Verify LLDP on VMware vSphere Distributed Switch in VMware vCenter
Log in to VMware vCenter and select the Networking tab.
Expand the vSphere Data Center section and right-click the Distributed Switch listing.
From the Settings option, click Edit Settings and select Advanced.
Within the Link Layer policy drop-down menu, select Link Layer Discovery Protocol, and from the Operation listing, select Both as shown in figure below.
Once LLDP is enabled on all devices, and the Fabric Management Address is in the LLDP messages throughout the PowerEdge MX environment, hosts and VMs are learned through the VMM domain integration. This can be verified within the Client End-Points section within the EPGs in the Cisco APIC as shown in figure below.