OSPF Lab Issue

So, while doing an OSPF lab, ran into a little bit of an issue. I’ve got a 3 router setup , hub and spokes.  All routers have their loopbacks as their router#’s, e.g. R1’s loopback 1.1.1.1 /32 , and so on. All loopbacks are in different areas, e.g. loopback for Router 2 (2.2.2.2) in Area 2. All serial interfaces are in Area 0.
OSPF has been configured, and I can ping from R1<-> R2, R1<->R3, R2<-> R1, R3<-> R1 using their loopbacks, but I can ping R2 <-> R3 using their loopbacks.
Here’s my configs on all routers:

R1:

interface Loopback0
 ip address 1.1.1.1 255.255.255.255
!
interface Serial0/0
 ip address 172.12.123.1 255.255.255.0
 encapsulation frame-relay
 serial restart-delay 0
 frame-relay map ip 172.12.123.2 122 broadcast
 frame-relay map ip 172.12.123.3 123 broadcast

router ospf 1
 log-adjacency-changes
 network 1.1.1.1 0.0.0.0 area 1
 network 172.12.123.0 0.0.0.255 area 0
 neighbor 172.12.123.3
 neighbor 172.12.123.2
!
ip classless

R2:

interface Loopback0
 ip address 2.2.2.2 255.255.255.255
!
interface Serial0/0
 ip address 172.12.123.2 255.255.255.0
 encapsulation frame-relay
 ip ospf priority 0
 serial restart-delay 0
 frame-relay map ip 172.12.123.1 221 broadcast
!

router ospf 1
 log-adjacency-changes
 network 2.2.2.2 0.0.0.0 area 2
 network 172.12.123.0 0.0.0.255 area 0
!
ip classless

R3:

interface Loopback0
 ip address 3.3.3.3 255.255.255.255
!
interface Serial0/0
 ip address 172.12.123.3 255.255.255.0
 encapsulation frame-relay
 ip ospf priority 0
 serial restart-delay 0
 frame-relay map ip 172.12.123.1 321 broadcast
!
router ospf 1
 log-adjacency-changes
 network 3.3.3.3 0.0.0.0 area 3
 network 172.12.123.0 0.0.0.255 area 0
!
ip classless

Routing Tables on R1, R2 and R3:

 

R1’s Routing Table:
Gateway of last resort is not set

     1.0.0.0/32 is subnetted, 1 subnets
C       1.1.1.1 is directly connected, Loopback0
     2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/65] via 172.12.123.2, 00:12:35, Serial0/0
     3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/65] via 172.12.123.3, 00:12:35, Serial0/0
     172.12.0.0/24 is subnetted, 1 subnets
C       172.12.123.0 is directly connected, Serial0/0

R2’s routing table:

Gateway of last resort is not set

     1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/65] via 172.12.123.1, 00:14:44, Serial0/0
     2.0.0.0/32 is subnetted, 1 subnets
C       2.2.2.2 is directly connected, Loopback0
     3.0.0.0/32 is subnetted, 1 subnets
O IA    3.3.3.3 [110/65] via 172.12.123.3, 00:14:44, Serial0/0
     172.12.0.0/24 is subnetted, 1 subnets
C       172.12.123.0 is directly connected, Serial0/0

R3’s routing table:

Gateway of last resort is not set

     1.0.0.0/32 is subnetted, 1 subnets
O IA    1.1.1.1 [110/65] via 172.12.123.1, 00:15:49, Serial0/0
     2.0.0.0/32 is subnetted, 1 subnets
O IA    2.2.2.2 [110/65] via 172.12.123.2, 00:15:49, Serial0/0
     3.0.0.0/32 is subnetted, 1 subnets
C       3.3.3.3 is directly connected, Loopback0
     172.12.0.0/24 is subnetted, 1 subnets
C       172.12.123.0 is directly connected, Serial0/0

Trying to figure out why I can’t ping loopbacks from R2<->R3 and vice-versa.

EDIT: Figured it out. I forgot to put the statement:
ip ospf network point-to-multipoint
 on the s0/0 interfaces participating in the FR cloud. 

 

~ by brokenflea on May 4, 2009.