Example: Active/Active Clustering – Two-Unit Deployment

Active/Active two-unit cluster shows a two-unit cluster. In a two-unit cluster, HA pairs are not used. Instead, each Cluster Node contains a single Security Appliance. The designated HA ports on the two Security Appliances are connected directly to each other using a cross-over cable. The SonicWall Virtual Router Redundancy Protocol (SVRRP) uses this HA port connection to send Cluster Node management and monitoring state messages. SVRRP management messages are initiated on the Master Node, and monitoring information is communicated from every Security Appliance in the cluster. The HA port connection is also used for configuration synchronization between Cluster Nodes.

Active/Active two-unit cluster