Security-risk Interferer 'WiFi Invalid Channel' is detected

[jliscano]

The past few weeks we started receiving this message from the WCS and it's been pretty frequent.

Message: Security-risk Interferer 'WiFi Invalid Channel' is detected. - Controller Name: xxxxxxxxx

I couldn't find this particular message anywhere on the forums and google.

Any insight is appreciated.

Regards,

Jerome

[tdorsey123]

I too need to get some more info on this error.  From what I have gathered so far the error is detected by CleanAir and I am guessing is supposed to be highlighting this vulnerability.

http://www.wve.org/entries/show/WVE-2006-0050

In my case I am seeing this error only on one access point out of the 80 in the building which I don't know if that is significant.

I am wondering if there is a non-security/non-critical reason why this alert might crop up.

Update:  Just found this

http://www.cisco.com/web/CA/events/pdfs/CNSF2011-Understanding-CleanAir-Technology-Jim-Florwick.pdf

Page 62 has a couple sentences.

[jliscano]

Thanks!  Nice find on the pdf.  I'm also seeing only on 1-2 of our AP's out of 78 as well.

[George Stefanick]

Check, I think this is showing APs that are not on 1,6 and 11 perhaps ?

[jliscano]

I think it has to do with our freight company neighbors implementing their new RFID since the only AP's reporting this are within its reach.

Thanks!

[nyalcin]

this links are not helpfull

[d.friday]

The ap has detected something using a non-standard channel. You will need a spectrum analyzer to figure out what it causing it.

I hope this helps

[ammahend]

may be this link will shed some light

https://community.cisco.com/t5/wireless-mobility-documents/cleanair-traps-about-wifi-invalid-channel-and-wifi-inverted/ta-p/3160613