- Partial-mesh or star network topology.
- One IP Subnet.
- Hello Timer 30 seconds.
- Automatic adjacency, no DR/BDR elected.
R1#sh run int s1/0
Building configuration...
Current configuration : 273 bytes
!
interface Serial1/0
ip address 192.168.1.1 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
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
R1#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:01:36 192.168.1.2 Serial1/0
3.3.3.3 0 FULL/ - 00:01:32 192.168.1.3 Serial1/0
R1#debug ip ospf hello
OSPF hello events debugging is on
R1#
*Mar 1 02:50:50.839: OSPF: Rcv hello from 3.3.3.3 area 0 from Serial1/0 192.168.1.3
*Mar 1 02:50:50.843: OSPF: End of hello processing
*Mar 1 02:50:54.995: OSPF: Rcv hello from 2.2.2.2 area 0 from Serial1/0 192.168.1.2
*Mar 1 02:50:54.995: OSPF: End of hello processing
*Mar 1 02:50:57.883: OSPF: Send hello to 224.0.0.5 area 0 on Serial1/0 from 192.168.1.1
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 0x0(0)/0x0(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 2.2.2.2
Adjacent with neighbor 3.3.3.3
R2#sh run int s1/0
Building configuration...
Current configuration : 273 bytes
!
interface Serial1/0
ip address 192.168.1.2 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
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
R2#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
1.1.1.1 0 FULL/ - 00:01:59 192.168.1.1 Serial1/0
3.3.3.3 0 FULL/ - 00:01:53 192.168.1.3 Serial1/0
R3#sh run int s1/0
Building configuration...
Current configuration : 273 bytes
!
interface Serial1/0
ip address 192.168.1.3 255.255.255.0
encapsulation frame-relay
ip ospf network point-to-multipoint
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
R3#sh ip ospf nei
Neighbor ID Pri State Dead Time Address Interface
2.2.2.2 0 FULL/ - 00:01:32 192.168.1.2 Serial1/0
1.1.1.1 0 FULL/ - 00:01:35 192.168.1.1 Serial1/0
David Sudjiman 