Configuring the firewall to use Layer 2 interfaces as heartbeat interfaces

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If you want to use a Layer 2 interface as the heartbeat interface, you need to add it to the VLAN, create the VLANIF interface, and configure the IP address of the VLANIF interface. Then use the VLANIF interface as the heartbeat interface and set the remote parameter to specify the heartbeat interface IP address of the peer device.

Other related questions:
Configuring the intranet interface to work in Layer 2 mode on the firewall
Perform as follows to switch a Layer 3 interface to a Layer 2 interface: [USG] interface GigabitEthernet 0/0/1 [USG-GigabitEthernet0/0/1] portswitch //Configure the interface to work in Layer 2 mode. To switch Layer 3 Ethernet interfaces to Layer 2 mode in batches, run the portswitch batch interface-type { interface-number1 [ to interface-number2 ] } &<1-10> command in the system view. By default, a Layer 2 Ethernet interface belongs to VLAN 1 and works as an access port.

How to configure a Layer 2 interface as a Layer 3 interface on a switch
By default, Ethernet interfaces on switches work as Layer 2 interfaces.Run the undo portswitch command to configure the Ethernet interfaces as Layer 3 interfaces. For switches in V200R003C00 and earlier versions: Only Layer 2 Ethernet interfaces on the S5700HI, S5710EI, and S5710HI can be configured as Layer 3 interfaces. After an Ethernet interface is configured as a Layer 3 interface, the interface cannot be configured with an IP address. For switches in V200R005C00 and later versions: Only Layer 2 Ethernet interfaces on the S5700HI, S5710EI, S5710HI, S5700EI, S5720EI, S5720HI, S6700EI, and S6720EI can be configured as Layer 3 interfaces. After an Ethernet interface is configured as a Layer 3 interface, the interface can be configured with an IP address.

Whether the USG firewall supports Layer 3 interfaces to configure Layer 2 VPNs
Don't support .

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