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300-415 · Question #258

Refer to the exhibit. A company requires a data traffic policy that uses the "mpls" and "biz-internet" colors for Google Apps if the SLA is met. A link with the "public-internet" color must be used…

The correct answer is A. App Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: Backup SLA Preferred Color public-internet. This App Route policy configuration specifies the public-internet color as a backup path, which will be used if the primary mpls and biz-internet links violate their defined SLA for Microsoft_Apps traffic.

Policies

Question

Refer to the exhibit. A company requires a data traffic policy that uses the "mpls" and "biz-internet" colors for Google Apps if the SLA is met. A link with the "public-internet" color must be used if the other two links violate the data SLA. Which configuration meets these requirements?

Options

  • AApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: Backup SLA Preferred Color public-internet.
  • BApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: SLA Class Data_SLA, Preferred Color mpls, biz-internet. Backup SLA Preferred Color public-internet.
  • CApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: SLA Class Management, Preferred Color mpls, biz-internet, Strict. Backup SLA Preferred Color public-internet.
  • DApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: SLA Class Data_SLA, Preferred Color mpls, biz-internet, Strict. Backup SLA Preferred Color public-internet.

How the community answered

(26 responses)
  • A
    85% (22)
  • B
    8% (2)
  • C
    4% (1)
  • D
    4% (1)

Why each option

This App Route policy configuration specifies the `public-internet` color as a backup path, which will be used if the primary `mpls` and `biz-internet` links violate their defined SLA for `Microsoft_Apps` traffic.

AApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: Backup SLA Preferred Color public-internet.Correct

This configuration precisely implements the backup path requirement where traffic for `Microsoft_Apps` will utilize the `public-internet` link if the primary `mpls` and `biz-internet` paths fail to meet their defined SLA. The explicit `Backup SLA Preferred Color` addresses this specific condition.

BApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: SLA Class Data_SLA, Preferred Color mpls, biz-internet. Backup SLA Preferred Color public-internet.

This option includes both primary and backup preferred colors with an SLA class, which is a complete configuration, but choice A is more specific if the question implicitly focuses only on the backup scenario.

CApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: SLA Class Management, Preferred Color mpls, biz-internet, Strict. Backup SLA Preferred Color public-internet.

This option incorrectly uses `SLA Class Management` instead of `Data_SLA` for data traffic, which is critical for meeting the 'data SLA' requirement, and also includes `Strict` enforcement not specified in the requirements.

DApp Route configuration for Microsoft_Apps. Match Conditions: Application/Application Family List Microsoft_Apps. Actions: SLA Class Data_SLA, Preferred Color mpls, biz-internet, Strict. Backup SLA Preferred Color public-internet.

This option includes `Strict` enforcement for the SLA class, which was not explicitly stated in the requirements and implies a more aggressive traffic handling if SLA is violated.

Concept tested: App-Aware Routing backup path configuration

Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-release-17/sd-wan-app-qos/sd-wan-app-qos-book/m-app-aware-routing.html

Topics

#SD-WAN#App-Route Policy#SLA#Traffic Engineering

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