Problema de dropeo de paquetes sin retrasmincion

quisiera saber cuales son los motivos porque se puede generar el dropeo de paquetes en una antena cambium.

dado que e empezado a ver estos picos de dropeos

There is a number of reasons as to why a link will drop and come back, this will require you to be very meticulous and methodical to solve.

First, make sure you are using the 4.6.1 or 4.6.2 firmware on both ends.

Second, check your SNR, This needs to be as high as you can make it, if the link is in the 5 to 10 range, then you have a lot of interference, aim for the 30’s

Third, retransmission rate is a indicator of many things so we can not use it to determine the actual cause. You can have a crap link and still have low to no retransmissions.
Fourth, check both sides of the link. You are looking at RSSI and SNR and making sure that your transmit frequency isnt getting interfered with.
Fifth, Time of day issues. There exists times of day that your specific radio locations will have issues that ae not easily caught. This is cause from many natural factors such as magnetic shift, solar transit on the antenna face, amount of water in the air, etc. The only way to really know is to have a spectrum scan going and see what happens. This is probably the hardest to rule out.


Hi @gonzalo2,

could you post screenshots of your Monitor >> Performance and Monitor >> Wireless pages. It can put some light on your issue.

Could you post the second part of Performance page and also Wireless page?

Tell me if you need any more information do not hesitate to ask.

according to the supplied information, I would be looking for interference, checking alignment and tx power levels.

first, the easy, drop the AP tx power by 10db and set the ATPC to -60
This will reduce the signal levels but also reduce any issues caused by over loading the receiver front end of the radios.

second, temporarily reduce power until the SM sees the AP around -76 and set the atpc to near -75. Now check alignment, push on the antenna slightly and watch the e-align page, a good strong reflection will have that bar moving a lot but slighly pulling the antenna away will also drop the signal level a lot. A good signal path will show a slight but noticeable drop when pulled gently out of alignment but will come back when the pressure is off and that indicator bar will have a little movement but not a lot.
Once your finished checking alignment, set your AP TX power so that the SM sees the AP in the -60 range. It is ok to go a little hotter power if that increases the SNR significantly. Then set the ATPC so that the AP will see the same power level. Sometimes reducing power a couple db will increase your SNR, so more power isnt always best but more SNR is.

third, interference can be a pain and sporadic which makes isolating it to be interesting and frustrating. Running the spectrum scan on a force 300 radio long enough (like 24hrs without power loss) will give you a fairly good idea about what the radio sees, just be aware that it will not see fast and short bursts unlike a real spectrum analyzer.

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