PT CPC5565, User Manual, Page: 68 / 118

Chapter 4: System Monitoring and Alarms
68
Serial Interface Subsystem
The IPMC firmware implements a communication protocol over the payload and/or serial
debug interfaces. The communication is in the form of formatted ASCII strings.
The Serial Interface Protocol Lite (SIPL) is based on the IPMI-defined Terminal Mode of the
serial/modem interface. The following sections describe the SIPL:
• “Terminal Mode Messages and Commands,” on page 68
• “Terminal Mode Line Editing,” on page 69
• “Supported PPS Extension Commands,” on page 70
Terminal Mode Messages and Commands
Terminal Mode Message Format
Terminal Mode messages have the following format:
[<message data>]<newline>
The left bracket and the right bracket plus
<newline>
characters serve as START and STOP
delimiters for a message. The IPMC does not support multi-line IPMI messages.
Raw IPMI Messages
The SIPL supports raw IPMI messages that are entered as sequences of case-insensitive hex-
ASCII pairs, each pair optionally separated from the previous one with a single
<space>
character. What follows are examples of raw IPMI request messages in Terminal Mode:
[18 00 22]<newline>
[180022]<newline>]
The IPMC handles raw IPMI messages in the same way as it handles IPMI/PICMG/AMC
messages coming from the IPMB bus and, with the exception that IPMI/PICMG/AMC replies
are routed to the interfaces from which the respective requests have come (i.e. either the serial
debug or payload interface of the IPMC).
Terminal Mode Text Commands
The SIPL does not support Terminal Mode ASCII text commands defined by the IPMI
Specification (section 13.7.8) .