Use the information in this section to troubleshoot two
or more compute nodes are unable to connect to the data network (Ethernet)
during initial setup.
Complete the following steps until the problem is solved:
- If you have just updated the firmware for one or more devices
in the chassis (I/O module, CMM, etc), install the previous level
of firmware.
- Make sure that:
- The I/O module is powered on and the appropriate ports are enabled
on the I/O module.
- All cables between the I/O module and the network device (switch
or router) are properly connected and secure, and that the activity
LEDs are lit on the appropriate ports.
- From the compute node operating system, verify the network settings,
such as IP address, subnet mask (if using IPv4), DHCP settings, and
vLAN settings, to ensure that the settings match the settings of the
network device. See the documentation for the operating system for
information about checking network settings.
- From the compute node operating system, make sure that the network
device is active. See the documentation for the operating system for
information about viewing network devices.
- Check the IBM® support Web
site for any firmware updates that might apply to this issue. You
can view the release notes for a firmware update to determine the
issues addressed by the update.
- Check the IBM support Web
site for any service bulletins that are related to network connectivity.
- (Trained service technician only) Perform the following steps:
- Force the Link/duplex speed.
- Check the connectors on the I/O module to ensure that there are
no bent pins.
- Check the connectors on the chassis midplane to ensure there are
no bent pins. See the IBM Flex System Enterprise Chassis Types 8721,
8724, and 8725: Installation and Service Guide.
- Remove the I/O module and install a working I/O module in the
same I/O module bay.
- If the problem is resolved, replace the I/O module that you removed.