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Large Number of FCS Errors in Airwave 7.7.5

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  • 1.  Large Number of FCS Errors in Airwave 7.7.5

    Posted Dec 17, 2013 10:17 AM

    I have a question about FCS Errors. I have Airwave 7.7.5 installed and monitoring our wireless controllers, RAPs and IAPS.

     

    When I check the Raido Statistics in Airwave for various APs, I see a large number of entries in the FCS Errors. Do I need to modify the port settings on the AP to reduce FCS Errors or is this a normal occurrence?  

     

    How do the errors impact Lync Voice Quality?

     

    802.11 Radio Counters Summary (frames/sec)

     
      Current Last Hour Last Day Last Week
    Unacked65717068
    Retries22910
    Failures07207
    Dup Frames0000
    FCS Errors238238195143

     

     



  • 2.  RE: Large Number of FCS Errors in Airwave 7.7.5

    EMPLOYEE
    Posted Dec 17, 2013 10:25 AM

    What matters is WHEN those errors occurred.  A certain number of errors is reasonable for each environment and LYNC can certainly operate WITH those errors just fine.  You should get worried when you have problems.  If you have AMON http://community.arubanetworks.com/t5/Community-Tribal-Knowledge-Base/Why-you-should-always-enable-AMON-on-your-Aruba-Controller-when/ta-p/72104 turned on, you can look at each access point's radio and see how many errors at each time of day to get an idea what is the baseline for your environment.



  • 3.  RE: Large Number of FCS Errors in Airwave 7.7.5

    Posted Dec 17, 2013 11:00 AM

    Thanks for the quick response. I'm not certain when the errors occurred. I'll clear the counters on the AP and monitor.

     

    I pulled radio statistics from another AP. The FCS Errors are much lower than previous AP. So, it appears to be AP specific. 

     

    802.11 Radio Counters Summary (frames/sec)

     
      Current Last Hour Last Day Last Week
    Unacked667822387
    Retries58706240
    Failures12247
    Dup Frames01071
    FCS Errors36100137104


  • 4.  RE: Large Number of FCS Errors in Airwave 7.7.5

    Posted Apr 01, 2014 02:43 PM

    Hello, I need to reset my FCS counters in AMP could you please tell me how you did this?

     

    Mike