Lenovo Flex System x220, Installation And Service Manual

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3. Make sure that all network cables are correctly connected and that the activity LEDs are lit.
4. 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.
5. Check http://www.lenovo.com/support 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.
6. Check http://www.lenovo.com/support for any service bulletins that are related to network connectivity.
7. (Trained service technician only) Complete the following steps:
a. Force the link/duplex speed.
b. Check the connectors on the I/O module to make sure that no pins are bent.
c. Check the connectors on the chassis midplane to make sure that no pins are bent.
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.
Cannot ping the Flex System Manager management node on the data network
Use the information in this section to troubleshoot the compute node when one or more compute nodes
cannot ping the management node on the data network.
Single node cannot ping the management node in the same chassis
Use the information in this section to troubleshoot a single compute node that cannot ping the Flex System
Manager management node in the same chassis on the data network.
Action
Complete the following steps until the problem is solved:
1. Make sure that the management node is powered on and is not hung, by logging in to the management
node. If you are unable to log in from the management network, attempt to log in from the data network.
If the management node is powered on and hung, perform a virtual reseat of the management node
from the CMM.
2. Make sure that the I/O module is powered on and is not hung, by pinging the I/O module from the
management node. If the I/O module is powered on and hung, reset the I/O module. Make sure that the
correct ports are enabled for the node on the I/O module.
3. Make sure that the compute node is the only one in the chassis that the management node cannot
ping. If it is not, follow the steps in “Multiple nodes cannot ping the management node in the same
chassis” on page 623.
4. Make sure that the configuration settings in the node are correct and that the port is enabled.
5. Check http://www.lenovo.com/support 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.
6. Check http://www.lenovo.com/support for any service bulletins that are related to network connectivity.
7. Remove the compute node and make sure that the connectors on the chassis midplane and the node
are not damaged.
8. (Trained service technician only) Complete the following steps:
a. Force the link/duplex speed.
b. Check the connectors on the node and the chassis midplane to make sure that no pins are bent.
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Flex System x220 Compute Node Installation and Service Guide