For duplicated operation by RIP mode, a pair of network interfaces must be connected through at least one router.
If a fault occurs on an inter-system path during duplicated operation by RIP mode, it takes time to modify the path information between routers (about 5 minutes if the router monitoring function is not enabled, or 1 to 5 minutes if the function is enabled). If the TCP connection is reset during this period, reconnect for recovery from the fault.
When setting a router (LR) for duplicated operation by RIP mode, the metric value of the network path must be different for each network.
To configure one virtual network to the redundant transfer route, a new network number is necessary to this virtual network.
Only one NIC interface is connectable on one network. It is not possible to connect more than one interface on the same network.
When more than one server sends RIP, occasionally transferring of the route information becomes complicated and takes longer than expected. Therefore, have only one machine to work in RIP mode on the same network.