| 4.2 |  | Getting Information about Remote Devices |
| 4.2.6 |  | Troubleshooting IP addressing issues |

| Addressing problems are the most common problems that occur on IP networks. The following three commands are used to perform address-related troubleshooting: ping uses the ICMP protocol to verify the hardware connection and the IP address of the network layer. This is a basic testing mechanism. telnet verifies the application layer software between source and destination. This is the most complete test mechanism available. traceroute allows the location of failures in the path from the source to the destination. Trace uses Time to Live values to generate messages from each router along the path.
| Lab Activity Lab Exercise: Troubleshooting IP Address Issues In this lab, the students will configure two routers and two workstations in a small WAN.