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Network Intermediate NETWORK-041 · 21 min

OSPF neighbors stay in EXSTART

무료
시나리오

Both routers can ping each other, but adjacency never reaches full because one side advertises a different interface MTU on the same link.

먼저 볼 것
  • Identify the primary failure signal in the Routing Adjacency scenario.
  • Separate visible symptoms from the underlying technical dependency.
  • Describe the safest recovery path and the follow-up prevention work.
점검 체크리스트
  1. Summarize the current impact and the last known change.
  2. Collect direct evidence from logs, runtime state, and configuration before changing anything.
  3. Separate immediate recovery from permanent prevention work.
복구와 재발 방지

Choose the smallest safe recovery action first, then record the prevention work that reduces repeat incidents.

같이 보면 좋은 질문
Why is EXSTART a valuable exam clue?

It tells you the routing peers can already see each other, so the next step is protocol negotiation detail like MTU, not basic connectivity.