David Sudjiman

• Partial-mesh or star network topology.
• One IP Subnet.
• Hello Timer 30 seconds.
• Manual adjacency, no DR/BDR elected.

R1#sh run int s1/0
Building configuration...

Current configuration : 287 bytes
!
interface Serial1/0
 ip address 192.168.1.1 255.255.255.0
 encapsulation frame-relay
 ip ospf network point-to-multipoint non-broadcast
 serial restart-delay 0
 frame-relay map ip 192.168.1.2 102 broadcast
 frame-relay map ip 192.168.1.3 103 broadcast
 no frame-relay inverse-arp
end

R1#sh run | s router ospf
router ospf 1
 log-adjacency-changes
 network 1.1.1.1 0.0.0.0 area 0
 network 192.168.1.0 0.0.0.255 area 0
 neighbor 192.168.1.3
 neighbor 192.168.1.2
R1#sh ip ospf nei

Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           0   FULL/  -        00:01:49    192.168.1.3     Serial1/0
2.2.2.2           0   FULL/  -        00:01:33    192.168.1.2     Serial1/0
R1#sh ip ospf int s1/0
Serial1/0 is up, line protocol is up
  Internet Address 192.168.1.1/24, Area 0
  Process ID 1, Router ID 1.1.1.1, Network Type POINT_TO_MULTIPOINT, Cost: 64
  Transmit Delay is 1 sec, State POINT_TO_MULTIPOINT,
  Timer intervals configured, Hello 30, Dead 120, Wait 120, Retransmit 5
    oob-resync timeout 120
    Hello due in 00:00:12
  Supports Link-local Signaling (LLS)
  Index 2/2, flood queue length 0
  Next 0×0(0)/0×0(0)
  Last flood scan length is 1, maximum is 1
  Last flood scan time is 0 msec, maximum is 4 msec
  Neighbor Count is 2, Adjacent neighbor count is 2
    Adjacent with neighbor 3.3.3.3
    Adjacent with neighbor 2.2.2.2
  Suppress hello for 0 neighbor(s)

R2#sh run int
*Mar  1 03:18:35.475: %SYS-5-CONFIG_I: Configured from console by console s1/0
Building configuration...

Current configuration : 287 bytes
!
interface Serial1/0
 ip address 192.168.1.2 255.255.255.0
 encapsulation frame-relay
 ip ospf network point-to-multipoint non-broadcast
 serial restart-delay 0
 frame-relay map ip 192.168.1.1 201 broadcast
 frame-relay map ip 192.168.1.3 203 broadcast
 no frame-relay inverse-arp
end

R2#sh run | s router ospf
router ospf 1
 log-adjacency-changes
 network 2.2.2.2 0.0.0.0 area 0
 network 192.168.1.0 0.0.0.255 area 0
 neighbor 192.168.1.3
 neighbor 192.168.1.1
R2#sh ip ospf nei

Neighbor ID     Pri   State           Dead Time   Address         Interface
3.3.3.3           0   FULL/  -        00:01:30    192.168.1.3     Serial1/0
1.1.1.1           0   FULL/  -        00:01:57    192.168.1.1     Serial1/0

R3#sh run int s1/0
Building configuration...

Current configuration : 287 bytes
!
interface Serial1/0
 ip address 192.168.1.3 255.255.255.0
 encapsulation frame-relay
 ip ospf network point-to-multipoint non-broadcast
 serial restart-delay 0
 frame-relay map ip 192.168.1.1 301 broadcast
 frame-relay map ip 192.168.1.2 302 broadcast
 no frame-relay inverse-arp
end

R3#sh run | s router ospf
router ospf 1
 log-adjacency-changes
 network 3.3.3.3 0.0.0.0 area 0
 network 192.168.1.0 0.0.0.255 area 0
 neighbor 192.168.1.1
 neighbor 192.168.1.2
R3#sh ip ospf nei

Neighbor ID     Pri   State           Dead Time   Address         Interface
1.1.1.1           0   FULL/  -        00:01:45    192.168.1.1     Serial1/0
2.2.2.2           0   FULL/  -        00:01:31    192.168.1.2     Serial1/0