Refer to the exhibit. EIGRP has been configured on all links. The spoke nodes have been configured as EIGRP stubs, and the WAN links to R3 have higher bandwidth and lower delay than the WAN links to R4. When a link failure occurs at the R1-R2 link, what happens to traffic on R1 that is destined for a subnet attached to R2?
A. R1 has no route to R2 and drops the traffic
B. R1 load-balances across the paths through R3 and R4 to reach R2
C. R1 forwards the traffic to R3, but R3 drops the traffic
D. R1 forwards the traffic to R3 in order to reach R2
Correct answer is A
Stub Routers don´t advertise routes learned from others, therefore R3 knows the routes to R1 and R2 but would never advertise this information to each other. I have validate this behavior once again by myself in my lab device lab. Right answer is definitely A.
A. R1 has no route to R2 and drops the traffic