MR High Interference

guitb
Conversationalist

MR High Interference

I have a branch with a single Meraki MR access point, and it is reporting 'High Interference' on the RF Spectrum under 'AP Neighbors by RSSI'.

The dashboard indicates 'same channel interference,' but there is only one MR deployed at this location.

 

Additional details:

  • Frequency: 5 GHz

  • Channel: 149 (80 MHz band)

 

Could someone help me understand why it is showing high interference when it is the only access point in use?

10 Replies 10
alemabrahao
Kind of a big deal

The interference is caused by other neighboring APs in the vicinity.

Are you using static or automatic channel assignment?

 

https://documentation.meraki.com/MR/Monitoring_and_Reporting/AP_Neighbors

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

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alemabrahao
Kind of a big deal

Another thing, avoid using a channel width of 80 MHz, use a maximum of 40 MHz.
Because you are considerably reducing the number of available channels by using a width of 80 MHz.

 

https://www.ekahau.com/blog/channel-planning-best-practices-for-better-wi-fi/

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

Please, if this post was useful, leave your kudos and mark it as solved.
guitb
Conversationalist

I am using AUTO channel assignment. Interestingly, when I check the 'AP Neighbors by RSSI,' it appears as though the MR is causing interference with itself, which seems illogical.

alemabrahao
Kind of a big deal

Are you sure about this? Can you share a screenshot?

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

Please, if this post was useful, leave your kudos and mark it as solved.
guitb
Conversationalist

Here are some screenshots

 

MR_3.png

MR_1.png

alemabrahao
Kind of a big deal

I don't see any indication of what was said and the channel utilization is low at just over 5%.

Are you having any problems?

As said, avoid using a channel width of 80 MHz, use a maximum of 40 MHz.

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

Please, if this post was useful, leave your kudos and mark it as solved.
guitb
Conversationalist

I'm not sure why the MR isn't switching channels. If the interference is coming from an external device, it should automatically move to a different channel to avoid it.

alemabrahao
Kind of a big deal

Channel utilization is very low.

alemabrahao_0-1740752048001.png

 

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

Please, if this post was useful, leave your kudos and mark it as solved.
alemabrahao
Kind of a big deal

Take a look on the documentation I sent you.

I am not a Cisco Meraki employee. My suggestions are based on documentation of Meraki best practices and day-to-day experience.

Please, if this post was useful, leave your kudos and mark it as solved.
guitb
Conversationalist

Thank you @alemabrahao 

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