300-415 Question 160
Select 2An organization is deploying Cisco SD-WAN to support multicast traffic for video streaming between branch sites. They want to ensure multicast traffic is efficiently routed across the SD-WAN fabric. Which of the following statements are true about multicast support in Cisco SD-WAN?
- A
Cisco SD-WAN uses Protocol Independent Multicast (PIM) for multicast routing between sites.
- B
Multicast traffic is supported only over TLOCs between SD-WAN edge devices.
- C
You must enable multicast routing and configure multicast policies on vSmart controllers to manage multicast traffic.
- D
Cisco SD-WAN supports native multicast replication at the vEdge routers.
- E
vSmart controllers act as multicast replication engines in Cisco SD-WAN.
Show answer and explanation
Correct answers: C, D
Explanation
Cisco SD-WAN provides support for multicast traffic by implementing native multicast replication at vEdge routers and using vSmart controllers to manage multicast routing policies. This approach eliminates the need for traditional multicast routing protocols like PIM and ensures efficient delivery of multicast traffic across the entire SD-WAN fabric.
- A. Incorrect.
Incorrect. Cisco SD-WAN does not use PIM for multicast routing across the SD-WAN fabric. Instead, it uses its overlay routing mechanism and replication capabilities.
- B. Incorrect.
Incorrect. While multicast traffic is supported over TLOCs, this is not a limitation. Multicast can be routed across the entire SD-WAN fabric as per configuration.
- C. Correct.
Correct. To enable multicast in the SD-WAN fabric, you must configure multicast routing and policies on the vSmart controllers to ensure proper propagation and control of multicast traffic.
- D. Correct.
Correct. Cisco SD-WAN supports native multicast replication at the vEdge routers, allowing efficient delivery of multicast streams without relying on external routers.
- E. Incorrect.
Incorrect. vSmart controllers do not act as multicast replication engines. Instead, they manage the policies and control plane for multicast traffic.