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Idle Check Interval: The amount of time between each check. (Default: 30 seconds. Range: 10-3600 seconds.)
Monitor while connected: (Default: Off) Select from the following dropdown options:
Passive DNS (modem only): The router will take no action until data is detected that is destined for the WAN. When this data is detected, the data will be sent and
the router will check for received data for 2 seconds. If no data is received the router behaves as described below under Active DNS.
Active DNS (modem only): A DNS request will be sent to the DNS servers. If no data is received, the DNS request will be retried 4 times at 5-second intervals. (The
first 2 requests will be directed at the Primary DNS server and the second 2 requests will be directed at the Secondary DNS server.) If still no data is received, the
device will be disconnected and failover will occur.
Active Ping: A ping request will be sent to the Ping Target. If no data is received, the ping request will be retried 4 times at 5-second intervals. If still no data is
received, the device will be disconnected and failover will occur. When "Active Ping" is selected, the next line gives an estimate of data usage in this form: "Active
Ping could use as much as 9.3 MB of data per month." This amount depends on the Idle Check Interval.
Off: Once the link is established the router takes no action to verify that it is still up.
Ping IP Address: If you selected "Active Ping", you will need to input an IP address. This must be an address that can be reached through your WAN connection
(modem/Ethernet). Some ISPs/Carriers block certain addresses, so choose an address that all of your WAN connections can use. For best results, select an established public
IP address. For example, you might ping Google Public DNS at 8.8.8.8 or Level 3 Communications at 4.2.2.2.
IPv6 Failure Check (Advanced)
The settings for IPv6 Failure Check match those for IPv4 Failure Check except that the IP address for Active Ping is an IPv6 address.
Failback Configuration (Advanced)
This is used to configure failback, which is the ability to go back to a higher priority WAN interface if it regains connection to its network.
Select the Failback Mode from the following options:
Usage
Time
Disabled
10/13/2014
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