Asus ASMB4-SOL PLUS User Manual download pdf (Page 4)

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3. Change the file permissions using the following command:

chmod 664 /dev/ipmi0

4. Check the group ID of the new group using the following command:

cat /etc/group | grep groupname

5. Replace the group ID of the ordinary user in /etc/passwd with this

number.

Enabling and using Serial Over LAN

The SOL protocol can transmit serial data over a LAN using IPMI Over LAN

packets. It works by establishing an IPMI Over LAN session between the BMC

and the remote management applications; once the session is established,

the remote console can request that SOL be activated. The BMC can then

assemble the serial packets and send them to the remote console over the

LAN. IPMI 1.5 required the separate SOL Proxy daemon to enable console

redirection. However, in IPMI 2.0, the lanplus interface uses RMCP+ to con-

nect to the BMC, the terminal is set to raw mode, and user input is sent to

the serial console on the remote server. IPMItool itself can act as a serial

console without requiring an additional proxy service. On exit, the SOL pay-

load mode is deactivated, returning the terminal to its original settings.

Enabling SOL functionality

Administrators can enable SOL functionality in the BIOS utility by first

rebooting the server and pressing F2 to launch the utility. In the Serial

Communication options, they should then set the Serial Communication

setting to On with Console Redirection via COM2, the External Serial

Connector setting to Remote Access Device, the Failsafe Baud Rate setting

to any suitable value (the BIOS attempts to determine this value automati-

cally, and uses this baud rate only if that attempt fails), the Remote

Terminal Type setting to VT100/VT220, and the Redirection After Boot

setting to Enabled (see Figure 4).

Using SOL

Administrators can activate a SOL session using the following

command:

ipmitool –I lanplus –H ipaddress -U username

-P password sol activate

This command should produce the following output:

[SOL Session operational. Use ~? for help]

This message indicates that the SOL session is active, and that there

is currently no console redirection activity. Only one SOL session can be

active at a time. Administrators can use various escape sequences within

a SOL session, as shown in Figure 5.

The escape sequence ~+. terminates the session and resets the ter-

minal settings. However, if SOL mode exits unintentionally and the BMC

Figure 4. Serial Communication options in the Dell BIOS utility

Figure 5. SOL session escape sequences

Keyboard mapping for console

redirection or session task

Escape sequence

Terminate connection ~+.

Suspend IPMItool ~+^+Z

Send break ~+B

Print escape sequence help ~+?

F1 Esc+1

F2 Esc+2

F3 Esc+3

F9 Esc+9

F10 Esc+0

F11 Esc+!

F12 Esc+@

Home Esc+h

End Esc+k

Insert Esc++

Delete Esc+-

Page Up Esc+?

Page Down Esc+/

Ctrl+M Esc+Ctrl+M

Ctrl+H Esc+Ctrl+H

Ctrl+I Esc+Ctrl+I

Ctrl+J Esc+Ctrl+J

Alt+

(where

is any letter) Esc+

(where

is any letter, and

is the uppercase of that letter)

Ctrl+Alt+Del Esc+R+Esc+r+Esc+R

Note:

In these sequences, + denotes combinations of keys and is not a part of the sequence. For

example, Ctrl+M denotes combining the Ctrl and M keys.

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Asus ASMB4-SOL PLUS User Manual Page 4

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