PART 3: CONNECTIVITY BETWEEN THE SITES We now have connectivity between the devices connected to R1 and R2. In this section, you will establish connectivity between the sites and configure OSPF to enable routing between the two networks. 3.1. Configure interfaces connecting R1 and R2 First, you will interconnect the routers R1 and R2. Using the appropriate cable type, connect interface GigabitEthernet0/1 on one router to GigabitEthernet0/1 on the second router. Next, allocate IP addresses to R1 and R2. The network administrators assigned a network to be used for connectivity between the routers: 10.0.0.0 /30 Configure the interfaces using the table below: Device Interfaces IP Address Description R1 GigabitEthernet0/1 The first usable IP address on the 10.0.0.0 /30 network Connection to R2: Gi0/1 R2 GigabitEthernet0/1 The second usable IP address on the 10.0.0.0 /30 network Connection to R1: Gi0/1 Make sure both interfaces are not administratively down. 3.1.1. Test connectivity As an optional step, you can test connectivity between the devices. You should be able to ping between R1 and R2, between devices at the main site and the annex, but not between the devices from the different sites. For example, you cannot ping PC-A from the Annex-PC. If you run the show ip route command on one of the routers, you will notice that the routing table contains only the directly connected networks. You can configure static routers, but as the number of sites grows, the static routes will quickly become unmanageable. Our next step is to configure OSPF. 3.2. Configure OSPF In this section, you will configure OSPF on R1 and R2 using these parameters: · Configure OSPF using process id 100 (one hundred) · Use router ID: o R1: 1.1.1.1 o R2: 2.2.2.2 · Suppress routing OSPF updates on GigabitEthernet0/0 interface on both routers o There is no point in sending OSPF updates over the Gi0/0 interface since there are no other routers to process them. · Using the network command, add all directly connected networks to OSPF area 0 o The network address and the wildcard mask must match the network subnet exactly. 3.3. Verify connectivity By now, devices from both networks should be able to ping each other. Use ping, traceroute, and IOS commands to validate your connectivity; troubleshoot and correct any issues.PART 3: CONNECTIVITY BETWEEN THE SITES We now have connectivity between the devices connected to R1 and R2. In this section, you will establish connectivity between the sites and configure OSPF to enable routing between the two networks. 3.1. Configure interfaces connecting R1 and R2 First, you will interconnect the routers R1 and R2. Using the appropriate cable type, connect interface GigabitEthernet0/1 on one router to GigabitEthernet0/1 on the second router. Next, allocate IP addresses to R1 and R2. The network administrators assigned a network to be used for connectivity between the routers: 10.0.0.0 /30 Configure the interfaces using the table below: Device Interfaces IP Address Description R1 GigabitEthernet0/1 The first usable IP address on the 10.0.0.0 /30 network Connection to R2: Gi0/1 R2 GigabitEthernet0/1 The second usable IP address on the 10.0.0.0 /30 network Connection to R1: Gi0/1 Make sure both interfaces are not administratively down. 3.1.1. Test connectivity As an optional step, you can test connectivity between the devices. You should be able to ping between R1 and R2, between devices at the main site and the annex, but not between the devices from the different sites. For example, you cannot ping PC-A from the Annex-PC. If you run the show ip route command on one of the routers, you will notice that the routing table contains only the directly connected networks. You can configure static routers, but as the number of sites grows, the static routes will quickly become unmanageable. Our next step is to configure OSPF. 3.2. Configure OSPF In this section, you will configure OSPF on R1 and R2 using these parameters: · Configure OSPF using process id 100 (one hundred) · Use router ID: o R1: 1.1.1.1 o R2: 2.2.2.2 · Suppress routing OSPF updates on GigabitEthernet0/0 interface on both routers o There is no point in sending OSPF updates over the Gi0/0 interface since there are no other routers to process them. · Using the network command, add all directly connected networks to OSPF area 0 o The network address and the wildcard mask must match the network subnet exactly. 3.3. Verify connectivity By now, devices from both networks should be able to ping each other. Use ping, traceroute, and IOS commands to validate your connectivity; troubleshoot and correct any issues.