The NOC asks whether classic underlay PIM is mandatory whenever EVPN multicast features are used in the city fabric. What is the accurate contrast?
Select an answer to reveal the explanation.
Short Explanation
Lots of city fabrics ship BUM with ingress replication and EVPN membership—no underlay PIM choir required. PIM-assisted underlay trees are a design choice, not a universal law. And PIM never takes over Type-2/Type-5's day jobs.
Full Explanation
Many EVPN-VXLAN deployments distribute BUM with ingress replication guided by EVPN membership, without underlay multicast trees. Underlay PIM (or other multicast underlays) is optional for some optimized designs, not universally mandatory. MSDP-on-every-leaf is not a prerequisite for EVPN signaling, and PIM does not replace Type-2/Type-5 host and prefix ads.