30 . .

(-T ,-AN ) BR : . . . . . . . . . 17*17*17*27*27*27*27*27*27*27*27*27*27*27*30 30 30 30 30 . .

(-I ,- ) BY : . 20 . 20 . 20 . 20 20*20*20*20* . . . . . . . . . . . . . . . . . .

(-A ,-ABN ) CA : . 23 . 23 . 23 . 23 23*23*23*23*23*23*23*23*23* . . . 23*23*23*30 30 30 30 30 . .

(-A ,-ABN ) CA2: . 23 . 23 . 23 . 23 23*23*23*23*23*23*23*23*23* . . . 23*23*23*30 30 30 30 30 . .

(-E ,-E ) CH : . 20 . 20 . 20 . 20 20*20*20*20*27*27*27*27*27*27*27*27*27*27*27* . . . . . . .

(-SA ,-A ) CL : . 20 . 20 . 20 . 20 20*20*20*20*27*27*27*27*27*27*27*27*27*27*27*30 30 30 30 30 . .

(- ,- ) CM : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(-C ,-C ) CN : . . . . . . . . . . . . . . . . . . . . . . . 23 23 23 23 23 . .

So from that you can confirm that for 802.11bg you can use E and C regulatory domains.

Abhishek Abhishek · ‎10-15-2013

The issue may be of regulatory domain and restrictions as per Country rules.