topic Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz in Wireless

Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

jakidaslomoro — Mon, 05 Jul 2021 19:11:20 GMT

I am trying to set the freq in the dot11radio1(5.0GHz) but when when I use channel in the int dot11radio 1, it says that it is invalid. Is there anything that I should do? I thought that it is probably due to DFS but that seems not to be the case.

Thanks for your help

Re: Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

patoberli — Thu, 18 Jun 2020 15:18:23 GMT

Can you output a show interfaces?
Or do you try it in the web interface?
Has the AP enough power?

Re: Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

jakidaslomoro — Thu, 18 Jun 2020 16:20:37 GMT

The AP power us enough

This is actually the issue:

Juba-ACB01-RES#conf t
Juba-ACB01-RES(config)#int dot11radio 1
Juba-ACB01-RES(config-if)#channel 5825
^
% Invalid input detected at '^' marker.

Juba-ACB01-RES(config-if)#

I cannot use channel to set the frequency that I want. It seems channel is either disabled in AP1572 or something else is wrong.

Juba-ACB01-RES(config-if)#channel ?
% Unrecognized command
Juba-ACB01-RES(config-if)#channel

So channel is not recognised

Thank you for your help!

Re: Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

patoberli — Fri, 19 Jun 2020 08:09:05 GMT

Can you enter this command and show the output:
sh controllers dot11Radio 1
Which software version is installed? I'm not 100% sure, but I think you have a Mobility Express based model?

Re: Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

jakidaslomoro — Fri, 19 Jun 2020 09:04:45 GMT

Thi

Juba-ACB01-RES#sh controllers dot11radio 1
!
interface Dot11Radio1
Radio Freedom 5, Base Address a453.0e49.39d0, BBlock version 0.00, Software vers ion 4.18.2
Serial number: FOC23245ZT2
Unused dynamic SQRAM memory: 0x0001F3A8 (124 KB)
Unused dynamic SDRAM memory: 0x0032A48C (3241 KB)
Spectrum FW version: 1.15.4
Number of supported simultaneous BSSID on Dot11Radio1: 16
Carrier Set: ETSI (OFDM) (EU) (-E)
Uniform Spreading Required: Yes
Configured Frequency: 0 MHz Channel 0
Serving Frequency: 0 MHz Channel 0 20MHz
Allowed Frequencies:
5500(100) 5520(104) 5540(108) 5560(112) 5580(116) 5660(132) 5680( 136) 5700(140)
Listen Frequencies:
5180( 36) 5200( 40) 5220( 44) 5240( 48) 5260( 52) 5280( 56) 5300( 60) 5320( 64) 5500(100) 5520(104)
5540(108) 5560(112) 5580(116) 5600(120) 5620(124) 5640(128) 5660( 132) 5680(136) 5700(140) 5720(144)
5745(149) 5765(153) 5785(157) 5805(161) 5825(165)

DFS Blocked Frequencies: none
Beacon Flags: 0, Interface Flags 60109, Interface Events 0, Mode 4; Beacons are disabled; Probes are disabled
Configured TxPower: 25 dBm (Level Index 1)
Allowed Power Levels: 25 22 19 16 13 10 dBm
Allowed Client Power Levels: 25 22 19 16 13 10 dBm
Antenna: Rx[]
Tx[a b c d ofdm all]
External
Gain [Allowed 8, In Use 8] (dBi x 2) 10, In Use

s is the output:

Thank you very much!

Re: Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

patoberli — Fri, 19 Jun 2020 10:59:48 GMT

Ok, you probably have configured the wrong country, can you check that?
These are currently the only allowed channels for the selected country and I think because it's set for outdoor:
Allowed Frequencies:
5500(100) 5520(104) 5540(108) 5560(112) 5580(116) 5660(132) 5680( 136) 5700(140)

Re: Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

jakidaslomoro — Fri, 19 Jun 2020 11:58:42 GMT

Yes, it is for Outdoor bridging between two AP.

Sorry, How do check the Country?

Thanks,

Re: Cannot set the channel frequency in the Radio of Cisco Aironet 1572EAC in the 5.0GHz

patoberli — Fri, 19 Jun 2020 13:31:45 GMT

I haven't worked enough with outdoor models, but at least with the information here, the previous model didn't support the channel you want:
https://www.cisco.com/c/en/us/td/docs/wireless/access_point/channels/lwapp/reference/guide/lw_chp2/1520_chp.html
Actually, when checking the Wiki, only those channels listed before are allowed for outdoor in Europe:
https://en.wikipedia.org/wiki/List_of_WLAN_channels#5.0_GHz_(802.11j)_WLAN