ACI switches discover neighbor devices, hosts, and VMs through discovery protocols. Link Layer Discovery Protocol (LLDP) or Cisco Discovery Protocol (CDP) can be implemented for use in the PowerEdge MX environment integrated with Cisco ACI .
It is recommended to disable LLDP in the distributed virtual switch (vDS) while creating a SmartFabric. After the SmartFabric is established, globally enable LLDP in the APIC fabric or enable under each interface. Enable LLDP in the vCenter vDS. Using LLDP does not impact VM discovery or network traffic between the vDS and ACI.
Alternatively, CDP can be used by selecting CDP on both ACI and vDS. LLDP should remain disabled on the MX SmartFabric.
lldp management-addr-tlv ipv4 virtual-ip
and save the configuration.