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Question 23


Refer to the exhibit. This enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer 3 VPN solution and manages the CE routers, but they do not currently support multicast. Which solution quickly allows this multicast traffic to go through while allowing for future scalability?

  • A. Enable a GRE tunnel between nodes C1 and C4.
  • B. Enable a GRE tunnel between nodes C2 and C4.
  • C. Enable a GRE tunnel between nodes CE1 and CE2.
  • D. Implement hub and spoke MPLS VPN over DMVPN (also known as 2547oDMVPN) between CE1 and CE2.
  • E. The service provider must provide a Draft Rosen solution to enable a GRE tunnel between nodes PE1 and PE2.
Answer:

d

User Votes:
A
50%
B
50%
C 1 votes
50%
D
50%
E
50%
Discussions
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Madmo
1 day, 2 hours ago

To get multicast working quickly and without provider support, the best solution is to create GRE tunnels between the CE routers, allowing the enterprise to carry multicast traffic over the unicast-only MPLS VPN.

✅ Answer: C. Enable a GRE tunnel between nodes CE1 and CE2.

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