American Megatrends MegaRAC M300V, User Manual

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Chapter Seven : Serial over LAN Support
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Chapter 7 Serial over LAN Support
Serial over LAN Support
Serial over LAN (SoL) is the ability to redirect a local text console over the management LAN to a
remote viewing/control station. Text-based BIOS setup screens and operating system control
consoles can be redirected using this method. SoL is a replacement technology for the legacy
serial concentrators and can lead to lower installation and maintenance costs due to reduced
cabling and the elimination of serial concentrators from the management infrastructure.
For the MegaRAC M300V card’s SoL and Serial Port Routing Logic to work correctly, the Host
system must implement one MUX logic (X5 for the UART control signals) and one De-MUX (X4
for UART TXD and RXD signal) for the motherboard’s serial port.
The X4 De-MUX is controlled by MCARD_DETECT_L signal from the OPMA connector.
The MUX X5 is controlled by MCARD_AUX_SoL_CTRL_L signal from the OPMA connector.