Ops asks what role the spines play in the civic fabric if overlays typically terminate on the leaves. Which statement is most accurate?
Select an answer to reveal the explanation.
Short Explanation
Leaves are where the overlay often hangs its hat; spines are the IP freeway in the middle. In ERB-style civic fabrics, spines move packets between leaves—they do not need to be every tenant’s VTEP. Think transit, not front desk.
Full Explanation
In common ERB-oriented IP fabrics, overlay (VTEP) functions terminate on leaves while spines provide Layer 3 underlay transit between leaves. Spines are not required to host every VTEP or to bridge tenant VLANs as an L2 fabric core. Underlay routing remains essential spine work. Confusing spine transit with STP blocking or pure L2 access roles misstates Clos IP-fabric architecture.