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Aruba 2930F - High collision or drop rate

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  • 1.  Aruba 2930F - High collision or drop rate

    Posted Sep 01, 2022 08:04 AM
      |   view attached
    Hi 

    We have recently installed Aruba Access Points AP 515, AP 535, AP 575 on Aruba 2930F POE + Switches.
    Since the deployment we have been receiving errors on ClearPass of Timeouts, "Client did not complete EAP transaction"

    Then when i checked on the access switches we have these logs attached.

    Interface that connect the Access Points

    W 09/01/22 09:32:34 00331 FFI: port 19-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 18-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 17-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 16-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 15-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 14-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 13-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 12-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 11-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 10-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 9-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 8-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 7-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 6-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 5-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 4-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 3-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 2-High collision or drop rate. See help.
    W 09/01/22 09:32:34 00331 FFI: port 1-High collision or drop rate. See help.

    what could be causing this

    Thank you in advance
    ​


  • 2.  RE: Aruba 2930F - High collision or drop rate

    EMPLOYEE
    Posted Sep 01, 2022 09:27 AM
    Looks almost like a broadcast storm or similar. Drop TX happens in general when there is more traffic to send than the port can handle, like if you push 150Mbps of broadcast/multicast traffic to a 100Mbps port.

    Can you check 'show interface 1' and 'show run interface 1'?
    And as comparison the same for interface 20?

    What is your uplink speed?

    What also may give some insights is to run a packet capture on one of the ports (or a similar port) and see what the actual traffic is. Seems to me that those high Drop TX can't be good for your performance.

    ------------------------------
    Herman Robers
    ------------------------
    If you have urgent issues, always contact your Aruba partner, distributor, or Aruba TAC Support. Check https://www.arubanetworks.com/support-services/contact-support/ for how to contact Aruba TAC. Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

    In case your problem is solved, please invest the time to post a follow-up with the information on how you solved it. Others can benefit from that.
    ------------------------------

    Original Message