The real DESCRIPTION field here is just the auto-generated stub "Cisco UCS fabric:FcoeSanEp:peerPortId managed object property", so it carries no real prose -- but the property name and its Gauge32 type tell you what it holds: It holds the port number on the far end of this FCoE SAN uplink port's connection. Paired with peerSlotId and peerChassisId (or the SAN switch identity), this is the coordinate that tells an admin exactly which port on the upstream FCoE Forwarder switch port it connects to this local link terminates on, which is what you actually need when calling the SAN team to check the other end of a cable. This FCoE SAN uplink port might report peerPortId 3, meaning it lands on port 3 on the far-end device.