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AP375 and 377 PoE issue

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  • 1.  AP375 and 377 PoE issue

    Posted Jul 23, 2024 09:27 AM

    We have a number of AP375 and 377 that do not always power correctly via PoE. They are on Cisco 2960 switches which support 802.3at and have LLDP enabled.

    The 375's sometimes come up as inactive after a reboot and this can usually be cleared by rebooting the AP (sometimes several times). Now we are deploying NAC to all AP's and AP switchports and we find that the 375's and 377's always stay as inactive. In the controller log we see:

    Jul 23 13:34:54 2024  stm[9518]: <305061> <9518> <WARN> |stm|  sapm_override_ap_radio_prof: AP 22454-A1-AP00491-7c:57:3c:cf:4a:1c: Disabling radio 0. Power profile is POE-AF
    Jul 23 13:34:54 2024  stm[9518]: <305061> <9518> <WARN> |stm|  sapm_override_ap_radio_prof: AP 22454T-A1-AP00491-7c:57:3c:cf:4a:1c: Disabling radio 1. Power profile is POE-AF

    From the switchport we see:

    22454-A1#sh power inline gigabitEthernet 1/0/40
    Load for five secs: 23%/1%; one minute: 24%; five minutes: 23%
    Time source is NTP, 14:19:49.452 BST Tue Jul 23 2024

    Interface Admin  Oper       Power   Device              Class Max
                                (Watts)
    --------- ------ ---------- ------- ------------------- ----- ----
    Gi1/0/40  auto   on         30.0    Ieee PD             4     30.0

    Interface  AdminPowerMax   AdminConsumption
                 (Watts)           (Watts)
    ---------- --------------- --------------------

    Gi1/0/40              30.0                 30.0

    From the AP debug we see:

    [MDC] #show ap debug system-status ap-name 22454-A1-AP00491-7c:57:3c:cf:4a:1c | begin "Power Status"
    Power Status
    ------------
    Item                        Value
    ----                        -----
    Power Supply                : POE-AT
    LLDP Power                  : Successfully negotiated at 25.5W
    Current Operational State   : No restrictions
    HW POE status               : POE-AF

    We have several hundred of these AP's and not all are affected. About 20 at the moment will not come up as inactive when NAC is applied and many need to be rebooted several times before they will work. There are other AP's on the same switches (635's) with no issues.

    OS version is 8.10.0.12

    We raised a TAC case a while back before we added NAC but they were not able to help and tried to blame the switch. 

    Any ideas on what the issue could be? 



    ------------------------------
    --------------------
    Stewart Smith
    ACMX, ACDX, ACCP, ACSA
    --------------------
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  • 2.  RE: AP375 and 377 PoE issue

    EMPLOYEE
    Posted Jul 24, 2024 09:48 AM

    There were two bugs for basically this issue that were fixed in previous versions:

    AOS-238147 - AOS 8.10.0.5 (This most closely resembles what you are describing)

    AOS-245266 - AOS 8.10.0.8 (This one was opened as the fix for AOS-238147 was observed to not be working for some AP models)

    Have TAC reference those bugs and pull required logging, push for escalation if necessary.



    ------------------------------
    Carson Hulcher, ACEX#110
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    Original Message