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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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    Hi ，

    This is a quick note to let you know that I am currently performing research on this issue and will get back to you as soon as possible. I appreciate your patience.
    If you have any updates during this process, please feel free to let me know.

    Best Regards,

    Candy

    Please remember to mark the replies as an answers if they help.
    If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com   

    Kamis, 19 April 2018 09.57
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    Any update on this problem?
    Kamis, 12 Juli 2018 12.49
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    Any new info on this?  Ever since I started seeing all these Hyper-V VmSwitch 25 events all the time, server 2016 crashes at least every 12 hours
    Senin, 05 November 2018 23.42
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    I am in the same boat, also seeing multiple event with ID 25.

    Example:

    The MAC address 00-15-5D-D4-23-00 has moved from port 958DFE2E-7078-4D1D-828F-8C59139F35EA (Friendly Name: vswitch10G_External) to port E3DF345B-7C4C-436B-9EF1-5432B21A2F07 (Friendly Name: vNICMGMT).

    Config:
    WS2016 with Hyper-V.

    TEAM with 2x10Gig Intel x710, LACP Dynamic mode. Cisco switches.

    PS C:\> Get-VMNetworkAdapterVlan -ManagementOS

VMName VMNetworkAdapterName Mode   VlanList
------ -------------------- ----   --------
       LiveMigration        Access 7
       Heartbeat            Access 7
       vNICMGMT             Access 7


PS C:\> Get-VMNetworkAdapter -ManagementOS

Name          IsManagementOs VMName SwitchName MacAddress   Status IPAddresses
----          -------------- ------ ---------- ----------   ------ -----------
Heartbeat     True                  vSWITCH1G  00155DD42302 {Ok}
LiveMigration True                  vswitch10G 00155DD42301 {Ok}
vNICMGMT      True                  vswitch10G 00155DD42300 {Ok}


PS C:\> Get-VMSwitch

Name       SwitchType NetAdapterInterfaceDescription
----       ---------- ------------------------------
vSWITCH1G  External   Microsoft Network Adapter Multiplexor Driver #2
vswitch10G External   Microsoft Network Adapter Multiplexor Driver



    PS C:\> get-netadapter

Name                      InterfaceDescription                    ifIndex Status       MacAddress             LinkSpeed
----                      --------------------                    ------- ------       ----------             ---------
TEAM1G                    Microsoft Network Adapter Multiple...#2       9 Up           E4-43-4B-1A-C8-A9         2 Gbps
vEthernet (Heartbeat)     Hyper-V Virtual Ethernet Adapter #3          10 Up           00-15-5D-D4-23-02         1 Gbps
vEthernet (LiveMigration) Hyper-V Virtual Ethernet Adapter #2           7 Up           00-15-5D-D4-23-01        10 Gbps
vEthernet (vNICMGMT)      Hyper-V Virtual Ethernet Adapter             12 Up           00-15-5D-D4-23-00        10 Gbps
NIC2                      Intel(R) Ethernet 10G X710 rNDC               4 Up           E4-43-4B-1A-C8-8A        10 Gbps
TEAM10G                   Microsoft Network Adapter Multiplexo...      18 Up           E4-43-4B-1A-C8-8A        20 Gbps
NIC4                      Intel(R) Gigabit 4P X710/I350 rNDC #2        11 Up           E4-43-4B-1A-C8-A9         1 Gbps
NIC3                      Intel(R) Gigabit 4P X710/I350 rNDC           15 Up           E4-43-4B-1A-C8-A8         1 Gbps
NIC1                      Intel(R) Ethernet 10G 4P X710/I350 rNDC      13 Up           E4-43-4B-1A-C8-88        10 Gbps

    Any help or guidance as to where to look for answers would be appreciated.

    Marek ITPro

    Selasa, 27 November 2018 11.56
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    ...same problem here - any update or info would be highly appreciated

    Rabu, 02 Januari 2019 16.52
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    I am getting this issue as well, it is causing intermittent connection issues as well as false alerts on our monitoring software telling us a Hyper-V server is down.   I have 4 identical installs at 4 different sites and only one Hyper-V server is showing this issue.  The Team 1 Mac address is the one that shows up in the logs over and over.  This happens over and over about 20 times every 10 minutes.  

