You can set the timeout value for CLI sessions by using the system timeout commands. The timeout value specifies how long a CLI session remains idle before being automatically terminated. The CLI timeout value is cluster wide; that is, every node in a cluster uses the same CLI timeout value.
Use the system timeout modify command to modify the CLI timeout value for all nodes in a cluster. The default is 30 minutes. To prevent CLI sessions from timing out, specify a value of 0 (zero). The following example sets the timeout value to 0 (that is, CLI sessions never time out):
node::>system timeout modify -timeout 0