In dual-link cold backup, after the AP and the active and standby WAC establish dual links, they will periodically send Echo messages to the active and standby WACs to perform CAPWAP heartbeat…

Question

Options

• ATrue
• BFalse

• A
  19% (8)
• B
  81% (34)

Explanation

Option B is correct because blindly minimizing the CAPWAP heartbeat detection interval and retry count introduces serious risks: an overly aggressive configuration can trigger false positive failures, causing the AP to unnecessarily switch from the active WAC to the standby WAC during momentary network congestion or transient delays - not actual link failures. Frequent, spurious failovers destabilize the network and increase control-plane overhead, which defeats the purpose of a resilient dual-link design.

Option A is incorrect because it ignores this trade-off; while smaller values do detect failures faster, "as small as possible" is an extreme that sacrifices stability for speed - network engineers must balance detection sensitivity against false-alarm rates and traffic overhead.

Memory tip: Think of it like a smoke detector sensitivity setting - crank it too high (too sensitive) and it triggers on burnt toast, not just real fires. CAPWAP heartbeat tuning works the same way: find the sweet spot, don't just minimize blindly.

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