|  | 10.3 | Verifying Address Configuration
| 10.3.1 | Verification commands

Addressing problems are the most common problems that occur on IP networks. It is important to verify your address configuration before continuing with further configuration steps. Three commands allow you to verify address configuration in your internetwork: telnet -- verifies the application layer software between source and destination stations; is the most complete testing mechanism available ping -- uses the ICMP protocol to verify the hardware connection and the logical address at the internet layer; is a very basic testing mechanism trace -- uses TTL values to generate messages from each router used along the path; is very powerful in its ability to locate failures in the path from the source to the destination