Application Scenarios for DNS

If you want to use domain names to visit other devices, configure DNS. DNS entries record the mappings between domain names and IP addresses. In Figure 1, client programs and the DNS client are on the same device.

• If you seldom use domain names to visit other devices or no DNS server is available, configure static DNS on the DNS client. To configure static DNS, you must know the mapping between domain names and IP addresses. If a mapping changes, manually modify the DNS entry on the DNS client.
• If you want to use domain names to visit many devices and DNS servers are available, configure dynamic DNS. Dynamic DNS requires DNS servers.