Firewall bridge server failover configuration

A basic firewall bridge server failover architecture comprises all the components from the basic architecture together with an additional Server Access Bridge server and Client Access Bridge server. If an initial connection to the ObjectServer fails, the probe attempts to connect to the ObjectServer using a backup Server Access Bridge server and Client Access Bridge server.

The following figure illustrates a basic firewall bridge server failover configuration:

In the basic firewall bridge server failover configuration, host_a and host_b are deployed inside the firewall, and a further host is deployed outside the firewall.

The Server Access Bridge server (Server_Access_P) runs on host_a (internal) and port 4500, and is configured to connect to the ObjectServer (NCOMS_P) using the host name (Primary) and port (4100) defined in the omni.dat interfaces file. The Server Access Bridge server connects to a corresponding Client Access Bridge server (Client_Access_P) which runs on the external host with server port external: 10002 and client port: 10001 defined.

The Server Access Bridge server (Server_Access_B) runs on host_b (internal) and port 4500, and is configured to connect to the ObjectServer (NCOMS_B) using the host name (Primary) and port (4100) defined in the omni.dat interfaces file. The Server Access Bridge server connects to a corresponding Client Access Bridge server (Client_Access_B) which runs on the external host with server port external: 10102 and client port: 10101 defined.

The probe makes an initial connection to port 10001 on the Client Access Bridge server (Client_Access_P) and then routes the data across the firewall to the ObjectServer (NCOMS_P) using the Server Access Bridge server (Server_Access_P). If that connection is not available, the probe uses port 10101 on the Client Access Bridge server (Client_Access_B) to route the data across the firewall to the ObjectServer (NCOMS_B) using the Server Access Bridge server (Server_Access_B).