3-61Configuring LLDPLLDP OverviewThe Link Layer Discovery Protocol (LLDP) operates on the data link layer. With LLDP, a device canstore and maintain information about itself and the directly-connected neighbor devices for networkadministrators to check link status.LLDP Operating ModeLLDP can operate in one of the following modes:z TxRx: A port in this mode sends and receives LLDPDUs.z Tx: A port in this mode only sends LLDPDUs.z Rx: A port in this mode only receives LLDPDUs.z Disable: A port in this mode does not send or receive LLDPDUs.TLV TypesTLVs encapsulated in LLDPDUs fall into these categories: basic TLVs, organizationally specific TLVs,and media endpoint discovery (MED) related TLVs.Basic TLVs are the base of network device management. Organizationally specific TLVs are defined bythe standard organization, while MED related TLVs are vendor specific for enhanced devicemanagement and are optional to LLDPDUs.Configuring Global LLDP ParametersClick Device > LLDP > Global Setup. The Global LLDP Parameters Page opens.Figure 3-69 Global LLDP Parameters PageThe Global LLDP Parameters Page contains the following fields:Table 3-54 Global LLDP Parameter Page item descriptionItem DescriptionLLDPEnable/disable LACP globally. Two options are available:z Enabled: Enables LLDP globally.z Disabled: Disables LLDP globally.By default, LLDP is disabled globally.
