OSPF Section Topology
- 1. If you get the following when connecting Serial Connection: Restart GNS3. Setting up OSPF R1: conf t interface S0/0 ip address 10.0.1.1 255.255.255.0 no shutdown end R2: conf t interface S0/0 ip address 10.0.1.2 255.255.255.0 no shutdown
- 2. end conf t interface Fa0/1 ip address 10.0.0.2 255.255.255.0 no shutdown end R3: conf t interface Fa0/0 ip address 10.0.0.3 255.255.255.0 no shutdown end conf t interface Fa0/1 ip address 10.0.2.3 255.255.255.0 no shutdown end R4: conf t interface Fa0/0 ip address 10.0.2.4 255.255.255.0 no shutdown end PC1: ifconfig eth0 10.0.0.1/24 Test connectivity: R1: ping 10.0.1.2 R2: ping 10.0.0.3 R3: ping 10.0.2.4 PC1: ping c2 10.0.0.2 Setting up OSPF R1: conf t no ip routing ip routing router ospf 1 network 10.0.0.0 0.0.255.255 area 1 end show ip ospf R2: conf t
- 3. no ip routing ip routing router ospf 1 network 10.0.0.0 0.0.255.255 area 1 end show ip ospf R3: conf t no ip routing ip routing router ospf 1 network 10.0.0.0 0.0.255.255 area 1 end show ip ospf R4: conf t no ip routing ip routing router ospf 1 network 10.0.0.0 0.0.255.255 area 1 end show ip ospf PC1: /etc/rc.d/init.d/zebra start /etc/rc.d/init.d/ospfd start telnet localhost 2604 pw = rootroot enable conf t router ospf network 10.0.0.0/16 area 1 routerid 10.0.0.1 no passive eth0 end show ip ospf Test connectivity: R1: ping 10.0.2.4 PC1: ping c2 10.0.1.1 PC1: ping c2 10.0.2.4 PC1: route Now OSPF is enabled on our network we should see how long it takes to converge. 1. On PC1 indefinite ping to R1
- 4. 2. R1R2 disconnect serial 3. R1R2 reconnect serial 4. Stop ping once connection is back a. count the number of misses (1 second each) Setting up Areas: R1: conf t router ospf 1 no network 10.0.0.0 0.0.255.255 area 1 network 10.0.1.0 0.0.0.255 area 1 end R2: conf t router ospf 1 no network 10.0.0.0 0.0.255.255 area 1 network 10.0.1.0 0.0.0.255 area 1 network 10.0.0.0 0.0.0.255 area 0 end R3: conf t router ospf 1 no network 10.0.0.0 0.0.255.255 area 1 network 10.0.0.0 0.0.0.255 area 0 network 10.0.2.0 0.0.0.255 area 2 end
- 5. R4: conf t router ospf 1 no network 10.0.0.0 0.0.255.255 area 1 network 10.0.2.0 0.0.0.255 area 2 end R1R4: clear ip ospf 1 process PC1: conf t router ospf no network 10.0.0.0/16 area 1 network 10.0.0.0/24 area 0 end Wait some time.....