Multiple nodes cannot ping the CMM in the same chassis

Use the information in this section to troubleshoot multiple nodes that cannot ping the CMM on the management network in the same chassis.

Complete the following steps until the problem is solved:
  1. Make sure that the Chassis Management Module is powered on and the applicable ports are enabled on the CMM. If the CMM is hung, reset the CMM.
  2. Reset the CMM.
  3. Check for firmware updates for the CMM.
  4. Reset the CMM to factory defaults and attempt to discover the nodes again. Allow enough time for the IMMs to acquire a network address.
  5. Replace the CMM.
  6. Make sure that the IMM in the compute node has acquired an IP address from the CMM by using the Setup utility on the node.
    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.
  7. 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 IP address, configure the IMM network settings correctly or reset the IMM to automatically acquire a new IP address.
  8. Check the Lenovo Support Portal 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 the update addresses.
  9. Remove the compute node from the chassis and check the connectors on the back of the node for bent pins. If the pins are bent, contact Support.
  10. Check the Lenovo Support Portal for any service bulletins that are related to network connectivity.
  11. (Trained service technician only) Complete the following steps:
    1. Force the link/duplex speed.
    2. Check the connectors on the CMM to make sure that no pins are bent.
    3. Check the connectors on the chassis midplane to make sure that no pins are bent.
    4. Remove the CMM and install a working CMM in the same bay.
    5. If the problem is solved, replace the CMM that you removed.