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Through combined configuration of the device name (facility), information severity level threshold
(severity), module name (filter) and the file “syslog.conf”, you can sort information precisely for filtering.
Log Output to a Linux Log Host
Network requirements
The switch sends the following log information to the Linux log host whose IP address is 202.38.1.10:
All modules' log information, with severity higher than “errors”.
Network diagram
Figure 1-2 Network diagram for log output to a Linux log host
Configuration procedure
1) Configure the switch:
# Enable the information center.
<Switch> system-view
[Switch] info-center enable
# Configure the host whose IP address is 202.38.1.10 as the log host. Permit all modules to output log
information with severity level higher than error to the log host.
[Switch] info-center loghost 202.38.1.10 facility local7
[Switch] info-center source default channel loghost log level errors debug state off trap
state off
2) Configure the log host:
Step 1: Execute the following commands as a super user (root user).
# mkdir /var/log/Switch
# touch /var/log/Switch/information
Step 2: Edit the file “/etc/syslog.conf” as the super user (root user) to add the following selector/action
pairs.
# Switch configuration messages
local7.info /var/log/Switch/information