    The MAC address EC-EB-B8-97-AB-BF has moved from port 8A69D434-AC4B-4E50-B42B-9A18DDDC51FD (Friendly Name: Microsoft Network Adapter Multiplexor Driver - Virtual Switch_External) to port 3BBEFC3E-861E-41FD-A4D0-27CCA74B9D21 (Friendly Name: Microsoft Network Adapter Multiplexor Driver - Virtual Switch).

    PS C:\Users\administrator.PCS> Get-NetAdapter

Name                      InterfaceDescription                    ifIndex Status       MacAddress             LinkSpeed
----                      --------------------                    ------- ------       ----------             ---------
vEthernet (Microsoft N... Hyper-V Virtual Ethernet Adapter              9 Up           EC-EB-B8-97-AB-BF         1 Gbps
Embedded LOM 1 Port 4     HPE Ethernet 1Gb 4-port 331i Adapter #2       4 Up           EC-EB-B8-97-AB-BF         1 Gbps
Embedded LOM 1 Port 3     HPE Ethernet 1Gb 4-port 331i Adapter          2 Up           EC-EB-B8-97-AB-BE         1 Gbps
Embedded LOM 1 Port 2     HPE Ethernet 1Gb 4-port 331i Adapter #4       7 Up           EC-EB-B8-97-AB-BD         1 Gbps
Embedded LOM 1 Port 1     HPE Ethernet 1Gb 4-port 331i Adapter #3      10 Up           EC-EB-B8-97-AB-BC         1 Gbps
Team 1                    Microsoft Network Adapter Multiplexo...       6 Up           EC-EB-B8-97-AB-BF         4 Gbps

    I 2nd the any update or info would be highly apprecaited.

    Chris Deluca

    Selasa, 08 Januari 2019 14.35
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    Hi Chris,

    I have the same issue on Supermicro servers with onboard Intel X540-AT2 10Gb ethernet.  Driver version 4.1.76.0. Profile: Virtualization Server (Hyper-V). Windows 2016 (14393.2670) Datacenter Hyper-V 3-node Cluster with S2D and 2018-12 CU(KB4483229) installed.  SET teaming was configured at one time but later removed because of frequent disconnects. Another standalone 2016 Hyper-V server with the same hardware and no SET teaming does not have any ID 25 events.

    All cluster nodes get about 1500 ID 25 events per hour.  In my case the event flood stops immediately after updating the VlandID of the problem ManagementOS VMNetworkAdapter.  It is a temporary fix.  The event 25 flood usually comes back a few days or weeks later.

    Get-VMNetworkAdapterVlan -ManagementOS

    Set-VMNetworkAdapterVlan -VMNetworkAdapterName vEthernet* -ManagementOS -Access -VlanID ##

    Hope that helps.

    -Jeremy


    • Diedit oleh jeremy-crw Selasa, 08 Januari 2019 20.19
    Selasa, 08 Januari 2019 20.16
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    Also having the same issue on 1 of 2 severs. Both servers are specced out the same, same OS (Server 2016), but only one of the servers is having the issue.

    I believe the server with the issue at one point had some of it's NICs teamed - however, that is no longer the case.

    Moved all the running VMs off the server with the issue. Still 3 test VMs on the server, but they aren't running.

    Deleted the HyperV Switch and the issue seemed to go away (duh) - but after re-creating the HyperV Switch the warnings start coming back - even though all the VMs on the system are turned off.

    Have upgraded all NIC (Intel X550/I350) drivers on the system to whatever the latest is.

    In the process up installing 2019-01 Cumulative Update to see if it's any help.

    Whatever the issue is, it doesn't SEEM to impart performance - at least not to the point that's it is noticeable.

    Jumat, 11 Januari 2019 23.32
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    Having the same errors logged with Broadcom 57800 10G in Dell 730xd. Any update?

    Only 1 of 9 servers logging the error and that server loses network connectivity. All interfaces show up but no traffic passes. No errors or information found on the switch side.

    Discovered that disabling the domain firewall allows traffic to flow. Re-enabling the firewall, the traffic continues to flow. Compared the firewall settings to the other working servers, no difference.

    Kamis, 14 Februari 2019 20.21
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