Refer to the exhibit. An attacker can advertise OSPF fake routes from 172.16.20.0 network to the OSPF domain and black hole traffic. Which action must be taken to avoid this attack and still be able to advertise this subnet into OSPF?

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Admin Staff asked 10 months ago


Refer to the exhibit. An attacker can advertise OSPF fake routes from 172.16.20.0 network to the OSPF domain and black hole traffic. Which action must be taken to avoid this attack and still be able to advertise this subnet into OSPF?

A. configure 172.16.20.0 as a stub network.

B. configure graceful restart on the 172.16.20.0 interface.

C. configure a passive interface on R2 toward 172.16.20.0.

D. Apply a policy to filter OSPF packets on R2.










Correct Answer: D

This question is in 350-401 Implementing Cisco Enterprise Network Core Technologies (ENCOR) Exam exam
For getting CCNP Enterprise Certificate

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