Main Board Server Management Intel® Server System S7000FC4UR TPS
Revision 1.0
Intel order number E18291-001
46
3.3.9 Intelligent Platform Management Bus (IPMB)
The IPMB is a communication protocol that utilizes a 100 KB/s I
2
C bus. The IPMB
implementation in the BMC is compliant with the IPMB v1.0, revision 1.0, with the BMC having
an IPMB slave address of 0x20.
The BMC both sends and receives IPMB messages over the IPMB interface. Non-IPMB
messages received via the IPMB interface are discarded. In addition to the public IPMB, the
BMC has five private I
2
C buses that extend throughout the system. Figure 9 shows all the I
2
C
buses.
3.3.10 Serial Over LAN (SOL)
Serial Over LAN (SOL) provides bi-directional transport of system Serial B port data
encapsulated in IPMI over LAN packets. This provides the following:
Out-of-band LAN access to the BIOS console redirection
Service partition application communication
Operating system console interaction without the BIOS
Software being LAN-enabled or aware of anything beyond a serial port interface
The console type is set to VT100+ and data bits are set to 8bits/charatecter, no parity and one
stop bit as per IPMI messaging requirement.
The BMC supports the Intel proprietary SOL (now known as SOL 1.0) as well as the IPMI 2.0-
defined SOL feature, implemented as a standard payload type over RMCP+. The boardset
provides the SOL interface via the Intel
®
Remote Management Module 2 (RMM2) and RMM2
NIC port.
3.3.11 Emergency Management Port (EMP) Interface
The EMP interface is the Intel implementation of the IPMI 2.0 over serial feature, providing an
out-of-band RS232 connection into the server management subsystem. This gives system
administrators the ability to access low-level server management firmware functions by using
commonly available tools. To make it easy to use and provide the most compatibility with LAN
and IPMB protocols, the protocol adopts some features of both protocols.
Both the basic and PPP proxy modes of IPMI over serial are supported and are available
regardless of the system DC power state. The following EMP features are supported:
Hardware handshaking
Data Carrier Detect (DCD) signals
The main board provides the EMP interface through the Serial B external RS232 connector. The
BMC has control over which agent (BMC or system) has access to Serial B.
To Next Page
Loading...
Need help?
General
