A packet between two VMs on different municipal leaves must cross the VXLAN fabric. What data-plane behavior is fundamental?
Select an answer to reveal the explanation.
Short Explanation
The leaf wraps the original Ethernet frame in a VXLAN UDP/IP envelope addressed to the far VTEP—like putting a campus letter in a city courier pouch. Spines forward that outer IP; they are not supposed to peel VXLAN on every hop and bridge the inner VLAN across the underlay.
Full Explanation
VXLAN data plane encapsulates the original Ethernet frame with a VXLAN header transported over UDP/IP between VTEP addresses. Intermediate underlay hops forward based on the outer IP header without needing tenant MAC visibility. Spines typically do not decapsulate per-hop for ordinary transit, and VXLAN exists specifically to carry Layer-2 frames across an IP fabric. Understanding ingress encapsulation to the remote VTEP is foundational for JNCIP-DC VXLAN troubleshooting.