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Single node cannot ping to IOM

Use the information in this section to troubleshoot a single compute node that cannot ping the I/O module.

  1. If you have recently updated the firmware for one or more devices in the chassis (I/O module) and have verified the network settings, install the previous level of firmware.
  2. Make sure that the I/O module is powered on and the applicable ports are enabled on the I/O module.
  3. Make sure that all network cables are correctly connected and that the activity LEDs are lit. If the cables are correctly connected and the LEDs are not lit, replace the cable.
  4. Check the IBM 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 are addressed by the update.
  5. Remove the node from the chassis and check the connectors at the back of the node for bent pins. If the pins are bent, go to the IBM Support Portal to submit a service request.
  6. Install the compute node in another node bay, if one is available. If the problem remains, make sure that the compute node is connected to a port that has been enabled and that the vLAN settings allow that port to connect to the network.
  7. Check the IBM Support Portal for any service bulletins that are related to I/O-module connectivity.
  8. If the problem remains, replace the I/O module, and go to the IBM Support Portal to submit a service request.
  9. (Trained service technician only) Complete the following steps:
    1. Force the link/duplex speed.
    2. Check the connectors on the I/O module 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 I/O module and install a working I/O module in the same I/O bay.
    5. If the problem is solved, replace the I/O module that you removed.