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300-415 · Question #6

A voice packet requires a latency of 50 msec. Which policy is configured to ensure that a voice packet is always sent on the link with less than a 50 msec delay?

The correct answer is D. centralized data. To ensure voice packets use a link meeting a specific latency requirement across the SD-WAN fabric, a centralized data policy is used.

Policies

Question

A voice packet requires a latency of 50 msec. Which policy is configured to ensure that a voice packet is always sent on the link with less than a 50 msec delay?

Options

  • Alocalized data
  • Blocalized control
  • Clocalized control
  • Dcentralized data

How the community answered

(24 responses)
  • A
    4% (1)
  • B
    8% (2)
  • C
    13% (3)
  • D
    75% (18)

Why each option

To ensure voice packets use a link meeting a specific latency requirement across the SD-WAN fabric, a centralized data policy is used.

Alocalized data

Localized data policies are applied at a specific WAN Edge and handle local traffic manipulation (e.g., QoS, policing), not dynamic path selection based on network-wide performance metrics.

Blocalized control

Localized control policies manipulate routing at a specific WAN Edge, not for dynamic path selection based on application requirements across the overlay.

Clocalized control

Localized control policies manipulate routing at a specific WAN Edge, not for dynamic path selection based on application requirements across the overlay.

Dcentralized dataCorrect

A centralized data policy, specifically an application-aware routing policy, is used to steer traffic like voice packets onto links that meet predefined quality-of-service (QoS) criteria such as latency thresholds. This policy is configured on vManage, distributed by vSmart, and enforced by WAN Edge devices across the overlay network to select the best path dynamically.

Concept tested: Centralized data policy for application-aware routing

Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/sdwan-xe-gs-book_chapter_0100.html#wp1067201633

Topics

#SD-WAN Policies#Centralized Data Policy#Application-Aware Routing#SLA Path Selection

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