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

As shown in Figure 1-2, 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”.

Figure 1-2Network diagram for log output to a Linux log host

Internet

Switch

PC

Configuration procedure

1)Configure 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

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3Com WX3000 operation manual Log Output to a Linux Log Host, 2Network diagram for log output to a Linux log host