This read-only enumerated value reports the port-level LLDP control mode on this 100 Gigabit Ethernet (100GbE) client port: notApplicable, rxonly, or disabled (txOnly and txAndRx are not supported here). With rxonly selected and LLDP enabled network-wide, the port will listen for and store neighbor-discovery information without transmitting its own LLDP frames, which is how an operator sees what's plugged into a client port without advertising local details outward. For example, setting this to rxonly on client port 2 would let the NE learn and display the identity of whatever switch or router is connected there, while disabled would let previously learned neighbor data simply age out.