Users Guide

92 Serial Port Console Redirection

NOTE: For this combined functionality, Serial Communication baud rate and the SOL baud rate must be set to the

same value.

When in terminal mode, to switch the connection to the system COM2 port use:

When connected to the system COM2 port, to go back to the terminal mode use:

SPCR Table

The Serial Port Console Redirection (SPCR) table provides information about how the system firmware

and service processor use the out-of-band (OOB) management port. For example, if the OOB

Management port is a serial port, the SPCR table contains information such as serial port number, baud

terminal type, and other settings used for OOB communication. The SPCR table is read by the Special

Administrative Console (SAC) for console redirection and configures itself automatically during a

bootable CD installation.

The SPCR table is automatically enabled if the system service processor supports Emergency

Management Services (EMS) such as console redirection. If it is not configured automatically, you must

configure SPCR to match BMC settings by adding the following parameters to the unattend.txt file.

NOTE: The unattend.txt file is automatically created after installation.

[Data]

EMSPort

EMSBaudrate

Where,

EMSPort = Port used for serial communication. For example, COM1 or COM2.

EMSBaudrate = Configured baud rate for communication. The minimum supported baud rates for

supported Dell™ PowerEdge™ systems is 19200.

Serial Console redirection With SOL Proxy

Configuring Linux for Serial Redirection During Boot

The "SysRq key" is a key sequence that allows basic commands to be passed directly to the kernel for

debugging. Under some circumstances, it can also be used to reboot remote managed systems. The serial

console uses the RS-232 break function as the SysRq key. A "break" is a period of no transmission on the

serial line. To configure the "Sysrq" key in systems running Linux, follow the instructions given below:

NOTE: The following instructions are specific to the Linux GRand Unified Bootloader (GRUB). Similar changes

would be necessary for using a different boot loader.