LevelOne FBR-4000 has four WAN ports that allow you to provide network connectivity and proven ultimate redundancy for higher performance improvement. You can join your network to different Internet Service Providers in order to prevent at any single point of failure thus providing better reliable network interfacings. The FBR-4000 is able to determine the available bandwidth to a remote sub-net through an access link, assign incoming and outgoing Internet traffic to the available access link, and detect failed access links and divert Internet traffic around them.