Airwall Gateway link monitoring
Airwall Gateways have a utility to monitor its underlay network interfaces and determine if one is available for use.
Internet Control Message Protocol (ICMP) is a prerequisite for link monitoring to validate a link.
By default, an Airwall Gateway will prefer wired underlay interfaces to cellular or Wi-Fi.
2.1.x and later
Starting in v2.1.x, the Airwall Gateway has a link monitor that is fully configurable, allowing the following tunable options:
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Custom ping destinations (Conductor enabled by default)
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Ping rate (frequency), timeout, time to live (TTL), and failure count
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Disable ping monitors on active link