hyper-v cluster 2016, event id 25, Hyper-V-VmSwitch

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  I have a cluster, 2 nodes. There are repeating events id 25, every few second:

  The MAC address 00-15-5D-AE-25-19 has moved from port 53A6AB28-EBD3-4F72-B690-69406077B8A7 (Friendly Name: vSwitchFN_External) to port 6D5ABBEF-0A8E-4F5D-8CC2-0871846CEF82 (Friendly Name: BCK).

  The MAC address 00-15-5D-AE-25-18 has moved from port 53A6AB28-EBD3-4F72-B690-69406077B8A7 (Friendly Name: vSwitchFN_External) to port 9A8780F9-D931-4F85-B087-397A2F718C01 (Friendly Name: HB).

  The MAC address 00-15-5D-AE-25-18 has moved from port 9A8780F9-D931-4F85-B087-397A2F718C01 (Friendly Name: HB) to port 53A6AB28-EBD3-4F72-B690-69406077B8A7 (Friendly Name: vSwitchFN_External).

  The MAC address 00-15-5D-AE-25-19 has moved from port 6D5ABBEF-0A8E-4F5D-8CC2-0871846CEF82 (Friendly Name: BCK) to port 53A6AB28-EBD3-4F72-B690-69406077B8A7 (Friendly Name: vSwitchFN_External).

  Config:

  No NLB (MAC spoofing) on VMs.

  PS C:\Users\pero>  Get-NetLbfoTeam

  
  Name                   : mgmt
  Members                : {M2, M1}
  TeamNics               : mgmt-624
  TeamingMode            : Lacp
  LoadBalancingAlgorithm : Dynamic
  LacpTimer              : Fast
  Status                 : Up

  Name                   : vm
  Members                : {K2L1, K1L1}
  TeamNics               : vm
  TeamingMode            : Lacp
  LoadBalancingAlgorithm : Dynamic
  LacpTimer              : Fast
  Status                 : Up

  
  PS C:\Users\pero> Get-VMNetworkAdapter -ManagementOS

  Name          IsManagementOs VMName SwitchName MacAddress   Status IPAddresses
  ----          -------------- ------ ---------- ----------   ------ -----------
  BCK           True                  vSwitchFN  00155DAE2519 {Ok}
  HB            True                  vSwitchFN  00155DAE2518 {Ok}
  SETswitchSMB2 True                  SETswitch  00155DAE250C {Ok}
  SETswitchSMB1 True                  SETswitch  48DF371EFC2D {Ok}
  LM            True                  SETswitch  00155DAE250D {Ok}

  PS C:\Users\pero> Get-VMSwitch

  Name      SwitchType NetAdapterInterfaceDescription
  ----      ---------- ------------------------------
  vSwitchFN External   Microsoft Network Adapter Multiplexor Driver #2
  SETswitch External   Teamed-Interface

  
  PS C:\Users\pero> Get-VMNetworkAdapterVlan -ManagementOS

  VMName VMNetworkAdapterName Mode   VlanList
  ------ -------------------- ----   --------
         SETswitchSMB1        Access 1980
         LM                   Access 1981
         HB                   Access 1044
         BCK                  Access 887
         SETswitchSMB2        Access 1979

  
  PS C:\Users\pero> Get-NetAdapter

  Name                      InterfaceDescription                    ifIndex Status       MacAddress             LinkSpeed
  ----                      --------------------                    ------- ------       ----------             ---------
  mgmt-624                  Microsoft Network Adapter Multiplexo...       6 Up           F4-03-43-5C-75-91         2 Gbps
  K1L2                      HPE Ethernet 10Gb 2-port 561T Adapter        32 Up           48-DF-37-1F-0F-09        10 Gbps
  K1L1                      HPE Ethernet 10Gb 2-port 561T Adap...#4      30 Up           48-DF-37-1F-0F-08        10 Gbps
  SMB2                      Hyper-V Virtual Ethernet Adapter #5          35 Up           00-15-5D-AE-25-0C        20 Gbps
  SMB1                      Hyper-V Virtual Ethernet Adapter #4          11 Up           48-DF-37-1E-FC-2D        20 Gbps
  LM1                       Hyper-V Virtual Ethernet Adapter #3          16 Up           00-15-5D-AE-25-0D        20 Gbps
  BCK1                      Hyper-V Virtual Ethernet Adapter #2          27 Up           00-15-5D-AE-25-19        10 Gbps
  HB1                       Hyper-V Virtual Ethernet Adapter             19 Up           00-15-5D-AE-25-18        10 Gbps
  M2                        Broadcom NetXtreme Gigabit Ethernet #3       20 Up           F4-03-43-5C-75-91         1 Gbps
  M1                        Broadcom NetXtreme Gigabit Ethernet          24 Up           F4-03-43-5C-75-90         1 Gbps
  vm                        Microsoft Network Adapter Multiple...#2      17 Up           48-DF-37-1E-FC-2C        20 Gbps
  K2L2                      HPE Ethernet 10Gb 2-port 561T Adap...#2      15 Up           48-DF-37-1E-FC-2D        10 Gbps
  K2L1                      HPE Ethernet 10Gb 2-port 561T Adap...#3      18 Up           48-DF-37-1E-FC-2C        10 Gbps

  The events intensively fill the log and sometimes network connectivity for these virtual adapters (BCK, HB) is temporary lost.

  What is problem?

  Rabu, 18 April 2018 13.51

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