I have 3 routers connected over FR, R2 is hub while R1 and R3 are remote sites. configuration showed as the follwoing:
R2#sh run
Building configuration...
interface Serial0.1 multipoint
ip address 172.16.123.2 255.255.255.248
no ip route-cache
ip ospf network non-broadcast
ip ospf priority 5
no ip mroute-cache
frame-relay map ip 172.16.123.1 321 broadcast
frame-relay map ip 172.16.123.3 323 broadcast
no frame-relay inverse-arp
router ospf 100
log-adjacency-changes
network 172.16.123.0 0.0.0.15 area 0
R1#sh run
interface Serial0
ip address 172.16.123.1 255.255.255.248
encapsulation frame-relay
no ip route-cache
ip ospf priority 0
frame-relay map ip 172.16.123.2 102 broadcast
frame-relay map ip 172.16.123.3 102 broadcast
no frame-relay inverse-arp
router ospf 100
log-adjacency-changes
network 172.16.123.0 0.0.0.15 area 0
R3#sh run
interface Serial0
ip address 172.16.123.3 255.255.255.248
encapsulation frame-relay
no ip route-cache
ip ospf priority 0
no ip mroute-cache
frame-relay map ip 172.16.123.1 132 broadcast
frame-relay map ip 172.16.123.2 132 broadcast
no frame-relay inverse-arp
router ospf 100
log-adjacency-changes
network 172.16.123.0 0.0.0.15 area 0
And I did check the OSPF network type, they are all NON_BROADCAST:
R2:
Serial0.1 is up, line protocol is up
Internet Address 172.16.123.2/29, Area 0
Process ID 100, Router ID 192.168.2.2, Network Type NON_BROADCAST, Cost: 64
Transmit Delay is 1 sec, State DR, Priority 5
Designated Router (ID) 192.168.2.2, Interface address 172.16.123.2
No backup designated router on this network
Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
----------------------
R1#sh ip ospf int s0
Serial0 is up, line protocol is up
Internet Address 172.16.123.1/29, Area 0
Process ID 100, Router ID 192.168.1.1, Network Type NON_BROADCAST, Cost: 64
Transmit Delay is 1 sec, State DROTHER, Priority 0
Designated Router (ID) 192.168.2.2, Interface address 172.16.123.2
----------------------
R3#sh ip ospf int s0
Serial0 is up, line protocol is up
Internet Address 172.16.123.3/29, Area 0
Process ID 100, Router ID 192.168.3.3, Network Type NON_BROADCAST, Cost: 64
Transmit Delay is 1 sec, State DROTHER, Priority 0
Designated Router (ID) 192.168.2.2, Interface address 172.16.123.2
No backup designated router on this network
----------------------
Since they are all running as NON_BROADCAST type, so I add the command
"neighbor 172.16.123.2" in the OSPF router process on R1
"neighbor 172.16.123.2" in the OSPF router process on R3
"neighbor 172.16.123.1
neighbor 172.16.123.3" in the OSPF router process on R2
but when I did show run, I cannot see these neighbor X.X.X.X command.
Another problem is I want to make R2 as DR, so I configured "ip ospf priority 5" on the interface s0.1, but not work.
can someone give me soem advise?
Can someone explain to me?
Many thanks!
