10. SERIAL OVER LAN FUNCTION
Serial over LAN provides a mechanism that enables the serial controller of a managed system to
be redirected over an IPMI session over IP. This enables remote console applications to provide
access to text-based interfaces for BIOS, utilities, operating systems, and applications while
simultaneously providing access to IPMI platform management functions. SOL is implemented as a
payload type under the new payload capability in RMCP+. This can be used to enable asynchronous
serial-based OS and pre-OS communication over a connection to the BMC.
SOL is implemented as a payload type under the IPMI v2.0 “RMCP+” protocol.
Following is SOL- related information:
Item Description
Channel# 01H, 08H (LAN channel)
Bit Rate
9600,19200,38400,57600,115200bps is
supported
Flow control Hardware flow control
Payload port 26FH
SOL Configuration Parameters (Default value)
Parameter No. Data Description
Set In Progress 0 0x00 Set complete
SOL Enable 1 0x01 Enable SOL
SOL Authentication 2 0x04
Encryption controlled by remote console
Authentication controlled by remote software
Privilege Level: ADMINISTRATOR
Character Accumulate
Interval & Character
Send Threshold
3 0x04 0x40
Character Accumulate Interval: 20ms
Character Send Threshold: 64
SOL Retry 4 0x07 0x32
Retry Count: 7
Retry Interval: 500ms
SOL non-volatile bit rate 5 0x0A non-volatile bit rate: 115200 bps
SOL volatile bit rate 6 0x0A volatile bit rate: 115200 bps
SOL Payload Channel 7 0x01 SOL Payload Channel Number: 1
SOL Payload Port Number 8 0x6f 0x02 SOL Payload Port Number: 623
SOL Timeout 192 0x01 0x00 SOL inactivity timeout: 1min
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