OSPF single area configuration
In order to make up for the shortcomings of distance vector routing protocols, IEFI developed a link-state-based internal gateway protocol, OSPF.
Experimental environment: red, green and blue represent the office space of three different networks, which requires the use of OSPF protocol to achieve network interworking.
Pc1:172.16.1.1
Pc2:172.16.2.1
Pc3:172.16.3.1
R1:GE0/0/0 172.16.1.254 GE2/0/0 192.168.2.1 GE0/0/1 192.168.1.1
R2:GE0/0/0 172.16.2.254 GE0/0/1 192.168.2.3 GE2/0/0 192.168.2.3
R3:GE0/0/0 172.16.3.254 GE0/0/1 192.168.1.3 GE2/0/0 192.168.3.3
Configure PC ip addr
Configure the router
R1:
[R1] INT GigabitEthernet0/0/0 [R1-GigabitEthernet0/0/0] IP ADD 172.16.1.254 24May 21 2020 10:38:30-08:00 R1% IFNET/4/LINK_STATE (l) [0]: The line protocol IP on the interface GigabitEthernet0/0/0 has entered the UP state. [R1-GigabitEthernet0/0/0] INT G2 24May 0 [R1-GigabitEthernet2/0/0] IP ADD 192.168.2.1 24May 21 2020 10:38:48-08:00 R1% IFNET/4/LINK_STATE (l) [1]: The line protocol IP on the interface GigabitEthernet2/0/0 has entered the UP state. [R1-GigabitEthernet2/0/0] INT G0 IFNET/4/LINK_STATE 0 R1-GigabitEthernet2/0/0 1 [R1-GigabitEthernet0/0/1] IP ADD 192.168.1.1 24 [R1-GigabitEthernet0/0/1] May 21 2020 10:39:03-08:00 R1% IFNET/4/LINK_STATE (l) [2]: The line protocol IP on the interface GigabitEthernet0/0/1 has entered the UP state.
R2:
[R2] int g0 IFNET/4/LINK_STATE 0 int 1 [R2-GigabitEthernet0/0/1] ip add 192.168.2.2 24May 21 2020 10:40:28-08:00 R2% IFNET/4/LINK_STATE (l) [0]: The line protocol IP on the interface GigabitEthernet0/0/1 has entered the UP state. [R2-GigabitEthernet0/0/1] int g2rampany 0 [R2-GigabitEthernet2/0/0] ip add 192.168.3.2 24May 21 2020 10:40:39-08:00 R2% IFNET/4/LINK_STATE (l) [1]: The line protocol IP on the interface GigabitEthernet2/0/0 has entered the UP state. [R2-GigabitEthernet2/0/0] int g0 24May 0 [R2-GigabitEthernet0/0/0] ip add 172.16.2.254 24May 21 2020 10:40:57-08:00 R2% IFNET/4/LINK_STATE (l) [2]: The line protocol IP on the interface GigabitEthernet0/0/0 has entered the UP state.
R3:
[R3] int GigabitEthernet0/0/0 [R3-GigabitEthernet0/0/0] ip add 172.16.3.254 24May 21 2020 10:42:11-08:00 R3% IFNET/4/LINK_STATE (l) [0]: The line protocol IP on the interface GigabitEthernet0/0/0 has entered the UP state. [R3-GigabitEthernet0/0/0] int g0 IFNET/4/LINK_STATE 0 R3-GigabitEthernet0/0/0 1 [R3-GigabitEthernet0/0/1] ip add 192.168.1.3 24May 21 2020 10:42:21-08:00 R3% IFNET/4/LINK_STATE (l) [1]: The line protocol IP on the interface GigabitEthernet0/0/1 has entered the UP state. [R3-GigabitEthernet0/0/1] int G2 IFNET/4/LINK_STATE 0 [R3-GigabitEthernet2/0/0] ip add 192.168.3.3 24May 21 2020 10:42:51-08:00 R3% IFNET/4/LINK_STATE (l) [2]: The line protocol IP on the interface GigabitEthernet2/0/0 has entered the UP state. [R3-GigabitEthernet2/0/0] configure OSPF
R1:
[R1] OSPF 1 [R1-ospf-1] AREA 0 [R1-ospf-1-area-0.0.0.0] NETWORK 172.16.1.0 0.0.0.255 [R1-ospf-1-area-0.0.0.0] NETWORK 192.168.2.0 0.0.0.255 [R1-ospf-1-area-0.0.0.0] NETWORK 192.168.1.0 0.0.0.255
R2:
[R2] OSPF 1 [R2-ospf-1] AREA 0 [R2-ospf-1-area-0.0.0.0] NETWO [R2-ospf-1-area-0.0.0.0] network 172.16.2.0 0.0.0.255 [R2-ospf-1-area-0.0.0.0] NETWORK 192.168.2.0 0.0.0.255 [R2-ospf-1-area-0.0.0.0] NETWORK 192.168.3.0 0.0.0.255
R3:
[R3] OSPF 1 [R3-ospf-1] AREA 0 [R3-ospf-1-area-0.0.0.0] NETWORK 172.16.3.0 0.0.255 [R3-ospf-1-area-0.0.0.0] NETWORK 192.168.1.0 0.0.255 [R3-ospf-1-area-0.0.0.0] NETWORK 192.168.3.0 0.0.0.255 Test pc1 ping pc2,pc3
In this way, OSPF configuration is complete!
Original address: https://www.linuxprobe.com/ospf-ensp.html
