Figure 198 shows a typical FortiGate-620B HA virtual cluster consisting of two FortiGate‑620B units (620_ha_1 and 620_ha_2) connected to and internal network, an engineering network and the Internet. To simplify the diagram the heartbeat connections are not shown.

The traffic from the internal network is processed by the root VDOM, which includes the port1 and port2 interfaces. The traffic from the engineering network is processed by the Eng_vdm VDOM, which includes the port5 and port6 interfaces. VDOM partitioning is configured so that all traffic from the internal network is processed by 620_ha_1 and all traffic from the engineering network is processed by 620_ha_2.

This virtual cluster uses the default FortiGate-620B heartbeat interfaces (port3 and port4).