A company has a data center that hosts multiple tenants. The company is adding a second and third data center. The core of each data center is an IRF virtual switch. These are the IRF connections: ? IRF 1 is the core of the first
data center. ? IRF 2 is the core of the second data center. ? IRF 3 is the core of the third data center. ? The three data centers are fully interconnected with dark fiber. ? IRF 1, IRF 2, and IRF 3 have connections to a WAN and
to the Internet. Which option for the connections between the data centers provides the best resiliency and stability?
A. MSTP running on the links
B. SPBM configured across IRF 1, IRF 2, and IRF 3
C. a link aggregation that consists of all of the links
D. IRF 1, IRF 2, and IRF 3 combined into a single IRF virtual device
F. D. IR1, IR2, and IR3 combined into a single IRvirtual device