This read-write object sets the Control Protocol Disposition for CDP (Cisco Discovery Protocol) frames, identified by MAC address 01:00:0C:CC:CC:CC and Ethertype 0x2000, on this Ethernet traffic port. An administrator configures this to prevent CDP neighbor-discovery information from leaking across a service demarcation, or to allow it through for legitimate diagnostic purposes. For example, setting this disposition to discard stops a customer's CDP advertisements from being learned by the provider's own switches connected on this port.