Wireless Access

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Access network design for branch, remote, outdoor, and campus locations with HPE Aruba Networking access points and mobility controllers.
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Errors on Interfaces

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  • 1.  Errors on Interfaces

    Posted Feb 22, 2020 02:11 AM

    Hi All,

    I want to discuss two issues here, am using Aruba 2930F-24G-PoE+-4SFP+ Switch (JL255A) switch at the distribution layer and connecting AP's to the same. I am seeing too many errors and drop on some of the ports, tried connecting the AP's to secondary switch ports but observed the same. And I am observing random slowness issues on Wireless network.

    Screen Shot 2020-02-22 at 12.26.53 PM.png

    Also, am observing VSF port going to error mode randomly and all the AP's and devices connected to one particular switch(same switch every time) going down/unreachable. Below are the logs when the primary switch is unreachable.

     

    Screen Shot 2020-02-22 at 12.31.05 PM.png

    Screen Shot 2020-02-22 at 12.32.26 PM.png

     

    Switch OS:

    Screen Shot 2020-02-22 at 12.35.30 PM.png

     

     

    Kindly, help me with the same.
    Thanks.



  • 2.  RE: Errors on Interfaces

    Posted Feb 22, 2020 03:01 AM

    Hi,

    Upgrade to WC.16.09.0009 Version has solved VSF cashed in some special scenarios. See release notes: https://support.hpe.com/hpesc/public/docDisplay?docId=a00096206en_us

     



  • 3.  RE: Errors on Interfaces

    Posted Feb 22, 2020 03:18 AM

    And how about the errors what I am getting on the ports where AP's are connected?
    Actually AP's were connected to Primary/Master switch, have connected those to secondary/member switch because of the errors. 



  • 4.  RE: Errors on Interfaces

    Posted Feb 22, 2020 03:34 AM

    Erro count does not matter. Ports have transmitted a lot of packets, but as a percentage, it is less than 1%.

     

    Cause maybe

    High utilization of AP,  Channel interference due to distance between each, Wireless beacons due to excessive SSIDs and so

     

    I hope you find this helpful



  • 5.  RE: Errors on Interfaces

    Posted Feb 22, 2020 04:19 AM

    Okay...
    If you see in the below snap, drops are more than the bytes TX/RX, which is current status. Will this make any difference?

    Screen Shot 2020-02-22 at 2.46.37 PM.png



  • 6.  RE: Errors on Interfaces

    EMPLOYEE
    Posted Feb 22, 2020 04:26 AM

    The "Giants" are Path MTU Discovery being performed by the access points.  They can either be ignored, or dealt with by fixing the MTU at 1500 in the AP system profile so that Path MTU discovery is not performed.  

    https://community.arubanetworks.com/t5/ArubaOS-and-Controllers/Oversize-jumbo-frame-errors/m-p/5421/highlight/true#M1860



  • 7.  RE: Errors on Interfaces

    Posted Feb 22, 2020 04:33 AM

    Ohhh... Understood.

     

    Asides that, we can see the Tx drops, which are way more than the successfully Tx packets. Can you please help me in understanding that.

    Screen Shot 2020-02-22 at 3.02.11 PM.png

     



  • 8.  RE: Errors on Interfaces

    EMPLOYEE
    Posted Feb 22, 2020 04:39 AM

    Try fixing the MTU issue and reset the counters to see if the drops are still mounting.  It could be a different issue.



  • 9.  RE: Errors on Interfaces

    Posted Feb 22, 2020 06:01 AM

    I have checked that link for hardcoding MTU, but I don't see that option in my controller. These are controller-based AP's, and controller OS ver is: Aruba7205, 8.3.0.6 

     

    Can you please guide me, how to do on this.