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ECA-5540 User Manual
BMC Firmware Functional Description
System health monitoring
The BMC implements system sensor monitoring feature. It could monitor voltage, temperature, and current
of critical components.
System Power Management
The BMC implements chassis power and resets functions for system administrators to control and manage
the system power behavior. These functions can be activated by sending the IPMI 2.0 compatible chassis
commands to the BMC over messaging interfaces. The following list summaries the supported functions.
Chassis power on
•
Chassis power off
•
Chassis power cycle
•
Chassis power reset
•
Chassis power soft off
•
Server's power status report
•
Watchdog Timer
The BMC provides an IPMI 2.0 compatible watchdog timer which can prevent the system from system
hanging.
Fan Speed Control
BMC oversees fan speed control. The fan speed can be modified by varying the duty cycle of PWM signal.
The fan speed control algorithm mainly refers to the readings of on-board temperature sensors.
System Event Log (SEL)
A non-volatile storage space is allocated to store system events for system status tracking.
Serial over LAN (SOL)
IPMI 2.0 SOL is implemented to redirect the system serial controller traffic over an IPMI session. System
administrators can establish a SOL connection with a standard IPMI client, like IPMITOOL, to remotely
interact with serial text-based interfaces such as OS command-line and serial redirected BIOS interfaces.
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