Lenovo Flex System x480 X6 Compute Node Installation And Service Manual page 957

• "Installing an I/O expansion adapter" on page 1011
• "Installing a compute node in a chassis" on page 976
• "Removing a compute node from a chassis" on page 975
• "Removing an I/O expansion adapter" on page 1011
• http://www.ibm.com/support
Two or more compute nodes are unable to connect to the data network (Ethernet) during initial setup
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.
1. 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.
2. Make sure that:
a. The I/O module is powered on and the appropriate ports are enabled on the I/O module.
b. 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.
3. 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.
4. 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.
5. 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.
6. Check the IBM support web site for any service bulletins that are related to network connectivity.
7. (Trained Service Technician Only) Perform the following steps:
a. Force the link/duplex speed.
b. Check the connectors on the I/O module to ensure that there are no bent pins.
c. 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."
d. Remove the I/O module and install a working I/O module in the same I/O module bay.
e. If the problem is resolved, replace the I/O module that you removed.
Related Links:
• http://www.ibm.com/support
• "Installing an I/O expansion adapter" on page 1011
• "Removing an I/O expansion adapter" on page 1011
Two or more compute nodes experience a sudden loss of network (Ethernet) connectivity
Use the information in this section to troubleshoot two or more compute nodes experience a sudden loss of
network (Ethernet) connectivity.
.
Chapter 6 Troubleshooting
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