3-tier design/OSPFConfig
From Teknologisk videncenter
Example of a core switch
HQC1#<input>show run</input>
Building configuration...
Current configuration : 1833 bytes
!
<notice><-- output omitted --></notice>
!
<notice>ip routing</notice>
!
<notice>router ospf 1
log-adjacency-changes
network 10.0.0.0 0.0.0.3 area 0
network 10.0.0.4 0.0.0.3 area 0
network 10.0.1.0 0.0.0.3 area 0
network 10.0.1.4 0.0.0.3 area 0
network 10.0.1.8 0.0.0.3 area 0
network 10.0.1.12 0.0.0.3 area 0</notice>
!
HQC1#<input>show ip ospf neighbor</input>
Neighbor ID Pri State Dead Time Address Interface
80.112.80.10 1 <notice>FULL/DR</notice> 00:00:34 10.0.0.2 FastEthernet0/1
10.255.0.1 1 <notice>FULL/DR</notice> 00:00:34 10.0.0.6 FastEthernet0/2
172.16.99.1 1 <notice>FULL/DR</notice> 00:00:34 10.0.1.2 FastEthernet0/3
172.16.99.2 1 <notice>FULL/DR</notice> 00:00:38 10.0.1.6 FastEthernet0/4
172.16.199.1 1 <notice>FULL/DR</notice> 00:00:33 10.0.1.10 FastEthernet0/5
172.16.199.2 1 <notice>FULL/DR</notice> 00:00:33 10.0.1.14 FastEthernet0/6
HQC1#<input>show ip route ospf</input>
10.0.0.0/8 is variably subnetted, 17 subnets, 2 masks
O 10.0.0.8 [110/2] via 10.0.0.2, 00:36:51, FastEthernet0/1
O 10.0.0.12 [110/2] via 10.0.0.6, 00:36:51, FastEthernet0/2
O 10.0.2.0 [110/2] via 10.0.1.2, 00:36:51, FastEthernet0/3
O 10.0.2.4 [110/2] via 10.0.1.6, 00:12:32, FastEthernet0/4
O 10.0.2.8 [110/2] via 10.0.1.10, 00:36:51, FastEthernet0/5
O 10.0.2.12 [110/2] via 10.0.1.14, 00:36:51, FastEthernet0/6
O 10.1.255.0 [110/1001] via 10.0.0.2, 00:36:51, FastEthernet0/1
O E1 10.2.0.0 [110/22] via 10.0.0.6, 00:35:47, FastEthernet0/2
O E1 10.2.0.4 [110/22] via 10.0.0.6, 00:35:47, FastEthernet0/2
O 10.2.255.0 [110/1001] via 10.0.0.2, 00:36:51, FastEthernet0/1
O 10.255.0.0 [110/2] via 10.0.0.6, 00:36:51, FastEthernet0/2
<notice> 172.16.0.0/24 is subnetted, 6 subnets
O IA 172.16.10.0 [110/2] via 10.0.1.2, 00:36:41, FastEthernet0/3
[110/2] via 10.0.1.6, 00:12:32, FastEthernet0/4
O IA 172.16.20.0 [110/2] via 10.0.1.2, 00:36:41, FastEthernet0/3
[110/2] via 10.0.1.6, 00:12:32, FastEthernet0/4
O IA 172.16.99.0 [110/2] via 10.0.1.2, 00:36:41, FastEthernet0/3
[110/2] via 10.0.1.6, 00:12:32, FastEthernet0/4
O IA 172.16.110.0 [110/2] via 10.0.1.10, 00:36:51, FastEthernet0/5
[110/2] via 10.0.1.14, 00:36:41, FastEthernet0/6
O IA 172.16.120.0 [110/2] via 10.0.1.10, 00:36:51, FastEthernet0/5
[110/2] via 10.0.1.14, 00:36:41, FastEthernet0/6
O IA 172.16.199.0 [110/2] via 10.0.1.10, 00:36:51, FastEthernet0/5
[110/2] via 10.0.1.14, 00:36:41, FastEthernet0/6</notice>
172.18.0.0/24 is subnetted, 3 subnets
O E1 172.18.10.0 [110/22] via 10.0.0.6, 00:35:47, FastEthernet0/2
O E1 172.18.20.0 [110/22] via 10.0.0.6, 00:35:47, FastEthernet0/2
O E1 172.18.99.0 [110/22] via 10.0.0.6, 00:35:47, FastEthernet0/2
HQC1#Distribution switch
router ospf 1
log-adjacency-changes
passive-interface Vlan10
passive-interface Vlan20
passive-interface Vlan99
network 10.0.1.0 0.0.0.3 area 0
network 10.0.2.0 0.0.0.3 area 0
network 172.16.10.0 0.0.0.255 area 1
network 172.16.20.0 0.0.0.255 area 1
network 172.16.99.0 0.0.0.255 area 1Distribution switches in Block 1 should use area 1 and Block 2 should use area 2