
10-4
For example, in the output rule, if you configure to output information with severity level being
informational, the information with severity level being emergency through informational will be output.
Table 10-1 Severity description
Severity Severity value Description
Emergency 0 The system is unusable.
Alert 1 Action must be taken immediately
Critical 2 Critical conditions
Error 3 Error conditions
Warning 4 Warning conditions
Notice 5 Normal but significant condition
Informational 6 Informational messages
Debug 7 Debug-level messages
Eight Output Destinations and Ten Channels of System Information
The system supports eight information output destinations, including the console, monitor terminal
(monitor), log buffer, log host, trap buffer, SNMP module, Web interface (syslog) and log file. The
specific destinations supported vary with ACs.
The system supports ten channels. The eight channels 0 through 6, and channel 9 are configured with
channel names, output rules, and are associated with output destinations by default. The channel
names, output rules and the associations between the channels and output destinations can be
changed through commands. Besides, you can configure channels 7, and 8 without changing the
default configuration of the eight channels.
Table 10-2 Information channels and output destinations
Information
channel number
Default channel
name
Default output
destination
Description
0 console Console Receives log, trap and debugging information.
1 monitor Monitor terminal
Receives log, trap and debugging information,
facilitating remote maintenance.
2 loghost Log host
Receives log, trap and debugging information
and information will be stored in files for future
retrieval.
3 trapbuffer Trap buffer
Receives trap information, a buffer inside the
router for recording information.
4 logbuffer Log buffer
Receives log and debugging information, a
buffer inside the router for recording information.
5 snmpagent SNMP module Receives trap information.
6 channel6 Web interface Receives log information.
7 channel7 Not specified Receives log, trap, and debugging information.
8 channel8 Not specified Receives log, trap, and debugging information.
9 channel9 Log file Receives log, trap, and debugging information.
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