What is the default frequency of SD-WAN probes sent between VPN peers in a Cisco Meraki MX SD-WAN deployment?

Question

Options

• A10 milliseconds
• B100 milliseconds
• C1 second
• D10 seconds

• A
  2% (1)
• B
  2% (1)
• C
  95% (41)

Explanation

In Cisco Meraki MX SD-WAN deployments, probes are sent between VPN peers every 1 second (option C), allowing the system to continuously monitor path quality metrics like latency, jitter, and packet loss with near-real-time granularity. Options A (10ms) and B (100ms) are too aggressive - probing at those rates would generate excessive overhead across potentially hundreds of VPN tunnels and is not how Meraki is designed to operate. Option D (10 seconds) is too infrequent; a 10-second gap would make the system slow to detect and react to path degradation, undermining the purpose of dynamic path selection. A useful memory tip: think of SD-WAN probes like a heartbeat - 1 second is the natural "pulse rate" that balances responsiveness with efficiency, and Meraki uses this interval to make failover decisions in under a few seconds when a path degrades.

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