User`s guide

Operating the L1 Controller
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For console subchannels, perform the following:
L1> select sub console0
or
L1> select sub console1
and so on.
The output console input: 003c01 console shows that the L1 will send console
input to brick 003c01 and the console subchannel will be used.
To change system console status from one brick to the attached C-brick, use the select
command, followed by the rack and slot number of the attached C-brick, as follows:
003c01-L1> select r 2 s 1
console input: 002c01 console
console output: not filtered.
003c01-L1>
To change the subchannel used on the selected brick, use the select command,
followed by the subchannel number or the word console, as follows:
003c01-L1> select 2
console input: 002c01 CPU C
console output: not filtered.
003c01-L1>
During the boot process on a multi-rack system, there is a window of time during which
both C-bricks are producing output. This resulting output may be somewhat jumbled at
the L1. However, you can filter the console output so that the L1 shows output only from
the brick chosen to receive console input. You can turn filtering on and off with the
select filter command.
If you try to communicate with a brick that is not responding, a time-out condition
results, as follows:
003c01-L1>
entering console mode 002c01 console, <CTRL-T> to escape to L1
no response from 002c01 bedrock console UART:UART_TIMEOUT
When this time-out condition occurs, either the brick is hung or the subchannel is
incorrect.