Designing Cisco Data Center Infrastructure (DCID) — Question 167

A data center with over 4000 VLANs must be stretched to a disaster recovery site. The solution must support the migration of virtual machines to a disaster recovery site. To support the scalability of the solution, the internal fabric of the main site must be from the DCI network. The connecting network infrastructure uses a 10 Gbps link with PIM ASM supported, which will be replaced with a different overlay in the next 12 months. The solution must support head-end replication for broadcast, unknown unicast, and multicast traffic. Which solution must be used to meet these requirements?

Answer options

• A. LISP
• B. VXLAN Multi-Site
• C. OTV
• D. MPLS over GRE

Correct answer: B

Explanation

The correct answer is VXLAN Multi-Site as it effectively supports the requirements for stretching a vast number of VLANs and facilitates the necessary virtual machine migrations with scalability. Other options, such as LISP and OTV, do not provide the same level of support for head-end replication of multicast traffic, while MPLS over GRE is not optimal for this specific use case.