Designing Cisco Enterprise Networks (ENSLD) — Question 25

Which design consideration must be made when dual WAN Edge routers are deployed at a branch site?

Answer options

• A. Use BGP AS-path prepending to influence egress traffic and use MED to influence ingress traffic from the branch.
• B. HSRP priorities must match the OMP routing policy to prefer one WAN Edge over the other.
• C. Traffic must be symmetrical as it egresses the WAN Edges and returns from remote sites for DPI to function properly.
• D. Configure BFD between WAN Edge routers to detect sub-second link failures.

Correct answer: C

Explanation

The correct answer, C, is crucial because DPI requires symmetrical traffic flow to analyze the data effectively. Options A and B are related to routing and redundancy but do not address the traffic symmetry requirement for DPI. Option D, while important for link monitoring, does not pertain to the symmetry needed for effective DPI functionality.