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4. Test rules – watchdog function.
Basically, you can define up to three test rules, two with numerical IP address
of evaluated host, third rule can be defined using host name, and it’s IP
address will be resolved via DNS. Each rule is sending periodically ICMP test
packets to the host and when number of received ICMP replies is lower than
allowed packet loss, rule will generate request for output control event, which
can lead to restart of the output socket, sending of SNMP trap or both,
depending on configuration. Finally, output control event is performed using
logical OR or logical AND operations over the results (output control event
requests) of particular rules.
Defining rules
Each rule can be enabled or disabled by checking the checkbox. Enter IP
address
(Rule 1, Rule 2)
or host name in case of the
Rule 3,
then size of ICMP
frames, maximum allowed
packet loss
in % and
Packet timeout
interval, time
