Create a Network Policy with Router Settings.
Configure one or two WAN tracking destination IP addresses in a network policy so
routers can check WAN availability by sending probe packets to these destination
IPs.
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Enter a different
Primary IP Target or accept the default.
The default primary IPv4 target is 8.8.8.8, which is the Google Public DNS, a
free domain name system (DNS). This DNS is available from anywhere in the
world.
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Enter an optional Secondary IP Target.
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Specify the Number of Retries before the router marks
the link as unavailable.
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For the Measurement Interval, enter the number of
seconds between retries.
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Select Reset to Default to return these settings to the
factory defaults.
Continue configuring the network policy.
