Use the information in this section to troubleshoot multiple
nodes that cannot ping the I/O module.
Complete the following steps until the problem is solved:
- If you have recently updated the firmware for one or more devices
in the chassis (I/O module or CMM), install the previous level of
firmware.
- Make sure that the I/O module is powered on and the applicable
ports are enabled on the I/O module.
- Make sure that all network cables are correctly connected and
that the activity LEDs are lit.
- From the compute node operating system, verify that the network
device is active. Check also the network settings, such as IP address,
subnet mask (if you are using IPv4), DNS, DHCP settings, and vLAN
settings to make sure that the settings match the settings of the
network device. See the documentation that comes with the operating
system for information about viewing network devices and checking
the network settings.
- Check the Lenovo Support Portal for any firmware
updates that might apply to this problem. You can view the release
notes for a firmware update to determine the issues that are addressed
by the update.
- Check the Lenovo Support Portal for any service
bulletins that are related to network connectivity.
- (Trained service technician only) Complete the following steps:
- Force the link/duplex speed.
- Check the connectors on the I/O module to make sure that no pins
are bent.
- Check the connectors on the chassis midplane to make sure that
no pins are bent.
- Remove the I/O module and install a working I/O module in the
same I/O bay.
- If the problem is solved, replace the I/O module that you removed.