Redundant Line Control function must be operating on each system that performs duplicated operation by Fast switching mode.
In Fast switching mode, one virtual network is configured to the redundant transfer route. Therefore, a new network number or a subnetwork number to this virtual network is necessary.
Only one NIC interface is connectable on one network. It is not possible to connect more than one interface on the same network.
Any combination is possible for redundant NICs. When combined those of different transfer abilities, the communication ability is suppressed by the one of less transfer ability. Therefore, it is recommended to combine the same kind of NICs and to make them redundant.
In Fast switching mode, a dedicated Ethernet frame is used. Therefore, when operating VLAN (Virtual LAN), occasionally it is not possible to communicate depending on the setting of VLAN. In such a case, either to stop using VLAN or to change the setting of VLAN so that it becomes possible to use an optional Ethernet frame.
