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HCI compute node vmnic port down due to SFP failure

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Applies to

NetApp HCI Compute Node

Issue

  • One vmnic port on an HCI compute node remains down after host reboot.
  • No issues detected from the connected switch side.
  • nicinfo.sh.txt from ESXi bundle:

Name    PCI Device    Driver      Admin Status  Link Status  Speed  Duplex  MAC Address        MTU   Description

------  ------------  ----------  ------------  -----------  -----  ------  -----------------  ----  -----------

vmnic0  0000:3b:00.1  nmlx5_core  Up            Up           10000  Full    XX:XX:XX:XX:XX:XX  9000  Mellanox Technologies MT27710 Family [ConnectX-4 Lx]

vmnic1  0000:19:00.1  nmlx5_core  Up            Up           10000  Full    XX:XX:XX:XX:XX:XX  9000  Mellanox Technologies MT27710 Family [ConnectX-4 Lx]

vmnic2  0000:18:00.0  ixgben      Up            Up           10000  Full    XX:XX:XX:XX:XX:XX  1500  Intel(R) Ethernet Controller 10G X550

vmnic3  0000:18:00.1  ixgben      Up            Up           10000  Full    XX:XX:XX:XX:XX:XX  1500  Intel(R) Ethernet Controller 10G X550

vmnic4  0000:19:00.0  nmlx5_core  Up            Down             0  Half    XX:XX:XX:XX:XX:XX  9000  Mellanox Technologies MT27710 Family [ConnectX-4 Lx]

vmnic5  0000:3b:00.0  nmlx5_core  Up            Up           10000  Full    XX:XX:XX:XX:XX:XX  9000  Mellanox Technologies MT27710 Family [ConnectX-4 Lx]

  • vmkernel.log entry:

2025-12-12T10:35:50.968Z cpu9:2098318)<NMLX_INF> nmlx5_core: vmnic4: nmlx5_en_UplinkLinkStateSetOS - (nmlx5_core_en_uplink.c:4764) Changing link status from UP Full Duplex 10000 to DOWN Half Duplex 0

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