Use the information in this section to troubleshoot the compute node
when you cannot communicate with the CMM on
the data network.
Note: Communications errors from compute nodes can take
up to 20 minutes to appear in the CMM event log.
Complete
the following steps until the problem is solved:
- 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.
- Make sure that the protocols that you are using are enabled.
Note: By
default, only secure protocols are enabled, for example, SSH and HTTPS.
- 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.
- Reset the CMM to
the default settings by pressing the reset button on the CMM.
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.