Which routes does the overlay management protocol advertise in an SD-WAN overlay?
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A. B. C. D.C.
In an SD-WAN overlay, the overlay management protocol (OMP) is responsible for advertising the routes that are learned by the SD-WAN edge devices from the underlay network and the overlay network.
The underlay network refers to the physical infrastructure that connects the SD-WAN edge devices, while the overlay network is the logical network that is created by the SD-WAN technology to provide connectivity between the edge devices.
Based on the above information, option A, which states that the OMP advertises underlay, MPLS, and overlay routes, is the correct answer.
Here is a brief explanation of each type of route advertised by OMP:
Underlay routes: These are the routes learned by the SD-WAN edge devices from the physical infrastructure that connects them. Underlay routes can include static routes, dynamic routing protocols such as OSPF or BGP, and other routing information.
MPLS routes: These are the routes learned by the SD-WAN edge devices from the MPLS network that is used to provide connectivity between different sites. MPLS routes can include prefixes, labels, and other information specific to the MPLS network.
Overlay routes: These are the routes learned by the SD-WAN edge devices from the logical network created by the SD-WAN technology. Overlay routes can include prefixes, TLOCs (tunnel locations), and other information specific to the SD-WAN overlay.
In conclusion, the correct answer to the question is A, which states that the OMP advertises underlay, MPLS, and overlay routes.