Wireless Access

 View Only

  • 1.  AP unstable goes UP and DOWN on controller

    Posted Mar 17, 2025 05:19 AM

    Hey everyone,

    I'm facing an issue with all my access points that are managed by an Aruba Controller. Every minute, the APs keep going UP and DOWN, but I can still ping their IP addresses.

    I've tried rebooting both the controller and the access points, but the issue persists.

    Can anyone help? What logs should I check on the controller to diagnose this problem?

    Thanks!



  • 2.  RE: AP unstable goes UP and DOWN on controller

    Posted Mar 17, 2025 10:52 AM

    Have you tried opening a case with TAC?

    If you're seeing the APs flapping but the APs themselves aren't rebooting, that indicates the heartbeat between AP and controller is getting interrupted or dropped.  There should be log entries corresponding with this.



    ------------------------------
    Carson Hulcher, ACEX#110
    ------------------------------

    Original Message


  • 3.  RE: AP unstable goes UP and DOWN on controller

    Posted Mar 19, 2025 05:56 AM

    From the controller CLI , you can use the "show ap debug system-status ap-name <flapping-AP-name> command to see quick details on what is happening

    The output is quite lengthy, but the first page or so will have sections for rebootstrap and failover information. If the AP has lost heartbeats to the controller, you will see those events here. 


    Original Message


  • 4.  RE: AP unstable goes UP and DOWN on controller

    Posted Mar 17, 2025 10:57 AM
    Edited by shpat Mar 17, 2025 10:57 AM

    Which ArubaOS are you running on the Controller?
    Do you have any Firewall or Access List sitting in between the Controller and APs? If yes, you need to enable mandatory ports for AP to communicate with the Wireless Controller. 



    ------------------------------
    Shpat | ACEP | ACMP | ACCP | ACDP
    Just an Aruba enthusiast and contributor by cases
    If you find my comment helpful, KUDOS are appreciated.
    ------------------------------

    Original Message


  • 5.  RE: AP unstable goes UP and DOWN on controller

    Posted Mar 19, 2025 05:56 AM

    Also, check your license counts! If you have more APs than licenses, the system may randomly flap some of them up and down as it shifts which ones it thinks have a license. (Disclaimer: I saw this behavior years ago on Aruba 6; I have not replicated it on Aruba 8!)


    Original Message


Related Content