Cradlepoint COR IBR350 Manual page 81

• 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
Usage: Fail back based on the amount of data passed over time. This is a good setting for when you have a dual-mode EVDO/WiMAX modem
and you are going in and out of WiMAX coverage. If the router has failed over to EVDO it will wait until you have low data usage before bringing
down the EVDO connection to check if a WiMAX connection can be made.
• High (Rate: 80 KB/s. Time Period: 30 seconds.)
• Normal (Rate: 20 KB/s. Time Period: 90 seconds.)
Figure 105: IPv6 Failure Check Settings
Figure 106: Failback Configuration
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