Deep Edge checks whether a WAN works by pinging the
corresponding monitor IP address or host name from each egress interface. If the
monitoring
hosts are unreachable, any static routes or policy-based routes associated with the
interface are
disabled. If the traffic matches another route, the traffic routes to other static
routes or
policy-based routes. If the traffic does not match another route, it is routed via
the default
gateway or discarded.
