Double outlet of AR routers support for walking under different lines?

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Double outlet of AR router does not support on walking under different lines.
The reason is: uplink data can control but the carrier over data cannot be controlled.

Other related questions:
Whether the AR router supports 3G and 4G do double outlet
Some low-end models are not supported, there are two USB interface or a USB with a SIM slot device on the panel support 3G and 4G dual uplink; In addition to the equipment type with a HSPA+7 or C models with built-in 3G support.

Does an AR router support the simultaneous use of a 3G outlet and a 4G outlet
Some low-end models do not support the simultaneous use of a 3G outlet and a 4G outlet. Models with a USB interface and a SIM card slot on the device panel support the simultaneous use of a 3G uplink outlet and a 4G uplink outlet. In addition, models with HSPA+7 or C in their names support built-in 3G outlets.

Double outlet of AR routers active/standby backup, the external network is unable to access device interface address of the standby link.
Because do double outlet is the active/standby,When ping standby link interface address ,AR routers to extranet address returned packet is through the main link out of; as a result, the source and destination addresses were inconsistent, so ping doesn't make any sense.

Example of configuring VRRP active/standby backup on an AR router
The roadmap of configuring VRRP active/standby backup on an AR router to implement gateway redundancy is as follows: 1. Configure IP addresses and routing protocols for different device interfaces to enable network-layer connection among different devices. 2. Configure a VRRP group on Router A and Router B, respectively. Configure a high priority and set preemption delay to 20s on Router A and configure Router A as a master device to bear and forward traffic. Configure a low priority and configure Router B as a backup device to implement gateway redundancy. Configure a VRRP group. # Create VRRP 1 on Router A, set its priority to 120, and set the preemption delay to 20s. [RouterA] interface gigabitethernet 2/0/0 [RouterA-GigabitEthernet2/0/0] vrrp vrid 1 virtual-ip 10.1.1.111 //Configure a virtual IP address. [RouterA-GigabitEthernet2/0/0] vrrp vrid 1 priority 120 //Set priority to 120. [RouterA-GigabitEthernet2/0/0] vrrp vrid 1 preempt-mode timer delay 20 //Set the preemption delay to 20s. [RouterA-GigabitEthernet2/0/0] quit # Create VRRP 1 on Router B, and set its priority to a default value 100. [RouterB] interface gigabitethernet 2/0/0 [RouterB-GigabitEthernet2/0/0] vrrp vrid 1 virtual-ip 10.1.1.111 [RouterB-GigabitEthernet2/0/0] quit For details about the configuration, see the URL: Example for Configuring a VRRP Group in Active/Standby Mode.

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