QuestionQ50

Network Design

An engineer needs to design a VXLAN EVPN network. The solution must optimize broadcast, unknown unicast, and multicast (BUM), shorten BUM replication, and use PIM anycast RP.

Which solution should be included in the design?

  • A head-end replication
  • B PIM sparse mode
  • C PIM dense mode
  • D ingress replication
Explanation

PIM anycast RP is used with PIM sparse mode for redundant rendezvous-point operation. In a VXLAN EVPN fabric, PIM sparse mode supports multicast-based BUM forwarding, so the ingress VTEP sends one copy into the underlay multicast network instead of replicating a separate copy to every remote VTEP.

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