Build a Routed Network

In this lab we used routers, switches and PC's to build a WAN.

On one side we had several PC's connected to a switch and on the other side the remaining PC's in the room were connected to the other switch. Both switches were connected to a bank of three routers to simulate a WAN (Wide Area Network). In order to build this network we will need four subnets. One between the switch and router on one side, then one between each router and then one between the last router and the other switch.

The IP address we were given was 140.20.0.0 and we were to configure four subnets. In order to create four subnets we would have to borrow 3 bits. This will make our subnet mask 255.255.224.0

The first subnet address is 140.20.0.0. The host range is 140.20.0.1 – 140.20.31.254 and the broadcast address is 140.20.31.255.

The second subnet address is 140.20.32.0. The host range is 140.20.32.1 – 140.20.63.254. The broadcast address is 140.20.63.255.

The third subnet address is 140.20.64.0. The host range is 140.20.64.1 – 140.20.95.254. The broadcast address is 140.20.95.255.

The fourth subnet address is 140.20.96.0. The host range is 140.20.96.1 – 140.20.127.254. The broadcast address is 140.20.128.255.

The subnet address for the switch on the South side of the room is 140.20.0.0. The subnet address for the switch on the North side of the room is 140.20.96.0. 140.20.32.0 and 140.20.64.0 were assigned to go between the routers. We were assigned to a host position and had to determine our IP address and configure our computer to it. I was given the second host address for our side. Our network IP address was 140.20.0.0. My IP address was 140.20.0.2. After everything was set up we then tried to ping each other. We could only ping the machines on the same side at first. Brad configured the routers while we watched. He had to use a console cable to access the Cisco ISO. This connected the router to computer so Brad could use a keyboard and monitor to enter the settings for the network. At first we could not ping the other side but Brad went back in and did some troubleshooting and found out that one router wasn't using the same encapsulation. Brad reconfigured this and then the network was operational. We could ping back and forth from either side of the network.