Counters on a source leaf show VXLAN packets leaving, but the remote leaf shows no corresponding VXLAN ingress or decap. What troubleshooting approach helps?
Select an answer to reveal the explanation.
Short Explanation
One side says ‘we shipped it,’ the other says ‘never saw it’—that’s a path mystery, not a MAC-flush festival. Compare directional VXLAN counters hop by hop to find where the boxes vanish. Asymmetry points at underlay or mid-path filters.
Full Explanation
Asymmetric VXLAN counters—egress encapsulation without remote ingress—suggest loss or misdirection in the underlay path, ACL/firewall filters, or incorrect outer addressing. Directional analysis narrows whether the problem is local encap, transit, or remote receive/decap. Blind MAC clears or scheduled spine reboots do not replace methodical counter correlation. This technique is especially useful in multi-hop civic Clos topologies.