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# Disable the function of outputting information to log host channels, because all modules output log
information to the log host channels by default.
[Switch] undo info-center source default channel loghost
# Configure the host whose IP address is 202.38.1.10 as the log host. Permit ARP and IP modules to
output information with severity level higher than informational to the log host.
[Switch] info-center loghost 202.38.1.10 facility local4
[Switch] info-center source arp channel loghost log level informational debug state off trap
state off
[Switch] info-center source ip channel loghost log level informational debug state off trap
state off
2) Configure the log host:
The operations here are performed on SunOS 4.0. The operations on other manufacturers' Unix
operation systems are similar.
Step 1: Execute the following commands as the 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
local4.info /var/log/Switch/information
When you edit the file “/etc/syslog.conf”, note that:
z A note must start in a new line, starting with a “#” sign.
z In each pair, a tab should be used as a separator instead of a space.
z No space is allowed at the end of a file name.
z The device name (facility) and received log information severity level specified in the file
“/etc/syslog.conf” must be the same as those corresponding parameters configured in the
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 command to send a HUP signal to the system daemon “syslogd”, so that it can reread its
configuration file “/etc/syslog.conf”.
# ps -ae | grep syslogd
147
# kill -HUP 147
After all the above operations, the switch can make records in the corresponding log file.
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