The value of tmnxAncpStrInfSapPortId indicates, together with the
object tmnxAncpStrInfSapEncapValue the SAP-id to which
the ANCP-string defined in tmnxAncpStrInfAncpString is associated.
The value of this object is only meaningful when the value of the
object tmnxAncpStrInfAssociation is set to sap(2).