Cisco
200-301 · Question #226
Refer to the exhibit. Which configuration issue is preventing the OSPF neighbor relationship from being established between the two routers?
The correct answer is C. R1 interface Gi1/0 has a larger MTU size. If the Interface MTU field in the Database Description packet indicates an IP datagram size that is larger than the router can accept on the receiving interface without fragmentation, the Database Description packet is rejected.
Submitted by cyberguy42· Mar 5, 2026IP Connectivity
Question
Refer to the exhibit. Which configuration issue is preventing the OSPF neighbor relationship from being established between the two routers?
Exhibits
Options
- AR1 has an incorrect network command for interface Gi1/0.
- BR2 should have its network command in area 1.
- CR1 interface Gi1/0 has a larger MTU size.
- DR2 is using the passive-interface default command.
How the community answered
(50 responses)- A20% (10)
- B10% (5)
- C66% (33)
- D4% (2)
Explanation
If the Interface MTU field in the Database Description packet indicates an IP datagram size that is larger than the router can accept on the receiving interface without fragmentation, the Database Description packet is rejected.
Topics
#OSPF#OSPF neighbor#OSPF troubleshooting#MTU mismatch
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