6.1.5 How to Enter the OpenBoot PROM (OBP) on a Node

Use this procedure if you need to configure or change OpenBoot PROM settings.

1. Connect to the terminal concentrator port.

   # telnet tc_name tc_port_number

   tc_name

   Specifies the name of the terminal concentrator.

   tc_port_number

   Specifies the port number on the terminal concentrator. Port numbers are configuration dependent. Typically, ports 2 and 3 (5002 and 5003) are used for the first cluster installed at a site.

2. Shut down the cluster node gracefully by using the scswitch(1M) command to evacuate any resource or disk device groups and then shutdown(1M) to bring the node to the OBP prompt.

   # scswitch -S -h node # shutdown -g 0 -y

3. Send a break to the node.

   telnet> send brk

4. Execute the OpenBoot PROM commands.