Control Board Server

The control board server (CBS) runs on the SSP. Whenever a client program running on the SSP needs to access the Sun Enterprise 10000 system, the communication is funneled through cbs(1M). cbs(1M), in turn, communicates directly with a control board executive (CBE) running on the primary control board in the Sun Enterprise 10000 system. The primary control board provides the JTAG interface. cbs(1M) converts client requests to the control board management protocol (CBMP) that is understood by CBE. The following diagram shows how the CBS and CBEs are connected.

Figure 10-5 CBS Communication Between SSP and Sun Enterprise 10000 System

cbs(1M) relies on the cb_config(4) file to determine the platform it will manage, and the control board with which it will interact. Do not directly modify the cb_config(4) file; it is automatically maintained by domain management tools and commands.