300-415 Question #430: Real Exam Question with Answer & Explanation

The correct answer is A: vrf definition 200 address-family ipv4 route-replicate from vrf global unicast bgp 100. The correct VRF route-replication syntax imports BGP routes from the global routing table into VRF 200, enabling connectivity between the two subnets.

Router Deployment

Question

Refer to the exhibit. Which configuration establishes connectivity between the 172.16.102.0/24 and the 192.168.0.0/24 subnet?

Options

Avrf definition 200 address-family ipv4 route-replicate from vrf global unicast bgp 100
Bvrf definition 200 address-family ipv4 route-replicate from vrf global unicast ospf 200
Cvrf definition 200 global-address-family ipv4 route-replicate from vrf global unicast ospf 200
Dvrf definition 200 global-address-family ipv4 route-replicate from vrf 200 unicast bgp 100

Explanation

The correct VRF route-replication syntax imports BGP routes from the global routing table into VRF 200, enabling connectivity between the two subnets.

Common mistakes.

B. This option specifies 'ospf 200' as the source protocol, but the exhibit shows the global routing table uses BGP 100, so OSPF routes would not produce the needed connectivity.
C. 'global-address-family ipv4' is not a valid IOS configuration keyword under 'vrf definition'; the correct keyword is 'address-family ipv4', making this command rejected by the parser.
D. Both the invalid 'global-address-family' keyword and the self-referential 'from vrf 200' source (replicating from VRF 200 into VRF 200) make this configuration syntactically and logically incorrect.

Concept tested. VRF route replication for inter-VRF connectivity

Reference. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_bgp/configuration/xe-16/irg-xe-16-book/bgp-vrf-route-leaking.html

Topics

#VRF#Route leaking#BGP#Router configuration

Community Discussion

No community discussion yet for this question.

Full 300-415 Practice