=~=~=~=~=~=~=~=~=~=~=~= PuTTY log 2024.04.27 20:13:27 =~=~=~=~=~=~=~=~=~=~=~=
show ip ospf ne  inte brief
Interface    PID   Area            IP Address/Mask    Cost  State Nbrs F/C
Fa0/0        10    13              10.1.21.1/24       1     BDR   1/1
Fa0/1        10    13              10.1.13.1/24       1     BDR   1/1
R1#show ip ospf neigh

Neighbor ID     Pri   State           Dead Time   Address         Interface
10.1.24.2         1   FULL/DR         00:00:31    10.1.21.2       FastEthernet0/0
10.1.23.3         1   FULL/DR         00:00:30    10.1.13.3       FastEthernet0/1
R1#show ip route 20.20.20.0
Routing entry for 20.20.20.0/24
  Known via "ospf 10", distance 110, metric 20, type extern 2, forward metric 1
  Last update from 10.1.21.2 on FastEthernet0/0, 00:05:35 ago
  Routing Descriptor Blocks:
  * 10.1.21.2, from 10.1.24.2, 00:05:35 ago, via FastEthernet0/0
      Route metric is 20, traffic share count is 1

R1#show ip route 20.20.20.0          
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

     20.0.0.0/24 is subnetted, 1 subnets
O E2    20.20.20.0 [110/20] via 10.1.21.2, 00:05:39, FastEthernet0/0
     10.0.0.0/24 is subnetted, 3 subnets
C       10.1.13.0 is directly connected, FastEthernet0/1
O IA    10.1.23.0 [110/11] via 10.1.21.2, 00:05:39, FastEthernet0/0
                  [110/11] via 10.1.13.3, 00:05:49, FastEthernet0/1
C       10.1.21.0 is directly connected, FastEthernet0/0
R1#