Mapping hostnames to IP addresses
You can define static hostname-to-address mappings on your IOS device in order to provide name resolution. This is usually done in environments without a DNS server. The mappings are defined by using the global configuration command ip host HOSTNAME IP_ADDRESS, like in this example:
In the example above we’ve defined an IP address of 192.168.5.27 for the hostname HQ_SERVER. To display the hostname-to-address mappings, run the show hosts command:
To verify that the hostnames are being resolved, we will ping the other device using the hostname:
You can see that the other device has responded, which means that the name resolution was successful.