Refer to the exhibit. What can be concluded from the output of the debug command?
A.
A router is connected to interface Serial0/3 of the Border router. The OSPF router ID of the
connected router is the IP address of the connected interface.
B.
The output represents normal OSPF operation.
C.
The OSPF router connected to interface Serial0/1 has NOT formed a neighbor relationship with
the Border router.
D.
The interfaces of two OSPF routers connected to the Border router are in the same subnet.
Explanation:
This ” debug ip ospf events” output shown might appear if any of the following situations occurs:
The IP subnet masks for routers on the same network do not match. The OSPF hello interval for
the router does not match that configured for a neighbor. The OSPF dead interval for the router
does not match that configured for a neighbor.
If a router configured for OSPF routing is not seeing an OSPF neighbor on an attached network,
perform the following tasks: Make sure that both routers have been configured with the same IP
mask, OSPF hello interval, and OSPF dead interval. Make sure that both neighbors are part of the
same area type.