Which SD-WAN Component Distributes Routes via OMP?
Which cloud-based component in Cisco SD-WAN is responsible for establishing a secure connection to each WAN Edge router and distributes routes and policy information via OMP?
Community Insight
The question tests the split of duties among the three controllers, and the trap is to pick vBond because it is the first component to open a secure session with a newly onboarding WAN Edge router.
In Cisco Catalyst SD-WAN, the vSmart controller is the cloud-based control-plane node that maintains OMP sessions with every WAN Edge router over a secure connection and propagates routes, TLOCs, and policy information across the overlay. This page explains why vSmart — not vBond, vManage, or the WAN Edge itself — is the component described in the question.
Option A (vBond) is the most common wrong pick: learners associate vBond with the initial secure connection and authentication of the WAN Edge, but vBond only orchestrates onboarding and never distributes OMP routes or policies.
Community Discussion (6 comments)
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Expert Analysis
Why the Answer Is Correct
The vSmart controller is the control-plane brain of the Cisco SD-WAN overlay: each WAN Edge router builds an OMP session to vSmart over an IPsec-secured connection, and vSmart then acts much like a route reflector, collecting, filtering, and announcing OMP routes, TLOCs, and community/path attributes to every other Edge. Because OMP route and policy distribution is explicitly named in the question, vSmart is the only component that satisfies both halves of the requirement — it holds secure control-plane sessions with each WAN Edge and it is what actually carries route and policy information. In effect, vSmart separates the control plane from the data plane so that Edges never need full-mesh peering among themselves.Why the Other Options Are Wrong
Option A, vBond, is the orchestration node: it validates the digital certificate of a joining WAN Edge and hands it the addresses of vManage and vSmart, but its session ends there — it has no role in distributing OMP routes or policy. Option C, vManage, is the manager/GUI and northbound REST API layer used for configuration, templates, monitoring, and troubleshooting; it is not the OMP route distributor. Option B, the WAN Edge, is the data-plane router that originates and forwards traffic and learns routes from the controller, so it cannot be the component that distributes routes to itself.Community Comment Notes
Several learners converged on D, with marco_123 simply answering "vsmart" and Zamochit agreeing "Yes it's Vsmart." antigel8 gave the clearest doctrinal explanation, describing vSmart as "acting like a RR, collecting, filtering and announcing OMP routes to connected WAN Edge routers." nbvolz first posted "I would say this should be vBond" before posting "I stand corrected...It is v_smart. Correct", which illustrates exactly the trap this question sets. rubendrios argued for B on data-plane grounds, but that answer describes traffic forwarding rather than OMP route and policy distribution.Exam Strategy
On 300-415, anchor each controller to one verb: vBond authenticates/orchestrates, vManage manages/configures/monitors, vSmart distributes routes and policy over OMP. Whenever a question mentions OMP route, TLOC, or policy propagation, select vSmart before re-reading the rest of the wording.
Frequently Asked Questions
Why is vBond not the answer when it makes the first secure connection?
vBond only authenticates a newly joining WAN Edge during onboarding and points it to vManage and vSmart. It never forms lasting OMP sessions or carries route and policy information.
How does vSmart differ from vManage in this question?
vManage is the management and orchestration GUI/REST layer for templates, monitoring, and reporting. vSmart is the control-plane node that peers with Edges via OMP and distributes routes and policies.
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