Lenovo Flex System x280 X6 Compute Node Installation And Service Manual page 695

management node is powered on and hung, perform a virtual reseat of the
management node from the Chassis Management Module (CMM).
2. Make sure that the Chassis Management Module (CMM) is powered on and is
not hung, by pinging the Chassis Management Module (CMM) from the
management node:
3.
a. If the Chassis Management Module (CMM) is powered on and hung, reset
the Chassis Management Module (CMM).
b. Make sure that the IMM, the management node, and Chassis Management
Module (CMM) are all on the same subnet.
4. Make sure that the management network port (eth0) in the management node
is enabled.
5. Make sure that the management node has an IP address, is on the same
subnet as the Chassis Management Module (CMM), and is able to ping the
Chassis Management Module (CMM).
6. Make sure that the system-management processor in each compute node has a
valid IP address by checking the chassis map of the remote chassis.
7. Note: If the Chassis Management Module (CMM) recently lost connection to
the DCHP server, you must reset the IMM by using the Chassis Management
Module (CMM) interface so that a new IP address can be acquired.
8. If a system-management processor does not have a valid IP address, complete
the following steps:
9.
a. Restart the Chassis Management Module (CMM).
b. Check the IBM Support Portal for any firmware or software 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.
c. Remove and reinstall Chassis Management Module (CMM).
d. Replace the Chassis Management Module (CMM).
10. Check the IBM Support Portal for any service bulletins that are related to
network connectivity.
11. Remove the management node and make sure that the connectors on the
midplane and the management node are not damaged.
12. (Trained service technician only) Complete the following steps:
13.
a. Force the link/duplex speed.
b. Check the connectors on the nodes and the midplane to make sure that no
pins are bent.
c. Replace the I/O expansion card in the management node.
d. Replace the management node.
Related Links:
http://www.ibm.com/support
v
"Installing an I/O expansion adapter" on page 742
v
"Removing an I/O expansion adapter" on page 741
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Chapter 6. Troubleshooting
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