What is the first step to t-shoot unidirectional LLDP? I have a scenario (on a backbone circuit) where the A-router (Junos PTX1000) is seeing it's expected LLDP neighbor but the Z-router (Cisco ASR9k) is not. LLDP is configured globally on both A & Z routers and NOT on the individual interfaces. Also, both physical interfaces on the A & Z routers are configured inside LACP bundles. Continuity, fault propagation, light levels on the circuit looks good and LLDP is enabled on the intermediate DWDM nodes. Thanks in advance.