This feature allows you to automate the process of LTE SIM switching in case of primary LTE connection failure. You can configure the Edge to automatically detect the primary LTE link failure and thereby initiate the process of establishing the secondary LTE link. When the Automatic Switchover feature is activated, and for some reason, the secondary LTE link is also down, the Edge tries to establish the connection with the primary link again. This process continues until the Edge detects an active LTE link. Also, if automatic switchover is in progress, manual switchover cannot be performed on the Edge.
Prerequisites
You must insert SIM cards in both the SIM slots on the Edge.
This feature can be activated only on a standalone Edge where High Availability is deactivated. An error is displayed on the Orchestrator if you try to activate both, High Availability and Automatic Switchover features.
Navigate to Configure > Edges > Device tab > Interface Settings, and make sure that the IP Type, L2 Settings, and WAN Overlay settings are same for both Cell1 and Cell2. Other parameters like SIM PIN, Network, and APN need not be same.
Both Cell1 and Cell2 interfaces must be activated before activating the Automatic Switchover feature. For more information, see Configure Interface Settings for Edges.
To access this feature, follow the below steps:
In the SD-WAN Service of the Enterprise portal, click Configure > Edges. The Edges page displays the existing Edges.
Click the link to an Edge or click the View link in the Device column of the Edge. The configuration options for the selected Edge are displayed in the Device tab.
In the Connectivity category, expand Automatic Switchover. The following screen appears:
You can configure the following settings, and then click Save Changes:
Option
Description
Automatic Switchover
Select the Enabled check box to activate this feature.
Switchover Time
Select the time after which the Edge must switchover to the secondary LTE link. The Edge detects the connection failure and waits till the specified Switchover Time to initiate the switchover process. This helps in avoiding any unnecessary switchovers happening due to link flaps. Once initiated, the switchover happens in 4 to 5 minutes.
The available values are 30, 60, and 90 seconds. By default, 60 is selected.
To monitor the Edge Switchover status, go to
Monitor > Edges, and then click the link to your Edge. The
Overview tab is displayed by default.
The Auto Dual-Mode SIM column displays the status of the Edge with respect to the Automatic Switchover feature configured on that Edge, and is applicable only for a 610-LTE. See the table below for the color code details:
Color
Status
Green
Indicates that the Secondary SIM is inserted and the Automatic Switchover feature is activated.
Amber / Orange
Indicates that the Secondary SIM is inserted and the Automatic Switchover feature is deactivated.
Purple
Indicates that the Secondary SIM is not inserted and the Automatic Switchover feature is activated.
Red
Indicates that the Secondary SIM is not inserted and the Automatic Switchover feature is deactivated.
The Signal column displays the signal strength of the Edge. This is indicated by the number of bars, which vary depending on the signal strength. Below are the details:
The Switchover status can also be viewed on the
Monitor > Events page. The following two events are displayed on the screen when the
Automatic Switchover feature is activated.
Event
Description
EDGE_AUTO_SIM_SWITCH
This event is triggered in the following scenarios when the Automatic Switchover feature is activated or deactivated:
The Automatic Switchover feature fails to get activated after the Orchestrator sends the configuration to the Edge.
During the switchover process, when there is at least one active WAN link on the Edge.
EDGE_CELL_SWITCHOVER
This event is triggered after the cell switchover process, irrespective of whether the process was successful or not.
