300-415 Question 163
Single answerAn enterprise is deploying multicast traffic across its Cisco SD-WAN network for a video conferencing application. The network administrator wants to ensure that multicast packets can traverse the SD-WAN fabric efficiently. Which of the following statements about multicast support in Cisco SD-WAN is correct?
- A
Cisco SD-WAN uses Protocol Independent Multicast (PIM) for multicast routing across the fabric.
- B
Cisco SD-WAN uses replication at the branch vEdge router to deliver multicast traffic to non-multicast-enabled devices.
- C
Multicast support in Cisco SD-WAN requires enabling Multicast Distribution Trees (MDTs) on all transport interfaces.
- D
Cisco SD-WAN uses Overlay Management Protocol (OMP) to advertise multicast routes across the fabric.
Show answer and explanation
Correct answer: D
Explanation
Cisco SD-WAN supports multicast by leveraging OMP to advertise multicast routes and group membership information across the fabric. This eliminates the need for traditional multicast routing protocols like PIM or MDTs. OMP handles multicast routing efficiently within the SD-WAN environment, ensuring seamless delivery of multicast traffic to all participating devices.
- A. Incorrect.
Cisco SD-WAN does not use PIM. Instead, it relies on OMP to handle multicast routing and distribution across the SD-WAN fabric.
- B. Incorrect.
Replication is performed at the edge when multicast receivers are connected, but this does not explain how multicast routes are advertised across the SD-WAN fabric.
- C. Incorrect.
MDTs are not used in Cisco SD-WAN. Cisco SD-WAN relies on OMP and the fabric to manage multicast traffic without the need for MDTs.
- D. Correct.
Cisco SD-WAN uses Overlay Management Protocol (OMP) to advertise multicast routes and group membership information between SD-WAN devices, facilitating efficient multicast delivery.