A township runs EBGP in the underlay for IP fabric reachability and iBGP EVPN for the overlay on separate session/family concerns. What awareness does that design reflect?
Select an answer to reveal the explanation.
Short Explanation
Think two conversations: underlay EBGP gets packets between loopbacks; overlay EVPN iBGP swaps MAC/IMET/prefix intel. Separating ASN/session/family concerns is normal fabric hygiene. It does not outlaw iBGP EVPN or strip VXLAN encapsulation.
Full Explanation
IP Clos fabrics often use EBGP (or other underlay routing) for loopback reachability while EVPN runs as an MP-BGP overlay family—frequently iBGP to RRs—on aligned or carefully designed session structures. Separation of underlay IP routing concerns from overlay EVPN is a common pattern. EVPN iBGP does not disable VXLAN encapsulation, nor is a single shared family mandatory.