Cisco Related Exams
300-510 Exam

Refer to the exhibit. A network engineer just replaced five routers on this OSPF network. When the routing protocol is brought up, R5 cannot reach routes that originate on R1. The engineer verified that all connected links have established neighbor relationships. R5 reaches routes originating on R3 and R4. Which action resolves the issue?
What are two features of dual-stack? (Choose two.)
For which reason can two devices fail to establish an OSPF neighbor relationship?