Set the
VPN Failover Metric if DIA AnyPath is enabled a
hub or branch firewall, to prioritize the order in which a particular hub is
selected for failover.
The lower the metric, the higher the priority of the interface to be selected
during failover. If multiple hub virtual interfaces have the same metric
value, SD-WAN sends new session traffic to them in
round-robin fashion.
Select the
Path Monitoring mode.
Aggressive—Firewall sends probe packets to the
opposite end of the SD-WAN link at a constant
frequency. Use this mode if you need fast detection and failover for
brownout and blackout conditions. Default for all link types except
LTE and Satellite.
Relaxed—Firewall waits for a number of seconds
(Probe Idle Time) between sending sets of
probe packets, making path monitoring less frequent. When the probe
idle time expires, firewall sends probes for 7 seconds at the
Probe Frequency configured. Use this mode
when you have low-bandwidth links, links that charge by usage (such
as LTE), or when fast detection isn’t as important as preserving
cost and bandwidth. Default for LTE and Satellite link types.
Set the
Probe Frequency (per second) to specify the
number of times per second the firewall sends a probe packet to the opposite end
of the
SD-WAN link. The default setting provides subsecond
detection of brownout and blackout conditions.
Set the
Probe Idle Time (seconds) to specify how long
the firewall waits between sets of probe packets.
Set the
Failback Hold Time (seconds) to specify how long
the firewall waits for a recovered link to remain qualified before the firewall
reinstates the link after it has failed.
Save.