Cradlepoint COR IBR350 Manual page 80

General Settings
Device Settings
• Enabled: Select/deselect to enable/disable.
• Force NAT: Normally NAT is part of the Routing Mode setting which is selected on the LAN side in Network Settings > WiFi / Local
Networks. Select this option to force NAT whenever this WAN device is being used.
• Priority: This number controls failover and failback order. The lower the number, the higher the priority and the more use the device will get.
This number will change when you move devices around with the priority arrows in the WAN Interfaces list.
• Load Balance: Select to allow this device to be available for the Load Balance pool.
• Download bandwidth: Defines the default download bandwidth for use in Load Balance and QoS (quality of service, or traffic shaping)
algorithms. (Range: 128 Kb/s to 1 Gb/s.)
• Upload bandwidth: Defines the default upload bandwidth for use in Load Balance and QoS (quality of service, or traffic shaping) algorithms.
(Range: 128 Kb/s to 1 Gb/s.)
• MTU: Maximum transmission unit. This is the size of the largest protocol data unit that the device can pass. (Range: 46 to 1500 Bytes.)
• Hostname (This only shows for certain devices.)
IPv4 Failure Check (Advanced) If this is enabled, the router will check that the highest priority active WAN interface can get to the Internet even
if the WAN connection is not actively being used. If the interface goes down, the router will switch to the next highest priority interface available. If
this is not selected, the router will still failover to the next highest priority interface but only after the user has attempted to get out to the Internet
and failed.
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.
Figure 104: IPv4 Failure Check Settings
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