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NNMi: Network Node Manager i
Version: all versions
“nnmcluster -display” results could be empty and may cause by "the time taken to connect exceeds the connection timeout"
The “-display command” command tries to connect to the cluster for getting the values for display. If the connection was not made successfully in the specified time, then it results in an empty result. If the server/cluster is busy, then this situation could arise.
See the resolution