Which benefit does a VSAN provide?

VSANs are a fabric virtualization and segmentation mechanism, not a routing protocol solution; inter-VSAN routing (IVR) is a separate optional feature.

VSANs do not restrict traffic to unicast; they isolate traffic by logical membership regardless of the traffic type.

A VSAN creates a logical partition within a shared physical Fibre Channel fabric, ensuring that devices belonging to one VSAN cannot communicate with or even see devices in another VSAN. This isolation improves security, stability, and traffic management across the fabric.

VSAN membership is enforced at the virtual fabric level via VSAN IDs assigned to ports, not as a distinct enforcement mechanism operating independently at both source and destination ports.