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Troubleshooting
General Troubleshooting
Server unable to find the adapter
Ensure that the adapter is placed correctly
Make sure the adapter slot and the adapter are
compatible
Install the adapter in a different PCI Express slot
Use the drivers that came with the adapter or
download the latest
Make sure your motherboard has the latest BIOS
Try to reboot the server
The adapter no longer works
Reseat the adapter in its slot or a different slot, if
necessary
Try using another cable
Reinstall the drivers for the network driver files
may be damaged or deleted
Reboot the server
Adapters stopped working after installing another
adapter
Try removing and re-installing all adapters
Check that cables are connected properly
Make sure your motherboard has the latest BIOS
Link indicator light is off
Try another port on the switch
Make sure the cable is securely attached
Check you are using the proper cables that do not
exceed the recommended lengths
Verify that your switch and adapter port are
compatible
Link light is on, but with no communication
established
Check that the latest driver is loaded
Check that both the adapter and its link are set to
the same speed and duplex settings
Linux Troubleshooting
Environment Information
cat /etc/issue
uname -a
cat /proc/cupinfo | grep ‘model name’ | uniq
ofed_info -s
ifconfig -a
ip link show
ethtool <interface>
ethtool -i <interface_of_Mellanox_port_num>
ibdev2netdev
Card Detection
lspci | grep -i Mellanox
