linux + already using mac address

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from the dmseg output we can see the following:



seems that the error about the duplicate mac comes from team0 card



as I know team card is internal card in the HW
so how it can be that we get duplicate MAC?



is it mean that other HW machine that have also team0 card have the same MAC?



we have redhat machine version 7.3



[14114.080815] i40e 0000:81:00.0 p1p1: already using mac address 1c:f3:fe:2a:ac:43
[14114.080826] team0: Port device p1p1 removed
[14114.374799] i40e 0000:81:00.1 p1p2: returning to hw mac address 3c:fd:fe:2a:cc:42 
[14114.380880] team0: Port device p1p2 removed
[14115.318871] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
[14115.720534] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
[14116.095680] team0: Mode changed to "activebackup"
[14116.541807] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
[14116.541875] team0: Port device p1p1 added
[14116.541998] i40e 0000:81:00.0 p1p1: set new mac address 66:8a:23:fd:0d:b4
[14116.550291] i40e 0000:81:00.0 p1p1: returning to hw mac address 1c:f3:fe:2a:ac:43
[14116.979676] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
[14116.979754] team0: Port device p1p2 added
[14116.979891] i40e 0000:81:00.1 p1p2: set new mac address 1c:f3:fe:2a:ac:43
[18629.573081] perf interrupt took too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
[20255.441762] i40e 0000:81:00.0 p1p1: NIC Link is Down
[20255.633559] i40e 0000:81:00.1 p1p2: NIC Link is Down
[20785.109003] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
[20874.033531] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
[116397.167023] perf interrupt took too long (5006 > 5000), lowering kernel.perf_event_max_sample_rate to 25000





linux networking rhel dmesg






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    up vote
    0
    down vote

    favorite












    from the dmseg output we can see the following:



    seems that the error about the duplicate mac comes from team0 card



    as I know team card is internal card in the HW
    so how it can be that we get duplicate MAC?



    is it mean that other HW machine that have also team0 card have the same MAC?



    we have redhat machine version 7.3



    [14114.080815] i40e 0000:81:00.0 p1p1: already using mac address 1c:f3:fe:2a:ac:43
    [14114.080826] team0: Port device p1p1 removed
    [14114.374799] i40e 0000:81:00.1 p1p2: returning to hw mac address 3c:fd:fe:2a:cc:42 
    [14114.380880] team0: Port device p1p2 removed
    [14115.318871] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
    [14115.720534] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
    [14116.095680] team0: Mode changed to "activebackup"
    [14116.541807] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
    [14116.541875] team0: Port device p1p1 added
    [14116.541998] i40e 0000:81:00.0 p1p1: set new mac address 66:8a:23:fd:0d:b4
    [14116.550291] i40e 0000:81:00.0 p1p1: returning to hw mac address 1c:f3:fe:2a:ac:43
    [14116.979676] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
    [14116.979754] team0: Port device p1p2 added
    [14116.979891] i40e 0000:81:00.1 p1p2: set new mac address 1c:f3:fe:2a:ac:43
    [18629.573081] perf interrupt took too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
    [20255.441762] i40e 0000:81:00.0 p1p1: NIC Link is Down
    [20255.633559] i40e 0000:81:00.1 p1p2: NIC Link is Down
    [20785.109003] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
    [20874.033531] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
    [116397.167023] perf interrupt took too long (5006 > 5000), lowering kernel.perf_event_max_sample_rate to 25000





    linux networking rhel dmesg






    share























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      from the dmseg output we can see the following:



      seems that the error about the duplicate mac comes from team0 card



      as I know team card is internal card in the HW
      so how it can be that we get duplicate MAC?



      is it mean that other HW machine that have also team0 card have the same MAC?



      we have redhat machine version 7.3



      [14114.080815] i40e 0000:81:00.0 p1p1: already using mac address 1c:f3:fe:2a:ac:43
      [14114.080826] team0: Port device p1p1 removed
      [14114.374799] i40e 0000:81:00.1 p1p2: returning to hw mac address 3c:fd:fe:2a:cc:42 
      [14114.380880] team0: Port device p1p2 removed
      [14115.318871] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14115.720534] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14116.095680] team0: Mode changed to "activebackup"
      [14116.541807] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14116.541875] team0: Port device p1p1 added
      [14116.541998] i40e 0000:81:00.0 p1p1: set new mac address 66:8a:23:fd:0d:b4
      [14116.550291] i40e 0000:81:00.0 p1p1: returning to hw mac address 1c:f3:fe:2a:ac:43
      [14116.979676] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14116.979754] team0: Port device p1p2 added
      [14116.979891] i40e 0000:81:00.1 p1p2: set new mac address 1c:f3:fe:2a:ac:43
      [18629.573081] perf interrupt took too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
      [20255.441762] i40e 0000:81:00.0 p1p1: NIC Link is Down
      [20255.633559] i40e 0000:81:00.1 p1p2: NIC Link is Down
      [20785.109003] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [20874.033531] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [116397.167023] perf interrupt took too long (5006 > 5000), lowering kernel.perf_event_max_sample_rate to 25000





      linux networking rhel dmesg






      share













      from the dmseg output we can see the following:



      seems that the error about the duplicate mac comes from team0 card



      as I know team card is internal card in the HW
      so how it can be that we get duplicate MAC?



      is it mean that other HW machine that have also team0 card have the same MAC?



      we have redhat machine version 7.3



      [14114.080815] i40e 0000:81:00.0 p1p1: already using mac address 1c:f3:fe:2a:ac:43
      [14114.080826] team0: Port device p1p1 removed
      [14114.374799] i40e 0000:81:00.1 p1p2: returning to hw mac address 3c:fd:fe:2a:cc:42 
      [14114.380880] team0: Port device p1p2 removed
      [14115.318871] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14115.720534] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14116.095680] team0: Mode changed to "activebackup"
      [14116.541807] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14116.541875] team0: Port device p1p1 added
      [14116.541998] i40e 0000:81:00.0 p1p1: set new mac address 66:8a:23:fd:0d:b4
      [14116.550291] i40e 0000:81:00.0 p1p1: returning to hw mac address 1c:f3:fe:2a:ac:43
      [14116.979676] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [14116.979754] team0: Port device p1p2 added
      [14116.979891] i40e 0000:81:00.1 p1p2: set new mac address 1c:f3:fe:2a:ac:43
      [18629.573081] perf interrupt took too long (2503 > 2500), lowering kernel.perf_event_max_sample_rate to 50000
      [20255.441762] i40e 0000:81:00.0 p1p1: NIC Link is Down
      [20255.633559] i40e 0000:81:00.1 p1p2: NIC Link is Down
      [20785.109003] i40e 0000:81:00.0 p1p1: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [20874.033531] i40e 0000:81:00.1 p1p2: NIC Link is Up 10 Gbps Full Duplex, Flow Control: RX/TX
      [116397.167023] perf interrupt took too long (5006 > 5000), lowering kernel.perf_event_max_sample_rate to 25000





      linux networking rhel dmesg




      linux networking rhel dmesg





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      yael

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