There can be a nasty little problem (you might want to call it bug) that prevents the APIC from discovering the connected Nexus Leaf Switches. The reason behind it is that after an CIMC Update and/or wipe of the CIMC it can happen that LLDP is enabled on the VIC Card. The problem here is that if it is enabled on the VIC, the LLDP messages get intercepted by the Firmware on the VIC and never reach the APIC Software. So the APIC can’t discover the Leaf’s. Here’s how to…