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AP showing "Jammed" and no logs are showing this activity

Conversationalist

AP showing "Jammed" and no logs are showing this activity

Hello Wireless Community,

 

i have encountered myself with an issue in a few of my organization networks where APs appear with "jammed" status from the Wireless>RF Spectrum section. it happens from maybe a few seconds randomly throughout the day and it affects all APs at some point. have you seen anything like this? The event log doesnt show these peak events and the channel/power doesnt seem to update properly when this happens.

MR52 is the AP model i am using.

 

Thank you!!

9 REPLIES
Head in the Cloud

Re: AP showing "Jammed" and no logs are showing this activity

I have never seen anything like that.  Perhaps something else is clobbering the RF spectrum.

 

Does it happen in both the 2.4Ghz and 5Ghz spectrum?

Conversationalist

Re: AP showing "Jammed" and no logs are showing this activity

I've seen it only on 2.4.. i could think is environmental, but it happens to random APs within the same network, which tells me is not the same area that is jammed. the weird thing is that the RF event log doesn't capture these RF peaks..

Head in the Cloud

Re: AP showing "Jammed" and no logs are showing this activity

2.4Ghz interference is really common.  Look for things like DECT phones and close proximity to microwave ovens.  Bluetooth also uses the 2.4Ghz spectrum - so you can sometimes get loud or noisy bluetooth devices causing a problem.

Conversationalist

Re: AP showing "Jammed" and no logs are showing this activity

would it be better that 2.4 radios get turned off?

Head in the Cloud

Re: AP showing "Jammed" and no logs are showing this activity

I disable 2.4Ghz on just about all customer "corporate" networks.  If you don't need it - disable it.

Conversationalist

Re: AP showing "Jammed" and no logs are showing this activity

the environment is retail, so you can imagine how crowded it can get. i am mainly worried for guest clients that are not 5 Gig capable

Head in the Cloud

Re: AP showing "Jammed" and no logs are showing this activity

If it is for guest WiFi you'll need to leave 2.4Ghz enabled.

Highlighted
Conversationalist

Re: AP showing "Jammed" and no logs are showing this activity

yes, that is what i thought. i am broadcasting my corp in 5 Gig only though.. i will keep monitoring the site, but i wish the even log within the AP's RF section displayed this behavior and generated an alert somehow.

Getting noticed

Re: AP showing "Jammed" and no logs are showing this activity

In an environment where I have many APs where I have planned for density, many times I will only broadcast 2.4 on a handful of the radios to make use of the limited channel availability and RF considerations.  It sounds like you need to leave 2.4 enabled, in that case do you need 2.4 enabled on every AP?  Also, are you band steering clients over the 5 GHz, I would enable that if you have not already.