3Com 5500-EI PWR Install Manual page 925

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<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
Note the following items when you edit file "/etc/syslog.conf".
A note must start in a new line, starting with a "#" sign.
In each pair, a tab should be used as a separator instead of a space.
No space is permitted at the end of the file name.
The device name (facility) and received log information severity specified in file "/etc/syslog.conf"
must be the same with those corresponding parameters configured in commands info-center
loghost and info-center source. Otherwise, log information may not be output to the log host
normally.
Step 3: After the log file "information" is created and the file "/etc/syslog.conf" is modified, execute the
following commands to view the process ID of the system daemon "syslogd", stop the process, and then
restart the daemon "syslogd" in the background with the "-r" option.
# ps -ae | grep syslogd
147
# kill -9 147
# syslogd -r &
In case of Linux log host, the daemon "syslogd" must be started with the "-r" option.
After all the above operations, the switch can record information in the corresponding log file.
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.
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