CCDE Practical Exam — Question 26

An existing Cisco ACI Multi-Site setup with default fabric settings contains endpoints that communicate with an MTU of 1500. What is the minimum MTU value that must be supported by the ISN to allow control plane endpoint information exchange between sites?

Answer options

Correct answer: C

Explanation

The correct answer is C (9100) because this MTU size ensures that encapsulation overhead does not exceed the maximum transmission unit of the endpoints, allowing for proper communication. Options A (9000), B (1554), and D (1600) do not meet the minimum requirement needed for the ISN to effectively exchange control plane information while accommodating the endpoints' MTU size.