Technical data

Using Technician Interface Software
6-2
303561-A Rev 00
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. (Cycling power on 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 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.