Dell PowerEdge R840 EMC Installation and Service Manual - Page 35

Serial Communication

Page 35 highlights

Table 6. Slot Bifurcation (continued) Option Description x4 Bifurcation, or x4, x4, x8 Bifurcation, or x8, x4, x4 Bifurcation Serial Communication Use the Serial Communication screen to view the properties of the serial communication port. Viewing Serial Communication To view the Serial Communication screen, perform the following steps: Steps 1. Power on or restart the system. 2. Press F2 immediately after you see the following message: F2 = System Setup NOTE: If your operating system begins to load before you press F2, wait for the system to finish booting, and then restart your system and try again. 3. On the System Setup Main Menu screen, click System BIOS. 4. On the System BIOS screen, click Serial Communication. Serial Communication details About this task The Serial Communication screen details are explained as follows: Option Description Serial Communication Selects serial communication devices (Serial Device 1 and Serial Device 2) in BIOS. BIOS console redirection can also be enabled, and the port address can be specified. This option is set to Auto by default. Enables the COM port or Console Redirection options. This option is set to Off by default. Serial Port Address Enables you to set the port address for serial devices. This field sets the serial port address to either COM1 or COM2 (COM1=0x3F8, COM2=0x2F8). This option is set to Serial Device 2=COM1 by default. NOTE: You can use only Serial Device 2 for the Serial Over LAN (SOL) feature. To use console redirection by SOL, configure the same port address for console redirection and the serial device. External Serial Connector Enables you to associate the External Serial Connector to Serial Device 1, Serial Device 2, or the Remote Access Device by using this option. This option is set to Serial Device 1 by default. NOTE: Only Serial Device 2 can be used for Serial Over LAN (SOL). To use console redirection by SOL, configure the same port address for console redirection and the serial device. NOTE: Every time the system boots, the BIOS syncs the serial MUX setting saved in iDRAC. The serial MUX setting can independently be changed in iDRAC. Loading the BIOS default settings from within the BIOS setup utility may not always revert this setting to the default setting of Serial Device 1. Enables you to associate the External Serial Connector to Serial Device 1. Failsafe Baud Rate Specifies the failsafe baud rate for console redirection. The BIOS attempts to determine the baud rate automatically. This failsafe baud rate is used only if the attempt fails, and the value must not be changed. This option is set to 115200 by default. Pre-operating system management applications 35

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Table 6. Slot Bifurcation (continued)
Option
Description
x4 Bifurcation, or
x4, x4, x8 Bifurcation, or
x8, x4, x4 Bifurcation
Serial Communication
Use the
Serial Communication
screen to view the properties of the serial communication port.
Viewing Serial Communication
To view the
Serial Communication
screen, perform the following steps:
Steps
1.
Power on or restart the system.
2.
Press F2 immediately after you see the following message:
F2 = System Setup
NOTE:
If your operating system begins to load before you press F2, wait for the system to finish booting, and then
restart your system and try again.
3.
On the
System Setup Main Menu
screen, click
System BIOS
.
4.
On the
System BIOS
screen, click
Serial Communication
.
Serial Communication details
About this task
The
Serial Communication
screen details are explained as follows:
Option
Description
Serial
Communication
Selects serial communication devices (Serial Device 1 and Serial Device 2) in BIOS. BIOS console redirection can
also be enabled, and the port address can be specified. This option is set to
Auto
by default.
Enables the
COM
port or
Console Redirection
options. This option is set to
Off
by default.
Serial Port
Address
Enables you to set the port address for serial devices. This field sets the serial port address to either COM1 or
COM2 (COM1=0x3F8, COM2=0x2F8). This option is set to
Serial Device 2=COM1
by default.
NOTE:
You can use only Serial Device 2 for the Serial Over LAN (SOL) feature. To use console
redirection by SOL, configure the same port address for console redirection and the serial device.
External Serial
Connector
Enables you to associate the External Serial Connector to
Serial Device 1
,
Serial Device 2
, or the
Remote
Access Device
by using this option. This option is set to
Serial Device 1
by default.
NOTE:
Only Serial Device 2 can be used for Serial Over LAN (SOL). To use console redirection by
SOL, configure the same port address for console redirection and the serial device.
NOTE:
Every time the system boots, the BIOS syncs the serial MUX setting saved in iDRAC. The
serial MUX setting can independently be changed in iDRAC. Loading the BIOS default settings
from within the BIOS setup utility may not always revert this setting to the default setting of
Serial Device 1.
Enables you to associate the External Serial Connector to Serial Device 1.
Failsafe Baud Rate
Specifies the failsafe baud rate for console redirection. The BIOS attempts to determine the baud rate
automatically. This failsafe baud rate is used only if the attempt fails, and the value must not be changed. This
option is set to
115200
by default.
Pre-operating system management applications
35