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Cannot communicate with the CMM

Use the information in this section to troubleshoot the compute node when you cannot communicate with the Chassis Management Module (CMM) on the data network.

  1. Make sure that all ports in the connection path are enabled and that you can ping the CMM. If you are unable to ping the CMM, see Cannot ping the CMM on the management network.
  2. Make sure that the protocols that you are using are enabled.
  3. Note: By default, only secure protocols are enabled, for example, SSH and HTTPS.
  4. Make sure that you can log into the CMM. If you are unable to log in to the CMM, see Cannot log in to the CMM.
  5. Note: Press and hold the button for 10 seconds to reset the CMM configuration settings. All user modified configuration settings are reset to the factory default values.