Network Redundancy

You can use the dual NIC (or multiple network interface) capabilities of each client or server, enabling you to specify a complete and unique network connection from a client to a server.

Consider the following diagram:

The above example shows two levels of redundancy:

• network redundancy

• server redundancy

Network Redundancy

Note: Currently Plant SCADA does not support dynamic port binding.

Each of the system components in the cluster are connected to two networks (LAN 1 and LAN 2). This is achieved by using the dual end points of each server. This provides LAN redundancy as follows:

• If LAN 1 is suddenly inoperative, each component in the cluster can easily maintain connection by using LAN 2.

• In turn, if LAN 2 becomes inoperative, LAN 1 remains in operation.

  Note: For this type of redundancy to work, each system component needs to have two NICs to support two parallel LANs. On every computer, each NIC needs to use a separate IP network or subnet.

Server Redundancy

For information about server redundancy, see Reports and Trends Server Redundancy and Alarm Server Redundancy.

See Also

Configuring Network Redundancy