300-415 Question #208: Real Exam Question with Answer & Explanation

The correct answer is B: OMP. OMP (Overlay Management Protocol) routes are the mechanism by which WAN Edge routers advertise their local site routing information, including local routing protocols, across the Cisco SD-WAN overlay network.

WAN Edge Router Deployment

Question

Which routes are similar to the IP route advertisements when the routing information of WAN Edge routers is learned from the local site and local routing protocols?

Options

ABGP
BOMP
CTLOC
Dservice

Explanation

OMP (Overlay Management Protocol) routes are the mechanism by which WAN Edge routers advertise their local site routing information, including local routing protocols, across the Cisco SD-WAN overlay network.

Common mistakes.

A. BGP is a local routing protocol that can run on a WAN Edge, but it's not the protocol that advertises this information into the SD-WAN overlay itself; OMP does that.
C. TLOC (Transport Location) refers to the interface on a WAN Edge router that connects to the transport network, identifying the tunnel endpoint, not the advertised IP routes.
D. A service route is a specific type of OMP route used to redirect traffic for a particular service, rather than a general category for all IP route advertisements.

Concept tested. OMP route advertisement mechanism

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

Topics

#OMP#Route advertisement#WAN Edge router#Local routing

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