Routing OSPF Single area

Routing OSPF Single area

R1#
R1#
interface Loopback0
 ip address 192.168.10.254 255.255.255.0
!
interface FastEthernet0/0
 ip address 10.1.1.1 255.255.255.0
 duplex auto
 speed auto

router ospf 1
 log-adjacency-changes
 network 10.1.1.0 0.0.0.255 area 0.0.0.0
 network 192.168.10.0 0.0.0.255 area 0.0.0.0
!

R1#

R2#
R2#

interface Loopback0
 ip address 192.168.1.126 255.255.255.128
!
interface FastEthernet0/0
 ip address 10.1.1.2 255.255.255.0
 duplex auto
 speed auto

router ospf 1
 log-adjacency-changes
 network 10.1.1.0 0.0.0.255 area 0.0.0.0
 network 192.168.1.0 0.0.0.127 area 0.0.0.0
!
R2#
R2#


R3#
R3#
interface Loopback0
 ip address 192.168.1.254 255.255.255.128
!
interface FastEthernet0/0
 ip address 10.1.1.3 255.255.255.0
 duplex auto
 speed auto
!

router ospf 1
 log-adjacency-changes
 network 10.1.1.0 0.0.0.255 area 0.0.0.0
 network 192.168.1.128 0.0.0.127 area 0.0.0.0
!
R3#
R3#

//-----------------------------------------------------//

R1#
R1#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

C    192.168.10.0/24 is directly connected, Loopback0
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0
     192.168.1.0/32 is subnetted, 2 subnets
O       192.168.1.126 [110/11] via 10.1.1.2, 05:12:51, FastEthernet0/0
O       192.168.1.254 [110/11] via 10.1.1.3, 05:11:25, FastEthernet0/0
R1#

R1#sh ip ospf nei

Neighbor ID     Pri   State           Dead Time   Address         Interface
192.168.1.126     1   FULL/BDR        00:00:32    10.1.1.2        FastEthernet0/0
192.168.1.254     1   FULL/DROTHER    00:00:34    10.1.1.3        FastEthernet0/0
R1#
R1#


R2#
R2#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

     192.168.10.0/32 is subnetted, 1 subnets
O       192.168.10.254 [110/11] via 10.1.1.1, 05:15:20, FastEthernet0/0
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0
     192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C       192.168.1.0/25 is directly connected, Loopback0
O       192.168.1.254/32 [110/11] via 10.1.1.3, 05:13:52, FastEthernet0/0
R2#
R2#
R2#sh ip ospf nei

Neighbor ID     Pri   State           Dead Time   Address         Interface
192.168.1.254     1   FULL/DROTHER    00:00:39    10.1.1.3        FastEthernet0/0
192.168.10.254    1   FULL/DR         00:00:33    10.1.1.1        FastEthernet0/0
R2#


R3#sh ip route
Codes: C - connected, S - static, R - RIP, M - mobile, B - BGP
       D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
       N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
       E1 - OSPF external type 1, E2 - OSPF external type 2
       i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
       ia - IS-IS inter area, * - candidate default, U - per-user static route
       o - ODR, P - periodic downloaded static route

Gateway of last resort is not set

     192.168.10.0/32 is subnetted, 1 subnets
O       192.168.10.254 [110/11] via 10.1.1.1, 05:18:34, FastEthernet0/0
     10.0.0.0/24 is subnetted, 1 subnets
C       10.1.1.0 is directly connected, FastEthernet0/0
     192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
O       192.168.1.126/32 [110/11] via 10.1.1.2, 05:18:34, FastEthernet0/0
C       192.168.1.128/25 is directly connected, Loopback0
R3#
R3#
R3#sh ip ospf nei

Neighbor ID     Pri   State           Dead Time   Address         Interface
192.168.1.126     1   FULL/BDR        00:00:39    10.1.1.2        FastEthernet0/0
192.168.10.254    1   FULL/DR         00:00:33    10.1.1.1        FastEthernet0/0
R3#