An engineer needs dynamic routing between two routers and is unable to establish OSPF adjacency. The output of the show ip ospf neighbor command shows that the neighbor state is EXSTART/EXCHANGE.
Which action should be taken to resolve this issue?
An engineer needs dynamic routing between two routers and is unable to establish OSPF adjacency. The output of the show ip ospf neighbor command shows that the neighbor state is EXSTART/EXCHANGE.
Which action should be taken to resolve this issue?
When the OSPF neighbor state is stuck in EXSTART/EXCHANGE, it is often due to a mismatch in the MTU settings on the interfaces of the routers involved. If one router is attempting to send packets larger than the MTU size configured on the neighboring router, the receiving router will ignore these packets, preventing proper OSPF adjacency. Ensuring that the MTU settings match on both routers' interfaces should resolve this issue.
The given answer is correct
The given answer is correct
Neighbors Stuck in Exstart/Exchange State The problem occurs most frequently when you attempt to run OSPF between a Cisco router and another vendor router. The problem occurs when the maximum transmission unit (MTU) settings for neighboring router interfaces do not match. If the router with the higher MTU sends a packet larger that the MTU set on the neighboring router, the neighbor router ignores the packet. https://www.cisco.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/13684-12.html#toc-hId--1468454237
C is correct