This table reports entities that exist within each Remote PHY Node that is communicating with the CCAP Core. Because the entities exist within the Remote PHY Nodes and not the CCAP Core, the RPDs communicate this information to the CCAP core via GCP. This object is based on the entPhysicalTable object specified in the ENTITY-MIB from RFC 6933. An RPD in a shelf MUST report the Entity with EntityIndex one as having a Class value of 'chassis'. This represents the shelf which contains the RPDs. An RPD in a shelf MUST report an Entity with Class value of 'chassis' with a ContainedIn value of zero and a ParentRelPos value of zero. An RPD not in a shelf (i.e., an RPD in a node) MAY report an Entity with EntityIndex one as having a Class value of 'chassis'. If an RPD not in a shelf reports an Entity with EntityIndex one as having a Class value of 'chassis', the RPD SHOULD be treated as an RPD in a one-RPD shelf. An RPD with an Entity with EntityIndex one that does not have a Class value of 'chassis' MUST be treated as an RPD in a node. All RPDs in the same shelf MUST report the same chassis SerialNum for the chassis Entity with EntityIndex one. The CCAP Core reads all attributes of an Entity Object with GCP complex TLV Type 100.6.