IBM Flex System x440 Compute Node Installation And Service Manual page 485

Note: If the CMM recently lost connection to the DCHP server, you must reset
the IMM by using the CMM interface so that a new IP address can be acquired.
5. 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.
Note: If the CMM recently lost connection to the DCHP server, you must reset
the IMM by using the CMM interface so that a new IP address can be acquired.
6. Check http://www.ibm.com/supportportal/ 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.
7. Check http://www.ibm.com/supportportal/ for any service bulletins that are
related to network connectivity.
8. Remove the compute node and make sure that the connectors on the midplane
and the node are not damaged.
9. (Trained service technician only) Complete the following steps:
a. Check the connectors on the node and the midplane to make sure that no
pins are bent.
b. Replace the system board in the compute node.
Multiple nodes cannot ping the management node in the same chassis:
Use the information in this section to troubleshoot multiple nodes that cannot ping
the IBM Flex System Manager management node in the same chassis on the
management 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 CMM is powered on and is not hung, by pinging the CMM
from the management node:
a. If the CMM is powered on and hung, reset the CMM.
b. Make sure that the IMM, the management node, and CMM are all on the
same subnet.
3. Make sure that the management network port (eth0) in the management node
is enabled.
4. Make sure that the management node has an IP address, is on the same subnet
as the CMM, and is able to ping the CMM.
5. 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.
Note: If the CMM recently lost connection to the DCHP server, you must reset
the IMM by using the CMM interface so that a new IP address can be acquired.
If a system-management processor does not have a valid IP address, complete
the following steps:
a. Restart the CMM.
Chapter 6. Troubleshooting
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