Packer Error Rate (PER) calculation

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  • May 19, 2017 at 7:27 am #19220
    Tamas Bondar
    Participant

    Hi All,

    In my network server logs (mLinux, v1.0.32) I can see packet error rate values in the range from 1% to 40%:

    
8:37:30:678|INFO| ED:55-66-77-88-00-00-00-04|PER|43.856331%
...
12:13:1:294|INFO| ED:55-66-77-88-00-00-00-03|PER|9.523809%
12:14:53:348|INFO| ED:55-66-77-88-00-00-00-05|PER|0.875274%

    My nodes are on a test bench in the lab, just a few meters away from the gateway and all running the very same firmware.

    Two questions:
    – How is PER calculated exactly?
    – Any ideas what might cause such a big difference in PER when the nodes are so similar to each other from every aspect.

    Thanks,
    -Tamás

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