How To Configure a Domain Name On a Cisco Router?
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1. Log into the Cisco router and enter global configuration mode.
2. Issue the “ip domain-name” command with the desired domain name. For example, if you wanted to configure the domain name “example.com”, you would issue the command “ip domain-name example.com”.
3. Issue the “crypto key generate RSA” command in order to generate the necessary encryption keys for the domain name.
4. Issue the “ip name-server” command to specify the DNS servers for the domain name.
5. Issue the “ip domain-lookup” command in order to enable DNS resolution for the domain.
6. Issue the “ip host” command to map the domain name to the appropriate IP address.
7. Save the configuration changes to the running configuration.