R3204P16-HP Load Balancing Module System Maintenance Configuration Guide-6PW101

Figure 6 Network diagram for outputting log information to a UNIX log host

Configuration procedure

Before the configuration, make sure that there is a route between LB and PC.

1. Configure the device

# Enable information center.

<Sysname> system-view

[Sysname] info-center enable

# Specify the host with IP address 1.2.0.1/16 as the log host, use channel loghost to output log

information (optional, loghost by default), and use local4 as the logging facility.

[Sysname] info-center loghost 1.2.0.1 channel loghost facility local4

# Disable the output of log, trap, and debugging information of all modules on channel loghost.

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

state off

CAUTION:

Because the default system configurations for different channels are different, first disable the output of

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

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 LB under directory /var/log/, and create file info.log under the LB

directory to save logs of LB.

# mkdir /var/log/LB

# touch /var/log/LB/info.log

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

# Device configuration messages

local4.info /var/log/LB/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/LB/info.log.