The secondary Ethernet port on the OnBoard can optionally be configured for failover, which is also referred to as bonding. Failover is important for high-availability environments where constant accessibility is required to support mission-critical applications. Failover automatically redirects traffic from the primary Ethernet port to the secondary Ethernet port if the primary interface fails. The primary Ethernet port continues to be monitored, and when it starts functioning again, traffic is then automatically redirected back through the primary Ethernet port again. All connection sessions continue without interruption.