300-415 · Question #120
Refer to the exhibit. The network administrator has configured a centralized topology policy that results in the displayed routing table at a branch office. Which two configurations are verified by…
The correct answer is B. The default route is learned via OMP. C. This routing table is from a cEdge router. The routing table output from a branch office, likely from a cEdge router, verifies that the default route (0.0.0.0/0) is learned via OMP.
Question
Options
- AThe routing table is for the transport VPN.
- BThe default route is learned via OMP.
- CThis routing table is from a cEdge router.
- DThe default route is configured locally.
- EThe configured policy is adding a route tag of 300 to learned routes.
How the community answered
(19 responses)- A5% (1)
- B84% (16)
- D11% (2)
Why each option
The routing table output from a branch office, likely from a cEdge router, verifies that the default route (0.0.0.0/0) is learned via OMP.
Routing tables are typically viewed for service VPNs (e.g., VPN 1-65535) where user data resides, not primarily for the transport VPN (VPN 0) which handles underlay connectivity and control plane communication.
In Cisco SD-WAN, WAN Edge devices, including cEdge routers, commonly receive their default route (0.0.0.0/0) from the vSmart controller via the Overlay Management Protocol (OMP). This is a standard method for guiding traffic out to the internet or corporate data center.
The exhibit (implied) shows a routing table that is consistent with the output format of a Cisco IOS XE device, identifying it as a cEdge router rather than a vEdge router, which would have a different CLI output style.
If the default route were configured locally on the device, its source and administrative distance would typically differ from an OMP-learned route, which is implicitly not the case given option B is correct.
Without the actual exhibit, there is no information in the question that supports the conclusion that a route tag of 300 is being added by a configured policy.
Concept tested: SD-WAN routing table interpretation (cEdge, OMP default route)
Source: https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/sdwan-xe-gs-book/sdwan-gs-introduction.html
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