
Using Technician Interface Software
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Overview
The operating software in each processor module logs (stores) events in a first-in,
first-out (FIFO) memory buffer.
When you issue a command to display or save the current log, the system sorts the
events from all processor modules in chronological order. You can also clear
events from all slots or from a single slot.
The event logs are checksum protected during a warm start. (Issuing the
boot or
reset command or pressing the Reset button warm-starts the router.) However,
events are lost during a cold start. (Power-cycling the router or issuing the
diags
command cold-starts the router.) When you remove and reinsert a processor
module, the events clear from that module only.
Logging and Displaying Event Messages
Use the log command mainly to specify the types of events that you want the
router to include in the events log, exclude from the events log, or display from the
events log, as follows:
• To display the unfiltered contents of the events log, enter the
log command
without any command arguments.
• To select the types of messages you want the router to include in, or exclude
from, the events log, add write filter arguments to the
log command. You can
select or specify event types by
-- Entity code
-- Message severity levels
-- Router slot numbers
• To display all write filters currently in effect, enter the
log command with the
-z subcommand option.
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