Silicon Graphics Origin 3900 User Manual page 166

8: System Control
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• Subchannel 3A specifies Node 3, CPU A.
• Subchannel 3B specifies Node 3, CPU B.
• Subchannel 3C specifies Node 3, CPU C.
• Subchannel 3D specifies Node 3, CPU D.
• Node 0 console subchannel.
• Node 1 console subchannel.
• Node 2 console subchannel.
• Node 3 console subchannel.
The output console input: 001c07 console0 shows that the L2 controller will
send console input to brick 001c07 and the console0 subchannel will be used.
To change the brick that will be the system console, use the select <rack>.<slot>
command, where <rack> is the rack and <slot> is the slot where the brick is located:
L2> select 3.7
console input: 003c07 console
console output: no filtered
console detection: L2 detected
To change the subchannel used on the selected brick to be the system console, use the
select subchannel <0A|0B|0C|0D|1A|1B|1C|1D|2A|2B|2C|2D|
3A|3B|3C|3D> command. (Use the select subchannel console to select the
current console as the subchannel of the brick to be the system console.) For example, to
select the subchannel that corresponds to CPU A of node 1, enter the following:
L2> select subchannel 1A
console input: 003c07 console CPU1A
console output: no filtered
Note: See the bulleted list in "Console Selection" on page 114 for valid subchannels.
During the boot process on a multibrick system, there is a window of time in which all
Cx-bricks are producing output. This can result in a somewhat jumbled output at the L2
controller. However, you can filter console output so that the L2 controller shows output
from only the brick chosen to receive console input. You can turn on and off filtering with
the select filter on and select filter off commands.
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