500-220 Exam - Question 38

Question

Refer to the exhibit. What does the MX Security Appliance send to determine whether VPN traffic exceeds the configured latency threshold in the VoIP custom performance class?

Examice · Accepted Answer

To determine whether VPN traffic exceeds the configured latency threshold in the VoIP custom performance class, the MX Security Appliance sends 100-byte UDP probes every second through VPN tunnels that are established over every WAN link. This method allows the MX to assess the packet loss, latency, and jitter over each VPN tunnel, which is crucial for performance-based decisions.

Ironman_2022 · Answer

The answer is B refer to this documentation:
https://documentation.meraki.com/Architectures_and_Best_Practices/Cisco_Meraki_Best_Practice_Design/Best_Practice_Design_-_MX_Security_and_SD-WAN/Meraki_SD-WAN#Performance_Probes

azjlmpang · Answer

The performance probe is a small payload (approximately 100 bytes) of UDP data sent over all established VPN tunnels every 1 second. MX appliances track the rate of successful responses and the time that elapses before receiving a response. This data allows the MX to determine the packet loss, latency, and jitter over each VPN tunnel in order to make the necessary performance-based decisions.

rnunes1110 · Answer

Answer: B

sattori · Answer

Load balancing is disabled how could be over every WAN link?! Who using load balance for VoIP traffic? Best practice for VoIP traffics when we established over the primary WAN link. And definitely VoIP traffics using UDP not TCP.

80ae5bd · Answer

I agree the answer is C.
Meraki MX sends these probes on every available WAN link, WAN1 here is the only link available for internet traffic.
The Meraki MX security appliance uses 100-byte UDP probes sent every second to measure latency.

farajcmm · Answer

no LB is enabled, so until primary wan 1 ges down there is no wan2 , so it will check with primary link only

500-220 Exam - Question 38

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