This diagram shows how the Sun Control Station software, the IMPItool application and SNMP-based solutions manage the server through in-band and out-of-band communications. The Sun Control Station uses both types of communication, as do the SNMP-based olsutions. IPMItool is a command-line application that uses only out-of-band communications. The SNMP agent live on the SP; the SCS agent lives on the platform.