The real DESCRIPTION field here is just the auto-generated stub "Cisco UCS fabric:FcoeEstcEp:peerChassisId 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 chassis identifier of whatever sits on the far end of this FCoE storage uplink port's physical connection, when that far end is a chassis IOM rather than another switch. On the FCoE storage array or forwarder port it is cabled to, this is not really applicable, so this field typically reports 0 for this FCoE storage uplink port -- a nonzero value here would actually be a sign this port is unexpectedly wired to a blade chassis instead of the SAN. Expect this to read 0 for a normal SAN-facing FCoE storage uplink port; a nonzero value such as 6 would flag a wiring mistake worth investigating.