When devices realize communication between different protocols. Which of the following issues need to be paid attention to when configuring route import? (Multiple choice)

Question

Options

• ARouting priority
• BRoute convergence time
• CRouting metric information
• DRoute feedback

• A
  73% (22)
• B
  27% (8)

Explanation

When redistributing routes between different routing protocols, routing priority (A) must be configured because multiple protocols may learn the same destination, and the router must know which protocol's route to prefer - misconfigured priority causes suboptimal or broken routing. Routing metric information (C) is critical because protocols use incompatible metric systems (e.g., OSPF uses cost, RIP uses hop count), so an imported route must be assigned a valid metric in the target protocol or it may be unusable or incorrectly preferred. Route feedback (D) - also called redistribution loops - occurs when a route imported from Protocol A into Protocol B gets re-imported back into Protocol A, inflating metrics or creating loops; preventing this requires route tagging and filtering policies.

Why B is wrong: Route convergence time is a general network behavior characteristic, not a parameter you configure during route import itself - it's an outcome, not a setting.

Memory tip: Think of the three things a route "carries" when crossing protocol boundaries - its authority (priority), its cost (metric), and the risk of it bouncing back (feedback). If you handle those three, the redistribution is safe.

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