The company and the company network have both been growing rapidly. Multiple adds, moves
and changes have been applied to the network. Your boss has asked you to troubleshoot a recent
OSPF synchronization problem that has arisen. There have been synchronization problems at
separate locations in the OSPF area 0. There have been reported link failures during the rapid
growth of the company network. You are required to resolve the OSPF problem. OSPF must be
able to converge when the network changes.
Refer to the information above to answer the following question.
The R2 router has lost connectivity to R1. The following is R1s current route table:
Which expected route is missing from R1s route table based on the topology during the
maintenance period?
A.
o 172.16.0.0 [110/2] via 10.138.43.1, 00:00:09, FastEthernet0/0
B.
o IA 9.152.105.122 [110/3] via 10.138.43.1, 00:00:09, FastEthernet0/0
C.
o IA 10.138.0.0 [110/3] via 10.138.43.1, 00:00:09, FastEthernet0/0
D.
o IA 10.249.0.0 [110/2] via 10.138.43.1, 00:00:09, FastEthernet0/0
E.
o IA 4.249.113.59 [110/2] via 10.138.43.1, 00:00:09, FastEthernet0/0
F.
o 8.187.175.82 [110/3] via 10.138.43.1, 00:00:09, FastEthernet0/0
Explanation:
0 8.287.175.82 [110/3] is not to be seen in the R1 current route table
which means it has lost connectivity via 10.138.43.1. Also 10.0.0.0/30 has only 1 subnet.
Can someone explain why E is not the correct answer? Since it’s the switch’s loopback and not R1’s loopback, I would expect that to also show up in the routing table.
I see F is not there either, but I would think in this situation, E would be the “more correct” answer.