You must have console access to all cluster nodes in the cluster. You can use the Parallel Console Access (pconsole) utility from the command line to log into the cluster remotely. The pconsole utility is part of the Oracle Solaris terminal/pconsole package. Install the package by executing pkg install terminal/pconsole. The pconsole utility creates a host terminal window for each remote host that you specify on the command line. The utility also opens a central, or master, console window that propagates what you input there to each of the connections that you open.
The pconsole utility can be run from within X Windows or in console mode. Install pconsole on the machine that you will use as the administrative console for the cluster. If you have a terminal server connected to your cluster nodes' serial ports (serial consoles), you can access a serial console port by specifying the IP address of the terminal server and relevant terminal server's port (terminal-server's IP:portnumber).
See the pconsole (1) man page for more information.