Which option about the Cisco UCCE heartbeat interval and maximum number of missed heartbeats allowed between duplexed sides over the private network is true?

Question

Options

• A100 ms, 3 heartbeats
• B400 ms, 3 heartbeats
• C400 ms, 5 heartbeats
• D100 ms, 5 heartbeats

• B
  7% (2)
• C
  4% (1)
• D
  89% (25)

Explanation

In Cisco UCCE duplexed deployments, the two sides exchange heartbeats every 100 ms over the private (inter-server) network, and a failover is triggered only after 5 consecutive missed heartbeats - making option D the only fully correct pairing. Options B and C use 400 ms, which is four times too long and would make the system dangerously slow to detect a failure. Options A and C use 3 missed heartbeats, which is too low and would risk false failovers on brief network blips; Cisco chose 5 to balance responsiveness with stability. The 400 ms figure is a common distractor likely drawn from other Cisco HA timers (such as certain HSRP or router keepalive defaults), so don't confuse them.

Memory tip: Think "1-5 Drive" - 100 ms interval, 5 misses allowed. Five fast misses = 500 ms total detection time, which is fast enough to matter but tolerant enough to avoid false alarms.

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