Troubleshooting Cisco Data Center Infrastructure (DCIT) — Question 3

A customer configures HSRP between two data centers that are interconnected with OTV. The configuration succeeds, but traffic between two ESXi virtual hosts on the same site is routed suboptimally through the OTV overlay. Which two actions optimize the traffic? (Choose two.)

Answer options

• A. Disable first-hop redundancy.
• B. Filter HSRP traffic by using a Layer 3 VACL on the OTV edge devices.
• C. Filter HSRP by using a Layer 2 MAC list on the ESXi vSwitch.
• D. Filter HSRP traffic by using a Layer 3 VACL on the ESXi vSwitch.
• E. Filter HSRP by using a Layer 2 MAC list on the OTV edge devices.

Correct answer: A, B

Explanation

Disabling first-hop redundancy ensures that traffic takes the most direct route without being routed through the OTV overlay unnecessarily. Filtering HSRP traffic with a Layer 3 VACL on the OTV edge devices prevents this traffic from traversing the overlay, thus optimizing the routing path. The other options either do not directly address the routing issue or apply filtering inappropriately.