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300-820 · Question #152

Within which cache timeline do the Webex App endpoints perform a STUN test to calculate round-trip delay time to available media node clusters?

The correct answer is B. 2 hours. Webex App endpoints cache the results of media node cluster reachability data. Within this 2-hour cache window, the client performs STUN (Session Traversal Utilities for NAT) tests to measure round-trip delay (RTT) to available Video Mesh Node clusters and Webex media nodes…

Cisco Webex Core Components

Question

Within which cache timeline do the Webex App endpoints perform a STUN test to calculate round-trip delay time to available media node clusters?

Options

  • A1 hour
  • B2 hours
  • C4 hours
  • D6 hours

How the community answered

(23 responses)
  • A
    4% (1)
  • B
    91% (21)
  • C
    4% (1)

Explanation

Webex App endpoints cache the results of media node cluster reachability data. Within this 2-hour cache window, the client performs STUN (Session Traversal Utilities for NAT) tests to measure round-trip delay (RTT) to available Video Mesh Node clusters and Webex media nodes. This allows the client to intelligently select the optimal media node for a meeting. After 2 hours, the cache expires and a new STUN measurement cycle is triggered to ensure the RTT data reflects current network conditions.

Topics

#Webex App#STUN testing#Media path optimization#RTT calculation

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