350-501 · Question #188
Which two actions describe ISP delegation to PCE servers? (Choose two)
The correct answer is A. adding a new PCE server with lower precedence than the primary PCE E. adding a new PCE server with higher 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.
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
How the community answered
(66 responses)- A88% (58)
- B8% (5)
- C2% (1)
- D3% (2)
Why each option
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.
Adding a new PCE server with lower precedence allows it to function as a backup or secondary PCE, receiving requests if the primary is unavailable or less preferred, which is a delegation strategy.
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.
Removing TE re-optimization timer timeouts affects MPLS TE tunnel behavior, not the delegation strategy for PCE servers.
Entering the mpls traffic-eng reoptimize command triggers a manual re-optimization of TE tunnels, which is distinct from PCE delegation.
Adding a new PCE server with higher precedence allows it to become the new primary or a more preferred PCE, taking over path computation requests from existing servers, which is also a delegation strategy.
Concept tested: MPLS PCE delegation and precedence
Source: 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
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