The real DESCRIPTION field here is just the auto-generated stub "Cisco UCS fabric:FcVsanPortEp:ifRole managed object property", so it carries no real prose -- but the property name and its CucsFabricSanEpIfRole type tell you what it holds: It holds UCS Manager's classification of the functional role this VSAN port endpoint plays in the fabric -- for example whether it is acting as a network uplink versus some other interface role. This role tag is what lets UCS Manager apply the right policies and validation rules to this VSAN port endpoint automatically, since a SAN uplink and, say, a server-facing port are configured and monitored very differently even though they share the same underlying object model. For a SAN-facing VSAN port endpoint this typically reads "network", reflecting its job of carrying traffic up to the SAN rather than down to a server or chassis.