Lenovo Flex System x220 Installation And Service Manual page 633

Action
Complete the following steps until the problem is solved:
1. Follow the steps in "Multiple nodes cannot ping the management node in the same chassis" on
page 623.
2. Follow the steps in "Multiple nodes cannot ping the management node in a different chassis" on
page 624.
Cannot ping the Flex System Manager management node on the management
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 management 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 management network.
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. If the CMM is powered on and hung, reset the CMM. Make sure that the IMM, the management
node, and CMM are all on the same subnet.
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 626. Make sure that the compute node appears on the chassis map (it might not be
fully discovered by the management node software).
4. 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.
5. In the CMM user interface, click Chassis Management > Component IP Configuration and make sure
that the IP address that is listed is the same as the IP address that is displayed in the Setup utility. If
it is not the same, configure the IMM network settings correctly.
6. 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.
7. Check http://www.lenovo.com/support for any service bulletins that are related to network connectivity.
8. Remove the compute node and make sure that the connectors on the chassis midplane and the node
are not damaged.
9. (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.
c. Replace the system-board assembly (see "Removing the system-board assembly" on page 683 and
"Installing the system-board assembly" on page 684).
.
Chapter 6 Troubleshooting
625