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Access network design for branch, remote, outdoor and campus locations with Aruba access points, and mobility controllers.
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APs flapping, heartbeat timeout

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  • 1.  APs flapping, heartbeat timeout

    Posted Apr 29, 2022 07:33 AM
    I have a test setup at home runnig Arubaos 8.10

    1 * MM VM
    1 * 7205 hardwar appliance
    2 * AP335s

    have a basic setup with  APs doing  eap-tls auth aganst cppm and that all works just fine.

    Problem is the APs are flapping with "AP is down since 2022-04-29 12:00:44 because of the following reason: Hbt Timeout."

    All devices are on the same vlan (1) nd same /24 net.
    All devices are pingable from other devices

    From the MM

    (nd7205) [MDC] *#show ap debug client-mgmt-counters

    Name Value
    ---- -----
    Tunnel DACL 10
    STM Restart Notification to Auth 1
    Action frames: wmm rrm wnm public dls ba vendor unknown 0 0 0 0 0 0 0 0
    Associations Dropped Due to Auth Throttling 0
    PubSub Messages Rcvd 936
    Auth .1x Queue: High, Pending 550, 0
    Reg timer calls 8957
    BSS publish Failures 0
    Tunnel Timeouts 516

    Any ideas where i start looking to resolve the hbt-timeout issue ?


    Alex Sharaz

  • 2.  RE: APs flapping, heartbeat timeout

    Posted Apr 29, 2022 08:34 AM
    How are the access points being powered?
    Are they negotiating the correct speed/duplex on the switch?

    Any opinions expressed here are solely my own and not necessarily that of Hewlett Packard Enterprise or Aruba Networks.

  • 3.  RE: APs flapping, heartbeat timeout

    Posted May 01, 2022 04:25 AM
    I had a similar issue. It was due to a lack of AP licences. Probably worth to check that.

    Raymond Papaux