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 -g0 -y -i0

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   Caution –

   Do not use send brk on a cluster console to shut down a cluster node. If you use send brk and then type go at the OBP prompt to reboot, the node will panic. This functionality is not supported within a cluster.

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3. Execute the OBP commands.