Lenovo Flex System x440 Compute Node Installation And Service Manual page 863

Cannot connect during initial setup
Use the information in this section to troubleshoot the compute node when you cannot connect during initial
setup.
One compute node is unable to connect during the initial setup
Use the information in this section to troubleshoot one compute node that is unable to connect during the
initial setup.
Complete the following steps until the problem is solved:
1. Make sure that:
a. The I/O module is powered on and the applicable 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 applicable ports.
2. From the compute node operating system, verify the network settings, such as IP address, subnet mask
(if you are 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.
3. 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.
4. Check the Support website for any firmware updates that might apply to this issue. You can view the
release notes for a firmware update to determine the issues that are addressed by the update.
5. Remove the compute node from the chassis and check the connectors at the back of the node for bent
pins. If the pins are bent, contact Support. See
880.
6. Install the compute node in another compute node bay to see whether the problem remains. See
"Installing a compute node in a chassis" on page
compute node is connected to a port that has been enabled and that the vLAN settings enable that port
to connect to the network.
7. Check http://www.ibm.com
8. (Trained service technician only) Complete 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
System Enterprise Chassis Types 8721, 8724, and 8725: Installation and Service Guide" at http://
pic.dhe.ibm.com/infocenter/flexsys/information/topic/com.lenovo.acc.8721.doc/product_ page.html
d. Remove the I/O module and install a working I/O module in the same I/O bay.
e. If the problem is solved, replace the I/O module that you removed.
f. If the problem remains, replace the chassis midplane.
One compute node experiences a sudden loss of connectivity
Use the information in this section to troubleshoot one compute node that experiences a sudden loss of
connectivity.
The event is logged in the event log. See the event log for the management node (if available) or see the
event log of the CMM to determine what actions might be required to resolve this issue. See
on page 65.
"Removing a compute node from a chassis" on page
881. If the problem persists, make sure that this
for any service bulletins that are related to network connectivity.
"Flex
.
"IMM event log"
.
Chapter 6 Troubleshooting
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