Now that you have used the Cisco recommended way to determine that the problem lies in the network, it is time to look at the addressing. In this exercise, you need to look at the IP address, subnet mask and default gateway configured (as shown in Figure 2-6) to see if they are correctly configured. You can simply look at the subnet mask and see which are valid host addresses in that subnet to see if valid IP addresses have been configured. Take a step-by-step approach as shown below to narrow down the problem area: