300-410 ENARSI: Implementing Cisco Enterprise Advanced Routing and Services

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QuestionQ14

Layer 3 Technologies

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Refer to the exhibit. A network administrator uses the DNA Assurance Dashboard panel to troubleshoot a failed OSPF adjacency between Edge_NYC interface GigabitEthernet1/3 and neighbor Edge_SNJ. The administrator sees that the neighborship is stuck in the exstart state.

How should the administrator resolve this issue?

Explanation

An OSPF neighbor that remains in ExStart cannot complete Database Description packet exchange. A mismatch between the interfaces’ MTU settings causes the router receiving a Database Description packet with an unacceptable advertised MTU to ignore it, so the adjacency does not progress. The interface MTUs must match.

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