County fabric designers prefer IBGP with route reflectors placed on the spines. What underlay routing pattern does that describe?
Select an answer to reveal the explanation.
Short Explanation
Picture the spines as gossip hubs for IBGP—leaves peer to the reflectors instead of meshing with every other leaf. That is a classic alternate to EBGP Clos. Route reflectors are for BGP scale, not STP.
Full Explanation
IBGP with route reflectors—often hosted on spines—is a recognized IP-fabric underlay alternative to hop-by-hop EBGP. Reflectors reduce the need for a full iBGP mesh among leaves. This pattern still depends on IP underlay reachability and proper reflector client design. It is not an EBGP public-ASN mandate, a no-BGP spine model, or an STP mechanism.