This object reports the number of sessions currently active under this device's VPN load-balancing (clustering) role, where the appliance is redirecting or sharing remote-access sessions across a cluster of VPN concentrators. An admin can use this to confirm the load-balancing feature is actually distributing load as configured, rather than funneling all sessions to a single cluster member. A cluster master reporting a steadily low count here while overall VPN usage is high would suggest sessions are landing directly on member devices rather than being balanced through this one.