(1) Support for tagged VLAN interfaces
If tagged VLAN interfaces (e.g. eth0.2 and eth1.5) are generated through the Ethernet driver with IEEE 802.1Q tagged VLAN, they can be made redundant and used with the redundant line control function.
Before modification
The tagged VLAN interfaces cannot be made redundant and used with the redundant line control function.
After modification
The tagged VLAN interfaces can be made redundant and used with the redundant line control function.