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300-415 · Question #90
300-415 Question #90: Real Exam Question with Answer & Explanation
The correct answer is C: 5. With two WAN Edge devices each connected to 5 transports, the minimum OMP paths-per-prefix value that allows all local transport paths to be advertised is 5, covering all transports on a single WAN Edge.
WAN Edge Router Deployment
Question
Refer to the exhibit. A network administrator is configuring OMP in vManage to advertise all the paths for the same prefix from a site that has two WAN Edge devices Each WAN Edge device is connected to three ISPs and two private MPLS transports. What is the minimum value for "Number of Paths advertised per Prefix" that should be configured?
Options
- A2
- B3
- C5
- D10
Explanation
With two WAN Edge devices each connected to 5 transports, the minimum OMP paths-per-prefix value that allows all local transport paths to be advertised is 5, covering all transports on a single WAN Edge.
Common mistakes.
- A. A value of 2 would only allow vSmart to advertise 2 paths per prefix, dropping 3 valid transport paths per WAN Edge device.
- B. A value of 3 covers only the ISP transports and would omit the 2 MPLS transport paths from OMP advertisements.
- D. A value of 10 would accommodate both WAN Edge devices fully (5 paths each), but 5 is the minimum needed to at least advertise all paths from one device without dropping any.
Concept tested. OMP number of paths advertised per prefix configuration
Topics
#OMP#WAN Edge#Path Advertisement#TLOC
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