300-415 Question 133
Single answerAn enterprise network engineer is configuring OMP (Overlay Management Protocol) on a Cisco SD-WAN environment. The goal is to ensure that control-plane information such as routes, TLOCs, and service advertisements are exchanged between the vSmart controllers and the edge devices. Which OMP configuration step is required for the SD-WAN overlay to function correctly?
- A
Enable OMP on both vSmart and vEdge devices by explicitly configuring OMP under each VPN.
- B
Ensure that all edge devices are running OSPF to propagate routes to the vSmart controller via OMP.
- C
Verify that OMP is enabled by default on vSmart controllers and edge devices without requiring additional configuration.
- D
Configure OMP to use BGP as the underlying transport protocol between vSmart controllers and edge devices.
Show answer and explanation
Correct answer: C
Explanation
In Cisco SD-WAN, OMP is the protocol responsible for exchanging control-plane information such as routes, TLOCs, and service advertisements between vSmart controllers and edge devices. OMP is enabled by default on all vSmart controllers and edge devices, ensuring it operates out-of-the-box without requiring explicit configuration.
- A. Incorrect.
OMP does not need to be explicitly enabled on vSmart or vEdge devices under each VPN. OMP is enabled by default on vSmart controllers and edge devices.
- B. Incorrect.
OMP does not rely on OSPF for its operation. It is an independent overlay protocol that manages control-plane communication within the SD-WAN fabric.
- C. Correct.
This is correct. OMP is enabled by default on both vSmart controllers and edge devices, and no additional configuration is required for basic functionality.
- D. Incorrect.
OMP does not use BGP as its underlying transport protocol. Instead, OMP communicates directly over the DTLS/TLS tunnels established between SD-WAN devices.