frame counter 0xffffffff ?

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  • May 23, 2017 at 10:29 am #19278
    Tamas Bondar
    Participant

    For some of my nodes I see this in the network server log: `
    15:20:19:432|INFO| GW:00:80:00:00:00:00:c4:b3|FRAME-RX|Parsing 1 packets
    15:20:19:434|INFO| ED:55-66-77-88-00-00-00-04|CHECK-PKT|FCNT: ffffffff LAST-FCNT: 000008e9 Duplicate: no
    15:20:19:434|INFO| ED:55-66-77-88-00-00-00-04|CHECK-MIC|ADDR: 00:00:00:04 failed
    `
    Any idea what this might indicate?

    UPDATE: After deleting the node from the network server and adding it again it started to work. This is a ABP node.

    Thanks a lot,
    -Tamás

    May 23, 2017 at 11:39 am #19279
    Jason Reiss
    Keymaster

    Did you reset the counter on the device?
    The counters are strictly checked to be increasing.

    If a counter is found to be less than last received then the packet is invalid which is why CHECK-MIC reports failed.

    FCNT is reported as FFFFFFFF as the packet is not authenticated.

    May 23, 2017 at 11:42 am #19280
    Tamas Bondar
    Participant

    Yes, that explains it. Thanks a lot!

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