300-415 Question #297: Real Exam Question with Answer & Explanation

The correct answer is B: OMP. The Overlay Management Protocol (OMP) used in Cisco SD-WAN possesses the highest default administrative distance among the given routing protocols, ensuring its routes are less preferred than other routing sources by default.

Architecture

Question

Which routing protocol has the highest default administrative distance?

Options

AIS-IS
BOMP
CIBGP
Dexternal EIGRP

Explanation

The Overlay Management Protocol (OMP) used in Cisco SD-WAN possesses the highest default administrative distance among the given routing protocols, ensuring its routes are less preferred than other routing sources by default.

Common mistakes.

A. IS-IS has a default administrative distance of 115, which is lower than OMP's 250.
C. Internal BGP (iBGP) has a default administrative distance of 200, which is lower than OMP's 250.
D. External EIGRP has a default administrative distance of 170, which is lower than OMP's 250.

Concept tested. Administrative Distance (AD) for routing protocols

Reference. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/sdwan-config-routing.html

Topics

#OMP#Administrative distance#Routing protocols#SD-WAN routing

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