1-11To do… Use the command… RemarksSet the number of fast sentLLDPDUs lldp fast-count count Optional3 by defaultBoth the LLDPDU transmit interval and delay must be less than the TTL to ensure that the LLDPneighbors can receive LLDP frames to update information about the device you are configuring beforeit is aged out.Configuring the Encapsulation Format for LLDPDUsLLDPDUs can be encapsulated in Ethernet II or SNAP frames.z With Ethernet II encapsulation configured, an LLDP port sends LLDPDUs in Ethernet II frames andprocesses only Ethernet II encapsulated incoming LLDPDUs.z With SNAP encapsulation configured, an LLDP port sends LLDPDUs in SNAP frames andprocesses only SNAP encapsulated incoming LLDPDUs.By default, LLDPDUs are encapsulated in Ethernet II frames. If the neighbor devices encapsulateLLDPDUs in SNAP frames, you can configure the encapsulation format for LLDPDUs as SNAP, thusguaranteeing communication with the other devices in the network.Follow these steps to configure the encapsulation format for LLDPDUs:To do… Use the command… RemarksEnter system view system-view —Enter Ethernetinterface viewinterface interface-typeinterface-numberEnter Ethernetinterface view orport group view Enter port groupviewport-group manualport-group-nameRequiredUse either command.Configure the encapsulation formatfor LLDPDUs as SNAP lldp encapsulation snapRequiredEthernet II encapsulationformat applies by default.LLDP-CDP (CDP is short for the Cisco Discovery Protocol) packets use only SNAP encapsulation.Configuring LLDP TrappingLLDP trapping is used to notify the network management system (NMS) of events such as newneighboring devices detected and link malfunctions.