350-501 Question #188: Real Exam Question with Answer & Explanation

The correct answer is A: adding a new PCE server with lower precedence than the primary PCE. ISP delegation to PCE servers involves managing the hierarchy and selection of PCEs for path computation requests, which is achieved by adding new PCEs with specific precedence settings.

MPLS and Segment Routing

Question

Which two actions describe ISP delegation to PCE servers? (Choose two)

Options

Aadding a new PCE server with lower precedence than the primary PCE
Bchanging the precedence of any of the PCE servers
Cremoving TE re-optimization timer timeouts
Dentering the mpls traffic-eng reoptimize command
Eadding a new PCE server with higher precedence than the primary PCE

Explanation

ISP delegation to PCE servers involves managing the hierarchy and selection of PCEs for path computation requests, which is achieved by adding new PCEs with specific precedence settings.

Common mistakes.

B. While changing precedence is part of PCE management, options A and E describe more specific actions of adding servers with a defined delegation role through precedence.
C. Removing TE re-optimization timer timeouts affects MPLS TE tunnel behavior, not the delegation strategy for PCE servers.
D. Entering the mpls traffic-eng reoptimize command triggers a manual re-optimization of TE tunnels, which is distinct from PCE delegation.

Concept tested. MPLS PCE delegation and precedence

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/mp_te_path_comp/configuration/xe-3s/mp-te-path-comp-xe-3s-book/mp-te-pce-cap.html

Topics

#PCE#MPLS TE#PCE Delegation#Server Precedence

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