LLDP configuration overview LLDP configuration consists of several general steps. Figure: Elements in the configuration 1 LLDP Profile elements define settings for LLDP announcements and the type-length-values (TLVs) that the NGFW Engine announces. You can create custom LLDP Profile elements or use the default LLDP Profile element. 2 In the properties of each NGFW Engine, you select the LLDP Profile that the NGFW Engine uses, and enable LLDP for individual Layer 3 Physical interfaces.