Prerequisites: CCNP level skills.
Topology
Pic. 1 - OSPF Topology.
Icons designed by: Andrzej Szoblik - http://www.newo.pl
R3 does not get full adjacency with a newly connected switch to its F1/0 interface. Debug shows problems with MTU (switch uses 1512 bytes as per 'show system mtu'). Which command can resolve the issue on R3's F1/0 interface?
Task 2
R2 is connected to an ISP and started to generate LSA Type 6 (MOSPF) errors. Make sure R2 does not generate these messages.
Task 3
Configure R2 so it provides the following output (name 'R1' instead of 1.1.1.1):
Pic. 2 - OSPF Output on R2.
Pic. 3 - OSPF Output on R2.
Lab Solution
R3 does not get full adjacency with a newly connected switch to its F1/0 interface. Debug shows problems with MTU (switch uses 1512 bytes as per 'show system mtu'). Which command can resolve the issue on R3's F1/0 interface?
R3 Configuration:
!
interface FastEthernet1/0
ip ospf mtu-ignore
ip ospf mtu-ignore
!
Task 2
R2 is connected to an ISP and started to generate LSA Type6 (MOSPF) errors. Make sure R2 does not generate these messages.
R2 Configuration:
!
router ospf 1
router-id 2.2.2.2
ignore lsa mospf
log-adjacency-changes
network 10.1.12.2 0.0.0.0 area 0
network 172.16.102.2 0.0.0.0 area 0
router-id 2.2.2.2
ignore lsa mospf
log-adjacency-changes
network 10.1.12.2 0.0.0.0 area 0
network 172.16.102.2 0.0.0.0 area 0
!
Task 3
Configure R2 so it provides the following output (name 'R1' instead of 1.1.1.1):
R2 Configuration:
!
ip host R1 1.1.1.1
ip ospf name-lookup
!
