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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
