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All devices use the LTE interface when there is a WAN outage. The scenarios vary from a link down state on the WAN interface to all/some L2/L3 traffic is dropped upstream in the network.
Some devices are allowed to use the LTE interface and some are excluded when the WAN link goes down.
Some devices may be considered 'essential' and they must always have connectivity.
Other devices are not considered 'essential' and the loss of connectivity does not have adverse affects.
Some devices always use the LTE interface.
There could be circumstances where a device would need uninterrupted connectivity.
The other devices can withstand short interruptions in connectivity.
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With OpenSync 3.4, support for LTE Primary or LTE Only is not available, but is planned for future releases. |
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Init is the procedure that occurs when the device loses the wired uplink. These steps are triggered:
OVSDB registration
LTE interface bringup
DHCP for LTE
Route table creation for forwarding over LTE
Reenabling the Wired Uplink – Failover
Failover is the procedure that occurs when the device regains access via the wired uplink. These steps are triggered:
OVSDB notification
Client route updates
NAT (V4 only)
Switching back to WAN
Northbound API
OVSDB Schema: Lte_Config Table
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