H3C Technologies H3C S5120 Series Switches User Manual

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[Sysname] info-center source default channel loghost debug state off log state off trap state

off

As the default system configurations for different channels are different, you need to disable the output

of log, trap, and debugging information of all modules on the specified channel (loghost in this example)

first and then configure the output rule as needed so that unnecessary information will not be output.

# Configure the information output rule: allow log information of ARP and IP modules with severity equal

to or higher than informational to be output to the log host. (Note that the source modules allowed to

output information depend on the device model.)

[Sysname] info-center source arp channel loghost log level informational state on

[Sysname] info-center source ip channel loghost log level informational state on

2) Configure the log host

The following configurations were performed on SunOS 4.0 which has similar configurations to the Unix

operating systems implemented by other vendors.

Step 1: Log in to the log host as a root user.

Step 2: Create a subdirectory named Device under directory /var/log/, and create file info.log under

the Device directory to save logs of Device.

# mkdir /var/log/Device

# touch /var/log/Device/info.log

Step 3: Edit file /etc/syslog.conf and add the following contents.

# Device configuration messages

local4.info /var/log/Device/info.log

In the above configuration, local4 is the name of the logging facility used by the log host to receive logs.

info is the information level. The Unix system will record the log information with severity level equal to

or higher than informational to file /var/log/Device/info.log.

Be aware of the following issues while editing file /etc/syslog.conf:

Comments must be on a separate line and begin with the # sign.

No redundant spaces are allowed after the file name.

The logging facility name and the information level specified in the /etc/syslog.conf file must be

identical to those configured on the device using the info-center loghost and info-center source

commands; otherwise the log information may not be output properly to the log host.

Step 4: After log file info.log is created and file /etc/syslog.conf is modified, you need to issue the

following commands to display the process ID of syslogd, kill the syslogd process and then restart

syslogd using the –r option to make the modified configuration take effect.